Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 409

JPBCS Articles

Reproduction mode and apospory expressivity of selected hybrids of Paspalum notatum Flügge

April 2021

Paspalum notatum Flüggé (bahiagrass) is the most important forage grass in the native grasslands of southern Brazil; the native germplasm is tetraploid and apomictic. Breeding to produce cultivars has been possible due to chromosome doubling of sexual diploid accessions, allowing hybridizations with apomictic genotypes, generating progenies with variability for agronomic traits and segregating for...

Author(s): Juliana Medianeira Machado, Karine Cristina Krycki, Roberto Luis Weiler, Carine Simioni and Miguel Dall´Agnol  

Canadian plant breeder opinions regarding changes to plant breeders’ rights

April 2021

In 1991, Canada became a member of the International Union for the Protection of New Plant Varieties (UPOV). To further incentivize plant breeding research and development, Canada updated its plant breeders’ rights framework in 2015 to become compliant with UPOV-91 (the latest Act of the Treaty). This article reports the results of a survey assessing the impacts of UPOV-91 on Canadian plant breeders, and their...

Author(s): Chelsea Sutherland, Diego Macall and Stuart Smyth  

Identification of best maize-legume based cropping systems under conservation agriculture practices for Central Rift Valley of Ethiopia

April 2021

Cereal crops especially maize production in Ethiopian Central Rift Valley is affected by biotic and abiotic production. This study was conducted for two seasons (2015-2016) and the best cropping system was identified using Randomized Complete Block Design with three replications. The experiment had six treatments (1) Continuous mono-cropping under conventional practice (CN), (2) continuous mono cropping under...

Author(s): Goshime Muluneh Mekasha, Walter Tamuka Mupangwa, Solomon Admassu Seyoum, Alemayehu Zemede Lemma, Haimanot Beruk Senbeta, Mesele Haile Onu and Mamud Aman Tello  

Morphological and microsatellite characterization of improved Lablab purpureus genotypes

April 2021

Lablab purpureus is a multipurpose legume mainly grown by subsistence farmers for pulse, forage and vegetable. Despite these diverse uses that can be combined successfully under various agronomic conditions, the bean has not been extensively exploited. Dolichos production in Kenya is constrained by low yielding varieties, pests, poor growing techniques and varieties with non-preferred taste and flavor. A study to...

Author(s): David Ngure, Miriam Kinyua and Oliver Kiplagat  

QTL mapping for resistance to Cercospora sojina in ‘Essex’ × ‘Forrest’ soybean (Glycine max L.) lines

February 2021

Frogeye leafspot (FLS), caused by Cercospora sojina, is observed as red-brown lesions on leaves that can coalesce and decrease the photosynthetic ability of soybeans. The average yield loss due to Frogeye Leaf Spot is estimated at approximately 40% in established fields, whereas 100% incidence was previously recorded. QoI inhibitor fungicides were considered an effective control method, but the pathogen quickly evolved...

Author(s): Kelsey R. McAllister, Yi-Chen Lee and Stella K. Kantartzi  

Effectiveness of pyramided genes in conferring resistance to anthracnose disease in common bean populations

January 2021

Anthracnose disease (Colletotrichum lindemuthianum (Sacc. et. Magn) Lams. Scrib.) is one of the most devastating diseases that constrain common bean production in Uganda. A cascading pedigree pyramiding scheme was used to develop common bean populations to evaluate the effectiveness of pyramided and single resistance genes (Co-42, Co-43, Co-5, and Co-9) on disease development. Detached leaf trifoliates of F4:6 genotypes...

Author(s): Kiryowa M., Nkalubo S. T., Mukankusi C., Male A, Gibson P., Tukamuhabwa P. and Rubaihayo P.  

Association and interrelationship of yield and agronomic characters in coffee (Coffea sp L)

November 2020

Coffee is an important commodity in the international market. However, little attention is given to it and its breeding research in Nigeria. This has resulted to low production and foreign earning. The information on relationship between yield and yield- related characters is an excellent and significant tool for breeding. The experiment was conducted on Cocoa Research Institute of Nigeria coffee germplasms. The...

Author(s): Abigail Funlayo Adepoju, Omotayo Olalekan Adenuga, Keji Emmanuel Dada, Chinyere Florence Odey, Samsudeen Tomiwa Balogun and Mohammed BabaNitsa  

Characters association and path coefficient analysis of orange fleshed sweetpotato [Ipomoea batatas (L.) Lam.] genotypes evaluated in Hawassa, Ethiopia

November 2020

The experiment was conducted to assess associations between root yield and yield- related traits of orange-fleshed sweetpotato genotypes to identify traits that have maximum effect on root yield of sweetpotato to make possible selection. Twenty-four Orange Fleshed Sweetpotato genotypes were evaluated in 2017 main cropping season at Hawassa Agricultural Research Center using a Randomized Complete Block Design (RCBD) with...

Author(s): Bililign Mekonnen, Andargachew Gedebo and Fekadu Gurmu  

Assessment of indigenous knowledge associated with Sorghum (Sorghum bicolor L. Moench) seed selection and the seed quality attributes in Fafen Zone of Somali Region, Ethiopia

October 2020

Understanding agro-pastoralist’s indigenous knowledge associated with sorghum seed selection, seed systems, and seed quality management will help to devise strategies for enhancing the food and feed security in crop-livestock mixed farming system. With this intention, indigenous knowledge practices of on-farm sorghum seed selection and evaluation of the seed quality were surveyed, which ultimately contributes to...

Author(s): Abraham Mulu Oljira and Mekennon Girma  

Multi-environment trial and spatial analysis for yield performance of sorghum [Sorghum bicolor (L.) Moench] hybrids in dry lowland sorghum growing areas of Ethiopia

October 2020

Sorghum is one of the most widely preferred and cultivated crops in Ethiopia. It is grown for food and feed components. In the developed world, exploitation of heterosis in most crops (Maize, Sorghum, Rice, etc.) is high. There is a clear need to develop sorghum hybrids in Ethiopia to improve their livelihood by increasing sorghum production and productivity. One of the strategies for increasing sorghum yield is through...

Author(s): Kidanemaryam Wagaw, Amare Seyoum, Amare Nega, Taye Tadesse, Daniel Nadew, Habte Nida, Alemu Tirfessa and Adane Gebreyohannes  

Participatory maize hybrid evaluation for different cropping systems in the central rift valley in Ethiopia

October 2020

This study was conducted at research and farmers’ field. Seven new promising and three standard checks in total ten hybrid varieties were planted and evaluated in 2013 main season. At research field, the genotypes were tested under sole and inter cropping in two replications and each genotype was planted in two rows using spacing 0.75 cm and 0.30 cm between consecutive maize rows and between plants, respectively....

Author(s): Goshime Muluneh Mekasha, Solomon Admassu Seyoum and Alemayehu Zemede Lemma  

Genetic diversity of Ethiopian durum wheat (Triticum durum Desf) landrace collections as reveled by morphological markers

October 2020

Knowledge of the extent and pattern of genetic diversity within and among populations is crucial to identify useful breeding materials and design appropriate collection and conservation strategies. Genetic diversity of 160 durum wheat (Triticum durum Desf) accessions was studied using 15 morpho-agronomic traits. The field studies for morphological characterization were undertaken at Adadi Maryam and Ginchi locations...

Author(s): Meseret Asmamaw Wondifaw, Gemechu Keneni and Kassahun Tesfaye

Evaluation of the performance of advanced generation soybean [Glycine max (L.) Merr.] genotypes using GGE biplot

September 2020

Soybean is an important food and cash crop in Uganda. Despite the importance of soybean in Uganda’s economy, its performance is highly affected by genotype × environment interaction making it difficult to select and recommend new superior soybean genotypes for diverse growing environments. The objectives of this study were to examine the nature of G × E interaction for soybean grain yield, to identify...

Author(s): Clever Mukuze, Phinehas Tukamuhabwa, Mcebisi Maphosa, Shorai Dari, Tonny Obua, Hellen Kongai and Patrick Rubaihayo  

Performance and adaptability of common bean genotypes at different agro-ecological environments in Kagera region

September 2020

Sixteen common beans (Phaseolus vulgaris L.) genotypes were used to study the genotype by environment interaction and grain yield stability. The randomized complete block design was used with three replicates. Data on yield were analyzed using additive main effects and multiplicative interaction (AMMI) model, genotype plus genotype by environment interaction (GGE) biplot model was used to display graphical...

Author(s): Julius P. Mbiu, Susan Nchimbi–Msolla, Magdalena N. William and Jean C. Rubyogo  

Evaluating the pollen proofing of nonwoven synthetic fabric pollination control tents for sugar beet

August 2020

Three pollination control tents (PCTs) made from novel nonwoven synthetic fabrics with more open pore structure (DWB10, DWB23 and DWB24) were compared with the standard DWB01 fabric for pollen proofing in sugar beet (Beta vulgaris L.) at the research station of Lion Seed Ltd Essex, UK in 2019. PCTs of 63.5 x 63.5 cm footprint accommodated single potted plants. A completely randomised trial with five replications...

Author(s): Paul Townson, Daljit Singh Virk and Hannah Senior  

Performance evaluation and selection of new maize hybrids under sole and inter crop production systems

August 2020

Screening of maize genotypes under different cropping systems (sole and inter cropping) is very important to understand the genotypes response for different abiotic and a biotic stress. Nine maize genotypes including the standard check (BH-543) were planted and evaluated at research and farmers’ fields in the 2011 and 2012 cropping seasons. Farmers were invited to evaluate the genotypes based on their criteria of...

Author(s): Goshime Muluneh Mekasha, Solomon Admassu Seyoum and Alemayehu Zemede Lemma  

Assessing the effectiveness of nonwoven fabric pollination tents for improved grass breeding

August 2020

The practices of using isolation and distance in the seed production of open pollinated crops are fundamental concepts to ensure seed purity. We uniquely examined the effectiveness of replacing isolation plots for seed production and grass breeding with different sizes of novel nonwoven synthetic fabric pollination control tents (PCTs). Two fabrics, DWB10 and DWB24, were used along with multiple genotypes of tall fescue...

Author(s): Michael Trammell, Dusty G. Pittman, Daljit Singh Virk and Hannah Senior  

Sorghum mutation breeding for tolerance to water deficit under climate change

July 2020

This study aimed at creating genetic variability by induced mutagenesis in farmers’ preferred sorghum variety (ICSV1049) to breed mutant lines for water deficit tolerance. Sorghum seeds were irradiated by gamma rays and sown as one panicle-to-one progeny method. Putative lines M5 (143) and parent were screened under water deficit stress. Data analysis showed that leaf senescence (LS) was positively correlated to...

Author(s): Minimassom P. Nikièma, Nofou Ouédraogo, Hamidou Traoré, Mahamadou Sawadogo, Ljupcho Jankuloski, Mukhtar Ali Ghanim Abdelbagi and Djibril Yonli  

Genetic progress for tuber yield and related traits of potato (Solanum tuberosum L.) in Ethiopia

July 2020

Little work has been done to evaluate the progress made in potato improvement in Ethiopia during the past three decades and information about traits most contributing to progress in yield is scarce. Hence, this experiment was conducted to estimate rate of genetic improvement made over time in yield and to determine traits most contributing to progress in tuber yield. Twenty varieties of potato released in Ethiopia...

Author(s): Tessema Lemma Gebrehanna, Wassu Mohammed Ali and Tesfaye Abebe Desta  

Inheritance pattern of resistance to Fusarium wilt (Fusarium oxysporum f. sp sesame) in sesame

June 2020

Fusarium wilts (Fusarium oxysporum f.sp. sesame) is among of the most destructive soil-borne disease of sesame in Uganda. The disease may cause yield loss of up to 100% if not controlled. Breeding and use of resistant varieties is the most economic and eco-friendly solution to the disease since majority of sesame growers are resource constrained. Some genotypes were reported to be moderately resistant to the disease in...

Author(s): Z. S. Ngamba, G. Tusiime, P. Gibson, R. Edema, M. Biruma, P. A. L. Masawe, E. Kafiriti and F. Kapinga  

Evaluation of improved pigeon pea (Cajanus cajan) varieties for organoleptic dal quality in India

June 2020

Pigeon pea (Cajanus cajan L.) is an important pulse crop in the Indian diet and one of the most important sources of dietary protein for the population.  Organoleptic qualities of pigeon pea dal were tested to draw conclusions on the preferred varieties. Organoleptic qualities such as taste, texture, aroma, tenderness, sweetness and overall acceptance were tested by a trained sensory panel. Available and...

Author(s): Fromm I., Bollinedi H., Dheer M., Goel P., Nehra P. , Raje R. S. , Singh G., Singh N. K., Jha S. K. and Singh A.  

Genetic variation among white lupin (Lupinus albus L.) landraces from Northwestern and Southern Ethiopia for agronomic traits and nutrient contents of grain

June 2020

White lupin (Lupinus albus L.) is rich in quality protein, relatively tolerant to drought, soil salinity and acidity, increase the fertility of soils and can contribute to improved agricultural sustainability, food security and reduce malnutrition which has close associations with climate change. This study was conducted to assess genetic variability of white lupin genotypes for agronomic traits and nutrient contents of...

Author(s): Chaltu Beyene  

Selection of drought tolerant genotypes in groundnut (Arachis hypogaea L.) using indices

June 2020

A study was carried out to evaluate the effect of drought stress on pod yield and other traits of groundnut genotypes to select the ten best performing genotypes using indices. Ninety six genotypes including 90 F2:3 progenies, 4 parents and 2 checks were planted under well-watered (WW) and water-stressed (WS) conditions at the International Crops Research Institute for the Semi-Arid Tropics ICRISAT, Mali. Six selection...

Author(s): Ousmane Sanogo, Pangirayi B. Tongoona, Kwadwo Ofori and Haile Desmae  

Potential of ten wild diploid cotton species for the improvement of fiber fineness of upland cotton through interspecific hybridization

May 2020

Cotton is the highest source of natural fiber in textile industry worldwide. With the modern spinning technologies, the demand for cotton fiber with higher quality has increased, making the genetic improvement of fiber quality one of the main challenges for cotton breeders. In cotton breeding, wild species are important source of several desirable genes for genetic improvement of the main cultivated cotton Gossypium...

Author(s): N’Guessan Olivier KONAN, Jean Pierre BAUDOIN and Guy MERGEAI  

Allelic variability of oil palm inter-population progenies based on simple sequence repeats markers

May 2020

The genetic structure and variability was described among 52 oil palm inter-population crosses after two selection cycles using simple sequence repeats markers (SRR). The 10 sets of SSR markers covering 62.5% of the oil palm genome showed a high level of polymorphism (average number of alleles per locus = 6.7; unbiased expected heterozygosity = 0.655; G”st = 0.346) across the oil palm samples. On the basis of...

Author(s): Okoye Maxwell N.,, Uguru M. I., Bakoumé C. and Singh R.  

Establishment of an early selection method (criteria) for breeding in cowpea (Vigna unguiculata)

May 2020

Populations with high genetic variability are targeted by breeders as they create opportunity for selection and genetic improvement. To achieve this, multiple populations are created, but resources are often scarce. This calls for identification of populations with the desired traits at early generation. The study was carried out at MUARIK in seasons 2017A and 2017B on 135 F2 and 40 F3 cowpea populations respectively...

Author(s): Avosa Oside Millicent, Orawu Martin, Ongom Obia Patrick, Dramadri Onziga Isaac, Rutayisire Amandin, Osundwa Cynthia, Paul Gibson and Edema Richard  

Harnessing genotype-by-environment interaction to determine adaptability of advanced cowpea lines to multiple environments in Uganda

May 2020

This study was conducted to determine the yield stability of advanced cowpea lines in diverse agro-ecological zones of Uganda in order to facilitate documentation requirements for national performance trials (NPT). Thirty cowpea genotypes were evaluated against six checks in three localities, over three growing seasons, making a total of 9 unique environments. The trials were laid in a 6x6 alpha lattice design with...

Author(s): Francis Abiriga, Patrick O. Ongom, Patrick R. Rubaihayo, Richard Edema, Paul T. Gibson, Isaac Dramadri and Martin Orawu  

Evaluating natural infection of fungal, bacterial and viral pathogens to dry bean genotypes under field conditions

March 2020

Fungal, bacterial and viral diseases are economic foliar diseases that cause yield losses, between 40 and 100%, in commonly grown dry bean cultivars in the world. Development of disease resistance genotypes is a complex interaction between genetic and environmental factors. This study focused on determining the natural infection of disease-causing pathogens of angular leaf spot, powdery mildew, bacterial blight and bean...

Author(s): Papias H. Binagwa, Guohao He, Marceline Egnin, Gregory C.  Bernard, Desmond Mortley and Conrad K. Bonsi  

Variability, Association and Path Coefficient Analysis of Green Pod Yield and Yield Components of Hot pepper (Capsicum annuum L.) Landraces at Mereb Lehke, Northern Ethiopia

March 2020

Understanding the genetic variability and diversity of crops is the basis for breeding and improving of crops. Sixty four Ethiopian hot pepper genotypes were evaluated in 8×8 simple lattice design for genetic variability in green fruit yield and yield related traits at Axum Agricultural Research Center during 2018/2019 under irrigation. Data were collected on green pod yield and yield related characters. The...

Author(s): Fasikaw Belay and Yemane Tsehaye  

Genetic variability, heritability and correlation of quantitative traits for Arabusta coffee (C. arabica L. X Tetraploid C. canephora Pierre)

March 2020

The biennial bearing and the long productive nature of coffee makes it difficult to release coffee variety within a short time span. This study aimed at evaluating the yield performance of the Arabusta hybrids and its backcrosses developed by Coffee Research Institute of the Kenya Agricultural and Livestock Research Organization (KALRO-CRI) using the morphological traits. Nineteen coffee genotypes were evaluated at...

Author(s): Jane Jerono Cheserek, Kahiu Ngugi, James Wanjohi Muthomi and Chrispine Ogutu Omondi  

Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

February 2020

Pigeonpea (Cajanus cajan L. Millspaugh) is a neglected and under-utilized crop consumed in several regions of word. In order to assess performance of pigeonpea landraces grown in Benin for useful breeding programs, 50 accessions were collected from 39 villages. These accessions were characterized by using 12 qualitative and 11 quantitative traits. Based on the seeds morphological characteristics, the 50 accessions were...

Author(s): Géofroy Kinhoégbè, Gustave Djèdatin, Laura Estelle Yêyinou Loko, Relique Ignace Agbo, Rachit Kumar Saxena, Rajeev Kumar Varshney, Clément Agbangla and Alexandre Dansi  

Effect of low temperature stress on field performance of highland sorghum (Sorghum bicolor (L.) Moench) at flowering stages

February 2020

Sorghum is a C4 grass native in the semi-arid environments of the African sub-Saharan and consequently chilling stress can affect the performance of the crop, especially at the reproductive stages. Moreover, a significant delay of flowering and maturity was observed when sorghum grows under low temperatures regions, and consequently farmers in highland areas of Uganda face yield penalties. Forty genotypes were evaluated...

Author(s): Amandin Rutayisire, Alice Mukayiranga, Jean Claude Habineza, Millicent Avosa, Richard Edema and Geofrey Lubadde  

Fusarium oxysporum Race 1 resistance and quality traits variations in apple banana germplasm

February 2020

Musa species, AAB genome group, commonly known as Sukali Ndizi (SND) in Uganda, has attained a substantial commercial value in the recent past owing to its superior fruit quality attributes and better prices. However, its sustainable production and productivity are highly threatened by Fusarium wilt. To facilitate large scale area expansion of this important dessert banana, the present study was carried out to identify...

Author(s): Henry Buregyeya,, Robooni Tumuhimbise, Moses Matovu, Kashub S. Tumwesigye, Jerome Kubiriba, Kephas Nowankunda, Wilberforce K. Tushemereirwe,  Deborah Karamura, Eldad Karamura, Robert M. Kityo and Patrick Rubaihayo  

Genotype by environment interaction and yield stability analysis of open pollinated maize varieties using AMMI model in Afar Regional State, Ethiopia

February 2020

The present study attempts to analyze the magnitude of GxE interaction and evaluates the adaptability and stability of open pollinated maize genotypes for grain yield, using AMMI (Additive Main Effects and Multiplicative Interaction) model. The field experiment was conducted for two consecutive years during the off seasons of 2016/17 and 2017/18 at three locations namely, Awra, Dalifage and Dubti. The experiment in each...

Author(s): Mohammed Abate  

Identification of single nucleotide polymorphism (SNP) markers closely linked with powdery mildew resistance gene Pm5e in wheat

February 2020

Wheat (Triticum aestivum L.) is one of the most important food crops worldwide. Powdery mildew (Pm), caused by Blumeria graminis f. sp. tritici is a severe disease in wheat production. Gene Pm5e, from a Chinese wheat cultivar Fuzhuang 30 has proven to be a valuable resistance source for Pm in breeding. To further map this gene and develop Kompetitive allele-specific PCR (KASP) assays for marker-assisted selection (MAS),...

Author(s): Xiufang Yuan, Honggang Wang and Shubing Liu  

Evaluation of hot pepper (Capsicum annuum L.) varieties for green pod yield and yield components in Western Tigray, Northern Ethiopia

December 2019

A field experiment was conducted at Humera Agricultural Research Center experimental site for two consecutive years (2011/2012 and 2012/2013 cropping season) under irrigation condition to evaluate performance of hot pepper varieties for green pod yield and yield components in western Tigray, Northern Ethiopia. A total of six hot pepper varieties were used as test genotypes. Least Significant Difference (LSD) and Pearson...

Author(s): Shushay Chernet and Haile Zibelo  

Evidences that polyploidization and hybridization affected resveratrol content in Arachis interspecific hybrids

December 2019

To broaden the genetic base of the allotetraploid peanut (Arachis hypogaea L.), pre-breeding programs have produced interspecific synthetic allotetraploids resulting from the chromosome duplication of hybrids between peanut related diploid species. These allotetraploids were highly cross-fertile with peanut making it possible to access the extensive genetic variability harbored by the wild species. This study aims to...

Author(s): Paula Vasconcelos Carvalho, Márcio de Carvalho Moretzsohn, Ana Cristina Miranda Brasileiro, Patrícia Messenberg Guimarães, Tânia da Silveira Agostini Costa, Joseane Padilha da Silva, and Marcos A. Gimenes  

Efficacy of insecticides and crop critical stage for the management of chickpea pod borer (Helicoverpa armigera) in Central Zone of Tigray, Ethiopia

November 2019

Chickpea pod borer (Helicoverpa armigera) is a major insect pest constraining chickpea production in Tigray, northern Ethiopia, as there is no recommended management option in the area. Therefore the present study was conducted to assess the efficacy of insecticides and to determine the critical growth stage of the crop for effective spray at Axum Agricultural Research Center. Results indicated that in laboratory profit...

Author(s): Zereabruk Gebretsadkan, Weldu Nahom and Wolday Kiros  

Heritability studies of drought tolerance in groundnuts using the North Carolina design II fashion and variance component method

November 2019

Drought is the most important abiotic limitation to groundnut yields across the world, and the Northern Regions of Ghana. The study estimated the heritability and genetic variability of selected parents of groundnut for drought tolerance traits to aid in their effective selection and utilization. The North Carolina II mating design was adopted while the variance component method was used to estimate heritabilities in...

Author(s): Oppong-Sekyere D., Akromah, R., Ozias-Akins P., Laary, J. K. and Gimode D.  

Evaluation of coffee berry disease resistance (Colletotrichum kahawae) in F2 populations derived from Arabica coffee varieties Rume Sudan and SL 28

November 2019

Coffee supports livelihoods of approximately 125 million families worldwide and over 700,000 households in Kenya. The epidemics of Coffee berry disease (CBD), caused by Colletotrichum kahawae, destroy up to 80% of the developing berries on susceptible varieties. The control of the disease using chemicals accounts for 30 to 40% of the production cost and contributes to environment pollution, hence the use of resistant...

Author(s): James M. Gimase, Wilson M. Thagana, Chripine O. Omondi and John M. Ithiru  

Genetic dissimilarity and growth of coffee in Cerrado

November 2019

Genetic dissimilarity can be used to identify promising genotypes for cultivation in specific conditions. Thus, the objective of this work is to study the genetic dissimilarity among 35 genotypes of Coffea arabica in the Cerrado, under irrigation, using phenological data and multivariate statistics. Plant height, stem diameter, canopy diameter, number of orthotropic branch nodes, length of orthotropic branch internodes,...

Author(s): Cleiton Mateus Sousa, Welington Pereira, Marcos Gonçalves da Silveira, Mariella Camargo Rocha and Vinicius Gonçalves Almeida  

Estimates of genetic parameters and genotype by environment interactions for sugar yield and its components in sugarcane genotypes in Western Kenya

November 2019

This study was conducted to estimate broad sense heritability, genetic advance, GE interactions and correlations among quality traits in sugarcane clones in western Kenya. Thirteen sugarcane promising clones and one check cultivar were evaluated plant and ratoon crops in three locations under rain fed conditions using the randomised complete block design with three replications.  Analysis of variance showed...

Author(s): Japheth Embeywa Jamoza, James Owuoche and Oliver Kiplagat

Germplasm collection and morphological characterization of local accessions of tigernut (Cyperus esculentus L.) in Ghana for conservation and utilization

September 2019

Tigernut (Cyperus esculentus L.) is a nutritious crop of the sedge family.  In Ghana available local accessions have not been collected and characterized for conservation and utilization purposes. The objective of this study was to collect, conserve and characterize twenty-four local accessions of tigernut in Ghana based on agro-morphological traits. The ANOVA revealed significant (p<0.05) differences among the...

Author(s): Esther Donkor, Daniel Nyadanu and Harrison Dapaah  

Resistance of cowpea to Cowpea bruchid (Callosobruchus maculatus Fab.): Knowledge level on the genetic advances

September 2019

Cowpea [Vigna unguiculata (L.) Walp.] is an important food legume. This crop considered as source of dietary protein is also used as a leafy vegetable in many African countries. Its usage as food and animal fodder is focused on food security and diminishing malnutrition particularly in marginal areas. Bruchid (Callosobruchus maculatus) is the most damaging, cosmopolitan pest of stored cowpea grains especially in the...

Author(s): D. Kpoviessi, S. Agbahoungba, Eric E. Agoyi, D. C. Chougourou and A. E. Assogbadjo

Identification of rice genotypes tolerant to submergence at seedling stage in Uganda

August 2019

Floods have destroyed over 2000 acres of rice in Uganda which affected yield and caused losses to farmers. This problem is more pronounced when fields are not well leveled, and the mode of irrigation is by surface flooding. Majority of lowland rice fields in East African region are of this nature and are thus prone to yield losses. There are no submergence tolerance varieties identified in Uganda, so far. To address...

Author(s): Anna Bildadi Mlaki, Paul Gibson, Richard Edema, Jean Claude Habineza, Gerald Mwanje, Jimmy Lamo and Ephraim Nuwamanya  

Diallel analysis of scald and net blotch resistance in barley (Hordeum vulgare L.)

July 2019

Scald and net blotch are major foliar diseases of barley causing high yield losses worldwide including Ethiopia. Development of varieties with double resistance is an effective approach of managing both diseases. However, the genetic background of the barley parents was not studied for future resistance breeding. Thus, the objective of the study was to assess genotype performances against scald and net blotch,...

Author(s): Zerihun Jalata, Firew Mekbib, Berhane Lakew and Seid Ahmed  

Genetic relationships among regenerated tall coconut (Cocos nucifera L.) accessions from multivariate analyses using reliable short list of morphological descriptors in Côte d’Ivoire.

May 2019

Genetic relationships among 18 regenerated tall coconut accessions from International Coconut Genebank for Africa and Indian Ocean (ICG-AIO) located at Côte d’Ivoire were studied. Analyses were achieved from 17 quantitative characters of the reliable minimal list of agro-morphological descriptors for coconut proposed by Coconut Genetic Resources Network (COGENT) in 2007. From achieved Multivariate Analyses...

Author(s): Yao Saraka Didier Martial, Diarrassouba Nafan, Dago Dougba Noël, Koffi Eric Blanchard Zadjehi, Fofana Inza Jesus, Konan K. Jean-Noel, Konan Konan Jean Louis, Bourdeix Roland, Sie Raoul Syvère and Zoro Bi I. Arsène  

Evaluation of genetic variability, heritability, genetic advance and correlation for agronomic and yield components in common bean landraces from South western Kenya

May 2019

The present study was conducted to estimate the genetic variability, heritability, genetic advance and association among selected agronomic traits of common bean landraces from South western Kenya. The field experiment was conducted using 52 common bean landraces at the Kenya Agricultural and Livestock Research Organization (KALRO), Kisii Research Center during 2015 and 2016 main cropping seasons. The experimental...

Author(s): Henry N. Anunda, Evans N. Nyaboga and Nelson O. Amugune  

Field performance of shrunken-2 super-sweet corn populations derived from tropical field maize × shrunken-2 super-sweet corn crosses in Ibadan, Nigeria

May 2019

The conversion of tropical field corn genotypes into sweet corn could broaden the genetic base and improve yield and adaptation of sweet corn varieties. In this study, the performance of shrunken-2 (sh2) super-sweet corn populations derived from crosses between a sh2 population and tropical field corn genotypes were evaluated in Ibadan. Experiments were conducted using randomised complete block design with three...

Author(s): Ayodeji Abe, Oladayo Abosede Lasisi and Olabisi Josephine Akinrinbola,  

Microsatellites revealed genetic diversity and population structure in Colombian avocado (Persea americana Mill.) germplasm collection and its natural populations

April 2019

Avocado (Persea americana Mill.) is one of the most consumed fruits around the world. The species is differentiated into three botanical races: Mexican, Guatemalan and West Indian. A genetic characterization of a Colombian avocado germplasm collection (N = 105) preserved since 2006 and 92 avocado “criollo” trees sampled in Antioquia was made with 12 microsatellites. Colombian avocado exhibits higher genetic...

Author(s): Gloria Patricia Cañas-Gutiérrez, Rafael Eduardo Arango-Isaza and Clara Inés Saldamando-Benjumea  

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