Common Bean Germplasm Diversity Study for Cold Tolerance in Ethiopia

Random Amplified Polymorphic DNA (RAPD) assay was initiated for molecular genetic analysis among 13 F3 rice lines and their parents. Four out of 15 decamer random primers were used to amplify genomic DNA and the primers yielded a total of 41 RAPD markers of which 37 were considered as polymorphic with a mean of 9.25 bands per primer. The percentage of polymorphic loci was 90.24. The highest percentage of polymorphic loci (14.63) and gene diversity (0.0714) was observed in 05-6 F3 line and the lowest polymorphic loci (0.00) and gene diversity (0.00) was found in 05-12 and 05-15 F3 lines. So, relatively high level of genetic variation was found in 05-6 F3 line and it was genetically more diverse compared to others. The average co-efficient of gene differentiation (GST) and gene flow (Nm) values across all the loci were 0.8689 and 0.0755, respectively. The UPGMA dendrogram based on the Neis genetic distance differentiated the rice genotypes into two main clusters: PNR-519, 05-19, 05-14, 05-12 and 05-17 grouped in cluster 1. On the other hand, Baradhan, 05-9, 05-13, 05-11, 05-5, 05-6, 05-1, 05-4, 05-15 and 05-25 were grouped in cluster 2. The highest genetic distance (0.586) was found between 05-4 and 05-17 F3 lines and they remain in different cluster.DOI: http://dx.doi.org/10.3329/pa.v20i1-2.16839 Progress. Agric. 20(1 & 2): 1 8, 2009

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Comparison of selection indices for screening maize (Zea maysL.) germplasm for cold tolerance

Cereal Research Communications ◽

10.1556/crc.33.2005.2-3.115 ◽

2005 ◽

Vol 33 (2-3) ◽

pp. 525-531 ◽

Cited By ~ 1

Author(s):

Gul Zaffar ◽

Asif Shikari ◽

M. Rather ◽

S. Guleria

Keyword(s):

Cold Tolerance ◽

Selection Indices

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Damage of cowpea mild mottle virus and incidence ofBemisia tabacibiotype B in transgenic common bean lines resistant to bean golden mosaic virus

10.1603/ice.2016.114983 ◽

2016 ◽

Author(s):

Eliane Dias Quintela

Keyword(s):

Common Bean ◽

Mosaic Virus ◽

Mottle Virus ◽

Bean Golden Mosaic Virus ◽

Transgenic Common Bean

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Performance Evaluation of Grain Yield and Yield Related Traits in Common bean Genotypes at Yabello and Abaya, Southern Ethiopia

Journal of Aridland Agriculture ◽

10.25081/jaa.2017.v3.3365 ◽

1970 ◽

Vol 3 ◽

pp. 28-34

Author(s):

Ejigu Ejara, Wassu Mohammed, Berhanu Amsalu ◽

Zinash Misgana, Mulatu Gabisa, Ganane Tasama

Keyword(s):

Grain Yield ◽

Common Bean ◽

Agronomic Traits ◽

Southern Ethiopia ◽

Design Data ◽

Nutrition Security ◽

Lattice Design ◽

Food And Nutrition ◽

Borana Zone ◽

Home Consumption

Common bean is among the major crops grown in southern Ethiopia including Borana zone where the majority of the farmers are Agro-pastoralist and produce the crop mainly for home consumption. The area has potential to the production of common bean for food and nutrition security as well as export commodity. However, scarcity of varieties that fit to the environment is one of the major constraints of production. Therefore, this experiment was conducted to evaluate 36 common bean genotypes including seven released varieties to evaluate performance of genotypes for yield and agronomic traits. The field experiment was conducted in 2015 at two locations (Abaya and Yabello) and genotypes were planted in triple lattice design. Data were collected on yield and important agronomic traits. Analysis of variance computed for individual locations and combined analysis over locations revealed significant variations among genotypes for all traits. Moreover, 16.67% of the genotypes had mean grain yield greater than the best performing released variety across locations and the genotypes showed a grain yield as high as 3.25 tons ha-1. Based on results of this study it is recommended to test the high yielding and early maturing genotypes at many locations to develop preferred varieties across many locations.

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