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: 419

JPBCS Articles

Mode of inheritance for resistance to FOC Race 1 and fruit quality traits in Sukali Ndizi cultivar of Banana

October 2021

Information on the genetic control of resistance to Fusarium oxysporum f.sp.cubense (FOC) race (1) and fruit quality traits in Sukali Ndizi cultivar of banana is key to its genetic improvement. The mode of resistance to Fusarium wilt in Sukali Ndizi was analyzed in 536 hybrids and 5 parental lines and quality attributes in 137 hybrids and two parental lines, grown in same environment. Fruit quality was assessed by...

Author(s): Henry Buregyeya,, Kashub S. Tumwesigye, Moses Matovu, Kephas Nowakunda, Priver Namanya, Wilberforce K. Tushemereirwe, Eldad Karamura and Patrick Rubaihayo  

Impact of climate change on armyworm infestation on maize in Nigeria: A review

September 2021

Maize (Zea mays) is an important food crop in Nigeria, and it is fast becoming the most widely cultivated crop. Several efforts have been made by the Nigeria Government to make the country self-sufficiency in maize production, but some biotic and abiotic factors are impeding this achievement. Among the biotic constraints militating against maize production in Nigeria, armyworm (Spodoptera frugiperda) is most devastating...

Author(s): Adunola M. P., Fayeun L. S. and Fadara A. B.

BLUP & AMMI model for stability analysis of wheat genotypes evaluated under irrigated timely sown trials in North Eastern Plains Zone of India

September 2021

Environments explained 49.4%, G×E interaction 28.1%, and genotypes only 5.6% of the total sum of squares due to treatments for the first year of studied period 2018-2019 and 2019-2020. More than 95% of variations had been accounted for by the first seven interaction principal components. Superiority indexes had identified WH1239, DBW187, HD3249 genotypes as per the BLUE estimates.  Same genotypes were...

Author(s): Verma Ajay and Gyanendra Singh

Exploiting combining ability in a diallel cross between native and elite cucumber (Cucumis sativus L.) varieties

September 2021

F1 progenies derived from a set of diallel crosses involving native and 5 elite cucumber varieties were evaluated in a randomized complete block design (RCBD) with three replications to study combining ability for some important agronomic traits. The analysis of variance revealed that the mean squares due to genotypes were significant for the traits studied, indicating wide diversity among the parents. Mean squares for...

Author(s): Manggoel W., M. I. Uguru, P. E. Ogbonna and M. A. Dasbak

Inheritance and detection of QTL in cowpea resistance to brown blotch disease

August 2021

Brown blotch disease caused by Colletotrichum capsici, is one of the most important disease affecting cowpea production in Burkna Faso. Every year the disease can cause yield losses as high as 42 to 100% on farmer’s fileds. This study aimed to understand the inheritance of its resistance in cowpea and also identify quantitative trait loci (QTL) associated with the resistance. Seedlings of parents and F1, F2 and...

Author(s): Ibié G. THIO, Jean Baptiste TIGNEGRE, Inoussa DRABO, Joseph T. B. BATIENO, Elisabeth P. ZIDA, Mahamadou SAWADOGO, Paco SEREME, Erik W. OHLSON and Michael P. TIMKO

Water use efficiency: Behavior of upland rice lines under water deficit

August 2021

Upland rice (Oryza sativa) is affected by several biotic and abiotic factors that limit the yield potential of cultivars. In relation to water deficiency, the development of drought tolerant and water efficient cultivars is a priority in breeding programs. With this study aimed to evaluate the agronomic behavior of upland rice lines subjected to different irrigations depths aiming for the selection of genotypes that are...

Author(s): Mendes Villela Gabriel, Rosário Neto Antônio, Barbosa Silva Botelho Flávia, Pereira de Lima Isabela, Pereira de Castro Adriano and Goulart Castro Douglas

Response of selected sorghum (sorghum bicolor (l.) moench) genotypes to striga hermonthica (del.) benth in western Kenya

August 2021

Sorghum is an important staple food crop in Kenya, but its yield is low due to many constraints which include diseases, drought, soil fertility, and pests, notably parasitic weed Striga hermonthica. Twenty elite sorghum genotypes and one resistant check were evaluated in three replications in a complete randomized design in Agar Gel (AG) experiment and randomized complete block design on selected Striga hotspot farms at...

Author(s): Dauglas Claoudious Ochiel, Mathews M. Dida, Evans Ouma, P. Ayiecho Olweny, Samuel Gudu

Agromorphological characterization of scarlet eggplant (Solanum aethiopicum L.) grown in the Republic of Benin

July 2021

The scarlet eggplant (Solanum aethiopicum L.) is an African traditional vegetable grown for its edibles leaves and fruits, which can contribute to food security in Republic of Benin. However, very little information is available on the genetic variability of this vegetable for varietal improvement purposes. Sixty accessions of scarlet eggplants collected throughout 52 villages in Benin republic were characterized using...

Author(s): Aguessy Scholastique, Idossou Roger, Loko Yêyinou Laura Estelle, Agre A. Paterne, Dassou Anicet, Dadonougbo Eric, Dansi Alexandre and Agbangla Clément

Inheritance studies of grain shape and aroma traits of rice genotypes in Uganda rice germplasm

July 2021

A study was conducted to determine the mode of inheritance for grain shape and aroma traits of lines in the Uganda rice germplasm. Five aromatic and four non-aromatic rice lines were crossed in screen house using North Carolina Design II at the National Crops Resources Research Institute, Uganda. The resulting F2 seeds and their parents were planted in the field using complete randomized block design in two...

Author(s): David Ocan, Richard Tusiime, Bill Williams Khizzah, Jimmy Lamo, Albert Chiteka and Patrick Rutimbanzigu Rubaihayo  

Phenotypic diversity study on chickpea (Cicer arietinum L.) genotypes managed under different soil fertility levels for Adzuki bean beetle (Callosobruchus chinensis L.) resistance in Ethiopia

June 2021

Chickpea is one of the main annual crops in Ethiopia both in terms of its total cultivated area of pulses and its role in direct human consumption. The major problem to increase pulse production is the loss of seed viability and seeds damage from insect infestation particularly Adzuki bean beetle. Research works conducted on diversity study on chickpea varieties grown under different soil fertility levels were scanty....

Author(s): Sisay Argaye, Gemechu Keneni and Wakuma Bayissa  

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  

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  

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  

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  

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  

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  

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  

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.  

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  

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  

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  

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  

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  

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  

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

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  

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