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: 363

JPBCS Articles

May 2019

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

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  

May 2019

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

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  

May 2019

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

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,  

April 2019

Genetic variability, heritability and genetic advance in shrunken-2 super-sweet corn (Zea mays L. saccharata) populations

Inbred line development requires information on the nature and magnitude of genetic variability and transmissibility of desired trait in source populations. In this study, the level of genetic variability, heritability and genetic advance of thirteen agronomic and fresh yield traits among twelve shrunken-2 super-sweet corn populations were evaluated. Field experiments were conducted for two years in Ibadan, Nigeria...

Author(s): Ayodeji Abe and Comfort Adeola Adelegan  

April 2019

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

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  

April 2019

Integrated evaluation of potato varieties in the highlands of Girar Jarso Woreda, North Shewa, Ethiopia

In Ethiopia, farmers are cultivating potato under a wide range of environmental conditions. Despite its genetic potential, the productivity of potato is relatively low. Among the long list of production constraints, the absence of high yielding and disease resistant varieties in different corners of the country are the prominent ones. Its suitable edaphic and climatic conditions make the highlands of Girar Jarso Woreda...

Author(s): Amha Besufkad, Bekele Gemechu, and Abate Mekuriaw,  

April 2019

Genetic diversity analyses of rice germplasm using morphological traits

The study of genetic diversity of any germplasm helps to facilitate its use and management. This experiment was carried out to determine the genetic diversity among 87 rice accessions from six countries. Seventeen quantitative traits were recorded based on the internationally accepted standard evaluation system for rice from IRRI. Analysis of variance, principal component analysis (PCA) and correlation amongst...

Author(s): Ibrahim Soe, Alex Tamu, Maxwell D. Asante Daniel Nyadanu and Richard Akromah  

March 2019

Advances in carotenoid increments in storage parts of African staple crops

The importance of vitamin A and other carotenoids in controlling micronutrient based deficiencies in particular VAD has been emphasized in recent years. This has resulted into demands for availing these nutrients in forms that are easily accessible for most of the populations in micronutrient deficient areas. Specifically in Africa, various programs have been instituted to bio-fortify crops with nutrients with more...

Author(s): Ephraim Nuwamanya and Evans Atwijukire  

March 2019

Genetic Diversity Analysis of Ethiopian Elite Chickpea (Cicer arietinum L.) Varieties Based on Agronomic Characters

This research aim to assess morphological diversity of the elite chickpea (Cicer arietinum L.) varieties in Ethiopia. Nineteen elite varieties of chickpea in Ethiopia were used to analyze the means and components of variability (genetic, phenotypic and environmental), and interrelationships (genetic and phenotypic) for yield and various other yield components. Such nineteen varieties were planted by the technique of...

Author(s): Zerihun Jida and Shiferaw Alemu  

March 2019

Determination of optimum plant density of broadcasting, row planting and transplanting on yield and yield components of Tef [Eragrostis tef (Zucc.) Trotter] in Central Zone of Tigray, Ethiopia

The low national   tef productivity is mainly attributed by lack of improved agronomic practices.  The row planting and transplanting is one of the promising planting techniques proved to boost the yield of tef. The objective was to determine the optimum seed rate, row, broadcasting and plant population in intra and inter row spacing of transplanted tef. A field experiment was carried out at Laelay...

Author(s): Chekole Nigus, Haftamu Hailekiros and Kiros Wolday  

March 2019

Generation and evaluation of heterogeneous genotypes of tomato for small-scale farmers

Tomato is broadly distributed in tropical and subtropical America, where small farmers cultivate commercial and landraces or heirloom genotypes, which exchange genes within them when are planted in the same plot. In this context, three different genetic groups of tomato were evaluated for agromorphological and yield traits under greenhouse to assess the differences in function of the genotypic homogeneity and...

Author(s): José C. Carrillo-Rodríguez, José L. Chávez-Servia, Ricardo Lobato-Ortiz and Catarino Perales-Segovia  

February 2019

Resistance Mechanisms of Tomato (Solanum lycopersicum) to Root-Knot Nematodes (Meloidogyne species)

Root-knot nematodes (Meloidogyne species) are the most devastating and as such they cause significant yield loss in tomato production. They are widely distributed in major tomato producing areas especially in warm climatic conditions. Because of the environmental impact of the application of pesticides, the use of nematode resistant varieties is becoming the most effective alternative to control root-knot nematodes....

Author(s): Mengistu Wubie and Zebyder Temesgen  

February 2019

Genetic variability studies on bread wheat (Triticum aestivum L.) genotypes

Thirty bread wheat genotypes were tested to assess the genetic variability, among studied genotypes using alpha-lattice design at Tongo sub-center of Assosa Agricultural Research Center and Kulumsa Agricultural Research Center in 2015. Analysis of variance revealed that there were statistically significant differences among the genotypes for most of the traits at individual and across locations. From the combined...

Author(s): Alemu Dabi, Firew Mekbib and Tadesse Desalegn  

February 2019

Phenotype characterization and diversity assessment of mango (Mangifera indica L.) cultivars in Ethiopia

Little efforts have been made on mango genetic resource assessment in Ethiopia though it is one of the major fruit crops. This study was conducted to assess the diversity of 69 mango cultivars of different growing regions of the country based on 44 phenotypic descriptors. The results of both univariate and multivariate analysis of variance computed for quantitative data, and results from descriptive statistics for...

Author(s): Tewodros Bezu Neguse, Fredah K. Rimberia Wanzala, Wassu Mohammed Ali, Githiri Stephen Mwangi and Willis O. Owino  

January 2019

Development and screening of cowpea recombinant inbred lines for seedling drought tolerance

The use of multiple traits for drought study affirms the complexity of drought tolerance in cowpea. Despite the availability of several traits for drought tolerance evaluation, the rapid screening technique used by many scientists for seedling drought in wooden boxes is the simplest method for screening large populations. The objective of this study was to select drought tolerant cowpea recombinant lines developed from...

Author(s): Alidu M. S., Asante I. K., Tongoona P., Ofori K., Danquah A. and   Padi F. K.  

January 2019

Evaluation of the parental and hybrid lines- Heterosis and other genetic parameters among Capsicum annuum genotypes and their hybrids

In most parts of the world pepper has become a popular spice that makes food hot in addition to its much needed nutrients of carotenoids and vitamins. This report has its objective to evaluate the parents and hybrid of three Nigerian pepper genotypes (Shombo, Tatase and Nsukka yellow pepper) for growth and yield; and to estimate their genetic parameters. Conventional breeding by hand pollination was adopted. The mean...

Author(s): Abu Ngozi E., Udoh O. E. and Uguru M. I.  

January 2019

Genetic action and potence ratio of maize in an 8×8 diallel cross growing under saline condition

Twenty-eight hybrids of Zea mays L. produced in 2015-16 from 8×8 half diallel mating design were evaluated along with their parents in 2016-2017 under saline condition to find out genetic action and potency ratio of some agronomic and yield contributing traits. Genetic action and potency ratio were analyzed following Hayman’s diallel analyses and Smith’s formula, respectively. Genetic parameter like...

Author(s): M.M. Rohman, S. H. Omy, S. Begum, M. A. Rahman, M. G. Hossain, M. M. Hoque and M. Amiruzzaman

January 2019

Anther-derived callus induction based on culture medium, myo-inositol, AgNO3 and Fe-EDTA in ‘Seolhyang’ strawberries

Haploid breeding is an effective method of shortening the breeding period of plants. In this study, to develop a haploid breeding technique, optimum conditions of the culture medium were investigated for anther-derived callus induction in the strawberry cultivar Seolhyang. The effects of the culture medium type, myo-inositol, auxin and cytokinin combination treatment, silver nitrate (AgNO3), and ferric...

Author(s): Haeyoung Na, Bong Seong Kim and Jungbeom Kim  

December 2018

GGE biplot phenotypic stability analysis of soybean [Glycine max (L.) Merril] genotypes

The study on genotypes by environment interaction (GEI) and stability analysis was conducted to determine the G, E, and GEI variance magnitudes. The experiment was carried out at three locations in two consecutive years on 26 soybean genotypes using randomized complete block design (RCBD) design with three replications. The objectives were to (i) estimate the magnitudes of G, E, and GEI effects, (ii) stability analysis...

Author(s): Ermiyas Tefera  

December 2018

Influence of environment on soybean [Glycine max (L.) Merr.] resistance to groundnut leaf miner, Aproaerema modicella (Deventer) in Uganda

Groundnut leaf miner (GLM) [Aproaerema modicella (Deventer)] is a serious problem for soybean cultivation in Uganda causing yield losses of up to 100%. The use of soybean [Glycine max (L.) Merr.] cultivars resistant to GLM attack is an important strategy in the integrated pest management program. The aim of this study was to determine the environment × genotype interaction influence on the soybean resistance...

Author(s): Angele Pembele Ibanda, Jeninah Karungi, Geoffrey Maxwell Malinga, Georges Adjumati Tanzito, David Ocan, Arfang Badji, Natasha Mwila, Thomas Lapaka Odong, Phinehas Tukamuhabwa and Patrick  Rubaihayo  

December 2018

Curauá genetic diversity in germplasm banks and natural populations

Ananas comosus var. erectifolius (L. B. Sm.) Coppens & F. Leal, populary known as curauá, is a bromeliaceae, found in the Amazonian flora. It is of great commercial interest, mostly for the automobile industry. Despite the curauá’s potential, little has been done to conserve its germplasm. For this, it’s necessary to know its genetic variability. An efficient way of knowing it is to use...

Author(s): Osmar Alves Lameira, Marcos Aparecido Gimenes, Raphael Lobato Prado Neves, Maria do Socorro Padilha de Oliveira, Simone de Miranda Rodrigues, Luiz Fernandes Silva Dionisio and Maria Rosa Travassos da Rosa Costa  

November 2018

Morphological characterization of common bean (Phaseolus vulgaris L.) landraces of Central region of Benin Republic

Common bean (Phaseolus vulgaris L.) is an important food consumed in every region in Republic of Benin; however, it remains a neglected and under-utilized crop. In order to assess the value of bean germplasm of the central region in the Republic of Benin for useful breeding programs, 57 accessions were collected from 23 villages. After a classification based on the morphological variables of the seeds, these accessions...

Author(s): Laura Estelle Yêyinou Loko, Azize Orobiyi, Arlette Adjatin, Joel Akpo, Joelle Toffa, Gustave Djedatin and Alexandre Dansi  

November 2018

Characterization and correlation analysis of economically important parameters of lentil exotic germplasm

The basic aim of this study is to evaluate the exotic lentil germplasm (BIGMP LIEN-MH-18) received from ICARDA. Economically desirable characters were studied and correlated to select the genotypes for the targeted breeding programme. Thirty-six lentil exotic entries were studied. The exotic genotypes 36102 and 36108 yielded 665 and 625 kg/ha respectively similar to our local recommended check (Punjab Masoor-09) that...

Author(s): Muhammad Rafiq, Sadia Kaukab, Aqsa Tahir, Masood Qadir, Muhammad Sajjad Saeed, Busharat Hussain and Gulfam Riasat  

October 2018

Assessment of salt tolerance and variability within some rice germplasm using microsatelittes

Soil salinity is a major abiotic stress that affects rice production. It can reduce yield drastically and result in total crop failure. The objectives of this study are to determine the genetic diversity within thirty-six rice accessions and to identify genotypes that are tolerant to salinity. Thirty-six rice accessions including three check varieties were sown in experimental pots and their leaves harvested for DNA...

Author(s): Anyomi W. E., Ashalley R., Amoah N.K.A, Blay E.T. and Ofori K.  

October 2018

Evaluation of agronomic performance of beta-carotene rich (yellow fleshed) cassava varieties in Nigeria

Twenty-five yellow fleshed cassava varieties including three checks (two improved and one local) were evaluated in a randomized complete block design with four replications in three locations in Nigeria. Tuber yield, dry matter content, root size, fiber content, harvest index, sprouting and vigor of the varieties evaluated were all significant at 0.05 significant levels across the locations. Taste, color of unexpanded...

Author(s): Adetoro N. A., Ogunbayo S. A., and Akinwale M. O.  

October 2018

Genetic variability, heritability and genetic advance of maize (Zea mays L.) inbred lines for yield and yield related traits in southwestern Ethiopia

Understanding the genetic variability, heritability and genetic advance of traits in any plant population is an important pre-requisite for breeding program. The experiment was conducted to assess the magnitude of genetic variability, heritability and genetic advance of 24 maize inbred lines for 16 quantitative traits. The field experiment was conducted during 2016 cropping season at Jimma Agricultural Research Center...

Author(s): Tadesse Jilo, Leta Tulu, Techale Birhan and Lemi Beksisa  

October 2018

Correlation and path coefficient analysis of yield and quality components of garden cress (Lepidium sativum L.) genotypes in Ethiopia

The improvement for a trait of interest can be achieved by both direct and indirect selection of characters that are more heritable and easy to select. The aim of this study was to determine the degree and nature of associations among seed yield and seed quality related characters. One hundred eight garden cress (Lepidium sativum L.) genotypes were evaluated for their yield and seed quality related traits using a...

Author(s): Legesse Tadesse, Firew Mekbib, Adugna Wakjira and Zerihun Tadele  

October 2018

Genetic variability of some chickpea (Cicer arietinum L.) genotypes and correlation among yield and related traits in humid tropics of southern Ethiopia

The current investigation evaluated the genetic variability of some chickpea (Cicer arietinum L.) genotypes and correlation among yield and related traits in Abaya Woreda. Five improved chickpea genotypes along with one local variety were laid out in randomized complete block design with three replications. Data were recorded from phenological, growth parameters; and yield and related traits depicted the ranges of mean...

Author(s): Mieso Keweti Shengu, Dereje Hirpa and Zenabu Wolde  

September 2018

Stability for descriptors of Solanum aethiopicum Shum group (family Solanaceae)

Solanum aethiopicum Shum group is a nutrient-rich and income-generating crop enterprise in various sub-Saharan Africa countries. Despite its importance, the development of its improved varieties has not been prioritized. Until now, no field-based descriptor development reference for the crop is available for testing candidate varieties for distinctiveness, uniformity and stability. The purpose of this study is to...

Author(s): Nahamya Pamela Kabod, Godfrey Sseremba, Ruth Buteme, Michael Masanza, Elizabeth Balyejusa Kizito and Katwijukye Apolo Kasharu  

September 2018

Inheritance and combining ability of cowpea resistance to bruchid (Callosobruchus maculatus F.)

The bruchid, Callosobruchus maculatus (F.) is one of the most destructive pests and causes substantial losses to cowpea during storage in tropical and subtropical regions. The development of successful breeding strategy requires knowledge on gene action and trait inheritance in local and improved sources. In this study, the mode of inheritance, the types of gene action and maternal effects of cowpea resistance to...

Author(s): Weldekidan Belay Miesho, Ulemu Mercy Msiska, Hailay Mehari Gebremedhn, Geoffrey Maxwell Malinga, Patrick Obia Ongom, Patrick Rubaihayo and Samuel Kyamanywa  

September 2018

Inheritance and combing ability in maize using a 7x7 diallel cross

Twenty one F1s produced from 7x7 diallel mating along with the 7 parents were evaluated to notice the inheritance and combining ability of different traits to obtain high heterotic crosses. Genetic analysis and combing ability were analyzed following Hayman’s and Griffing’s diallel analyses, respectively. Hybrids projecting positive or negative potency ratio with >1.0 value for those traits is also the...

Author(s): S. Begum, S. S. Alam, S. H. Omy, M. Amiruzzaman and M. M. Rohman  

September 2018

Genotype by environment interaction and stability analysis of cowpea [Vigna unguiculata (L.) Walp] genotypes for yield in Ethiopia

Ethiopia is claimed to be a center of diversity for cowpea production. The crop is the most drought tolerant and could help the country overcome the recurrent drought problem; however, the yield is very low due to lack of effort to develop varieties. This research was conducted to evaluate the stability of cowpea genotypes and to estimate the magnitude of genotypes by environment interaction (GEI) effect on grain yield....

Author(s): Tariku Simion, Wassu Mohammed and Berhanu Amsalu  

September 2018

Evaluations of faba bean (Vicia faba L.) varieties for yield and yield related traits in central zone of Tigray, Northern Ethiopia

A field experiment was carried out at Laelay maichew and Tahtay maichew districts in central zone of Tigray, Northern Ethiopia, for two consecutive seasons (2014/2015 to 2015/2016) under rain fed conditions. The objective of the study was to evaluate and select best performing faba bean varieties. Ten faba bean varieties including the local check were evaluated in randomized complete block design (RCBD) in three...

Author(s): Kiros Wolday  

August 2018

Potential in a collection of adapted and exotic tropical maize inbred lines as resistance source for stem borers

Lepidopteran borers are the most devastating field pests of maize in West and Central Africa. In view of the rapidly changing climate which favours an upsurge of more destructive biotypes of insect pests, diverse sources of resistance from different genetic backgrounds need to be harnessed for crop improvement purposes. Forty tropical maize inbreds comprising adapted and exotic lines from International Institute of...

Author(s): Qudrah Olaitan Oloyede-Kamiyo, Sam Oyewole Ajala and Anthony Oluwatoyosi Job  

August 2018

Agro-morphological characterization of some taro (Colocasia esculenta (L.) Schott.) germplasms in Ghana

Taro (Colocasia esculenta (L) Schott.) is one of the underutilized crops in Ghana which has great potential in terms of food and nutritional value. Eighteen (18) accessions collected from Samoa (8), Malaysia (2), Indonesia (2) and Ghana (6) were studied under field conditions to collect data on their agro-morphological characteristics and yield potential for the development of the crop. The study was conducted at...

Author(s): R. Boampong, L. M. Aboagye, D. Nyadanu and M. Esilfie  

August 2018

Varietal screening for resistance against field and storage crop pests: An implication for Ethiopian crop variety development

Food security in developing countries like Ethiopia has been a challenge for many years due to pre and post-harvest losses of agricultural products which are caused by different biotic and abiotic factors.  Grain losses from pest infestation prior to harvest and during storage are a serious problem, particularly in developing countries like Ethiopia. More than 70% insect pests have been identified; they attack...

Author(s): Muez Berhe Gebremdein  

August 2018

Evaluation of constraints in production of root and tuber crops in Ethiopia: Overview of policy neglected climate resilient food security crops

The objective of the current study was to examine the major constraints in production of root and tuber crops in Ethiopia with emphasis on identifying the policy gaps. This appraisal was based on survey report of Central Statistical Agency (CSA) for the period of 2011 to 2015. Data of CSA report was chosen for the current study with the view to gain an overview of policy packages in root crops in contrast with other...

Author(s): Semeredin Yimer and Tsegaye  Babege  

July 2018

Genetic variability in a quality protein maize (QPM) population under double viral infections

The type of gene action conferring combined resistance to maize streak virus (MSV) and maize stripe virus (MStV) was investigated in a Quality Protein Maize (QPM) population, ART/98/SW6-OB. Full-sib and half-sib progenies generated using North Carolina Design I mating scheme were evaluated in 2015 and 2016 in two locations endemic to the viral diseases in Nigeria. Serological study was also conducted on the progenies to...

Author(s): Qudrah Olaitan Oloyede-Kamiyo, Kehinde Titilope Kareem and Amos Oluwaseun Ajagbe

July 2018

Incidence of seed borne fungi in farm saved rice seeds, quality declared seed and certified seed in Morogoro Region in Tanzania

Rice (Oryza sativa L.) is the second most important food crop after maize in Tanzania. It faces many challenges like diseases, pests and physical damages, which reduce the seed quality. This article identified microorganisms and the district where they occurred. 13 fungal species comprising of 11 pathogenic and 2 saprophytic fungi were detected and the incidence level varied among sample. Mvomero District showed the...

Author(s): A. D. Kwaloe, , D. G. Msuya, S. Nchimbi-Msolla, D. P. Tokpah and Z. Luther  

July 2018

Phenotypic and serological evaluation of cowpea (Vigna unguiculata L.Walp) genotypes for resistance to viral infection under field conditions

Viral infections are a major challenge to sustainable cowpea production in sub-Saharan Africa (SSA). Nine cowpea (Vigna unguiculata L. Walp) genotypes were evaluated for resistance against viral infection in a field trial involving randomized complete block design with 4 replications. Viral disease severity was assessed at 2, 4 and 6 weeks after planting (WAP) based on disease symptoms. Double antibody sandwich-enzyme...

Author(s): Elvis Asare-Bediako, Vera Essandoh A. and Aaron Asare T.

July 2018

On farm demonstration of improved lettuce variety (Lactuca Sativa) in Southeastern zone of Tigray, Ethiopia

Improved slow bolting lettuce variety is one of the important traits of lettuce for farmers in the study area to increase their production and income. Therefore a field experiment was conducted in Enderta district of South eastern zone of Tigray with the objective to evaluate and demonstrate the slow bolting lettuce variety, enhance the income of farmers by increasing production and productivity, and participate farmers...

Author(s): Luchia Tekle, Niguse Abebe and Mehari Asfaw

June 2018

Inheritance and combining ability study on drought tolerance and grain yield among early maturing inbred lines of maize (Zea mays L.)

Utilization of stress tolerant maize is key to sustainable production and food security. Limited knowledge on genetics of drought tolerance hampers development of drought tolerant varieties. The aim of this study was to study inheritance and combining ability of drought tolerance and grain yield among early inbred lines of maize. Five inbred lines were mated in full diallel in 2015 major season. The resultant 20...

Author(s): Issa Z. M. M., Nyadanu D., Richard A., Sangare A. R., Adejumobi I. I. and Ibrahim D.

June 2018

Development of two high-yielding, consumer-acceptable apple banana hybrids (Musa species, AAB genome group) with resistance to Fusarium oxysporum f. sp. cubense race 1

Fusarium wilt of bananas (Musa species) is caused by Fusarium oxysporum f. sp. cubense (Foc). Foc race 1 in particular affects dessert bananas in Uganda, causing >60% yield loss. This study was conducted to assess the performance of two new apple banana genotypes for bunch yield, resistance to Foc race 1 and consumer acceptability. The new apple banana genotypes (NAMU1 and NAMU2), along with two check cultivars, one...

Author(s): Henry Buregyeya,, Robooni Tumuhimbise, Jerome Kubiriba, David Talengera, Kephas Nowankunda, Geofrey Arinaitwe, Wilberforce K. Tushemereirwe, Deborah Karamura, Eldad Karamura and Patrick Rubaihayo

June 2018

Effect of heat stress on common bean under natural growing conditions in three locations in different climate zones in the state of São Paulo, Brazil

Common bean (Phaseolus vulgaris L.) originated in medium to high altitude regions and is sensitive to high temperatures. Climate changes from an increase in global temperatures are foreseen, and therefore better understanding of the mechanisms of heat tolerance is necessary. In this context, the aim of this study was to investigate the effects of heat stress on twelve common bean genotypes under natural growing...

Author(s): Daiana Alves da Silva, Raquel Luiza de Moura dos Reis, João Guilherme Ribeiro Gonçalves, Sérgio Augusto Morais Carbonell and Alisson Fernando Chiorato

June 2018

Genetic variation of tef [Eragrostis tef (Zucc.) Trotter] genotypes for reaction to tef shoot fly [Atherigona hyalinipennis Van Emden], at Maysiye, Northern Ethiopia

One of the major biotic stresses that limits tef yield is insect pests attack. Of these tef, shoot fly is sporadically important insect pest in various tef growing areas of Ethiopia. Evaluation of diversity of tef germplasm in Ethiopia for the reaction tef shoot fly might give a chance to get host plant resistance. The main objective of this study was to assess the genetic variation among tef genotypes for their...

Author(s): Chekole Nigus

May 2018

Combining ability assessment in Helianthus annuus L. through line × tester analysis for quantitative traits and quality parameters

The cross combinations of different lines and testers (L×T) for high yielding sunflower (Helianthus annuus) hybrids were evaluated. Plant materials were utilized by L×T mating design of 7 lines and 3 testers and their 21 hybrids were sown in the field during 2015 autumn season in RCBD design with 3 replications. Genetic variability, general combing ability (GCA) and specific combining ability (SCA) among...

Author(s): Muhammad Azeem ur Rahman Khalid, Dr Muhammad Ahsan Iqbal, Muhammad Zubair, Amanullah Zafar, Asad Butt, Sulman Abid, Yasir Shahzad, Muhammad Ajmal and Ali Adnan Liaqat

May 2018

Genetic variability and diversity studies in Durum wheat (Triticum turgidum L. var. durum) genotypes based on cluster analysis using agronomic and quality traits in Southern Ethiopia

Genetic diversity is worthwhile for durum wheat breeding and consequently results in production of more efficient varieties under different conditions. Cluster analysis based on Euclidean distances was carried out with 21 durum wheat genotypes to assess the genetic diversity for agronomic and quality traits. The Unweighted Pair Group Average using Arithmetic Mean as linkage rule was used for the analysis of the...

Author(s): Yonas Shimelis, Wassu Mohammed and Tesfaye Letta

May 2018

Post-harvest evaluation of selected inbred lines to maize weevil Sitophilus zeamais resistance

Maize weevil (Sitophilus zeamais Motschulsky) is a major maize (Zea mays L.) storage insect pest in the tropics which reduces the quantity and quality of maize hence facilitating establishment of aflatoxin and other mycotoxins. The objective of this study was to evaluate maize weevil resistance on selected inbred lines. Twenty eight inbred lines with 2 checks (MTPO701-reistant and Duma 41-susceptible) were used in this...

Author(s): Khakata S., Mbute F. N., Chemining’wa G. N., Mwimali M., Karanja J., Harvey J. and Mwololo J. K.

April 2018

Compatibility studies in Cola nitida genotypes

Cross and self-pollination compatibility studies were carried out using 10 Cola nitida genotypes from the Cocoa Research Institute of Nigeria, Ibadan. The few genotypes that were self-pollinated tended to show low pod production; whereas, crosses between the genotypes showed higher pod production. These data would suggest that multiple genotypes should be included in plantations to achieve higher levels of...

Author(s): Odutayo, O. I., Adeyemi, F. A., Adebola, P. O. and Sotimehim, O. I.

April 2018

Genotypes × Environment interaction analysis for Ethiopian mustard (Brassica carinata L.) genotypes using AMMI model

The genotype x environment interaction (GEI) has an influence on the selection and recommendation of genotypes. To this end, G x E interaction and grain yield stability study was conducted for 17 advanced Ethiopian mustard across three districts (Sinana, Adaba and Agarfa) in the highlands of Bale zone during 2014 and 2015 main cropping season. Randomized complete block design with four replications was used. The...

Author(s): Tadele Tadesse, Gashaw Sefera and Amanuel Tekalign

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