Strain of Rhizobium effects on growth and seed yield of cowpeas (Vigna unguiculata)

1982 ◽  
Vol 68 (2) ◽  
pp. 249-260 ◽  
Author(s):  
M. C. P. Neves ◽  
R. J. Summerfield ◽  
F. R. Minchin ◽  
P. Hadley ◽  
E. H. Roberts
Keyword(s):  
Seed Yield ◽  
Vigna Unguiculata

scholarly journals Genetic Architecture for Seed Yield and it’s Contributing Traits in Cowpea (Vigna unguiculata L. Walp)

2019 ◽  
Vol 8 (09) ◽  
pp. 1850-1857
Author(s):  
P. B. Wadikar ◽  
M. R. Magar ◽  
S. J. Sonawane ◽  
S. L. Dhare
Keyword(s):  
Seed Yield ◽  
Vigna Unguiculata ◽  
Genetic Architecture

Assessment of genetic variability and inter-character association in the germplasm of cowpea (Vigna Unguiculata L. Walp) in hot arid climate

2018 ◽  
Author(s):  
Om Vir Singh ◽  
Neelam Shekhawat ◽  
Kartar Singh ◽  
R. Gowthami
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Vigna Unguiculata ◽  
Seed Weight ◽  
Number Of Clusters ◽  
Positive Direct ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Branches

Studies on genetic variability, correlation and path coefficient analysis were carried out with 38 accessions of cowpea (Vigna unguiculata L. Walp.) evaluated in two environments i. e. kharif 2013 (E1) and kharif 2014 (E2) at Research field of NBPGR, Regional Station Jodhpur, India. Analysis of variance revealed significant differences among the genotypes for all the traits. Genotypic coefficient of variation was highest for number of clusters per plant followed by number of pods per plant in both the environments. High broad sense heritability along with high genetic advance for seed yield per plant, 100 seed weight, pod length, number of pods per plant, peduncle length, number of clusters per plant, number of branches per plant and plant height indicated the presence of additive gene effects for these traits in cowpea. In both the environments seed yield per plant was positively correlated with 100 seed weight, pod length, number of pods per plant, number of clusters per plant, number of branches per plant and plant height. The highest positive direct effect registered by number of branches per plant followed by number of clusters per plant in E1 environment and by number of branches per plant followed by plant height in E2 environment. The traits like 100 seed weight, plant height, number of pods per plant number of clusters per plant and number of branches per plant were identified as selection criteria for obtaining good parental lines in cowpea breeding programmes.

Effect of Weeds on Pre-flowering Insect Infestation and Seed Yield of Cowpea (Vigna unguiculata) in a Rainforest Area of Nigeria

1989 ◽  
Vol 25 (3) ◽  
pp. 343-347 ◽  
Author(s):  
Tom I. Ofuya
Keyword(s):  
Seed Yield ◽  
Vigna Unguiculata ◽  
Insect Infestation ◽  
Insect Populations ◽  
Empoasca Dolichi ◽  
Ootheca Mutabilis

SUMMARYPre-flowering insect infestation of cowpea, Vigna unguiculata, was monitored in weedy and weed-free plots in 1986 and 1987 in Akure, Nigeria. Weediness generally reduced infestations of both the leafhopper, Empoasca dolichi, and the flea beatle, Ootheca mutabilis. However, seed yield was reduced in the weedy plots despite heavier pre-flowering insect populations in the plots kept weed-free.

Evaluation of Advanced Breeding Lines of Cowpea (Vigna unguiculata L. Walp) for High Seed Yield under Farmers’ Field Conditions

2019 ◽  
Vol 7 (1) ◽  
pp. 12-23 ◽  
Author(s):  
Olawale Mashood Aliyu ◽  
Oluwafemi Oluwatosin Lawal ◽  
Abdulkabir Adesina Wahab ◽  
Usman Yaman Ibrahim
Keyword(s):  
Seed Yield ◽  
Vigna Unguiculata ◽  
Field Conditions ◽  
Breeding Lines ◽  
High Seed Yield

Some effects of environmental stress on seed yield of cowpea (Vigna unguiculata (L.) walp.) cv. Prima

1976 ◽  
Vol 44 (3) ◽  
pp. 527-546 ◽  
Author(s):  
R. J. Summerfield ◽  
P. A. Huxley ◽  
P. J. Dart ◽  
A. P. Hughes
Keyword(s):  
Environmental Stress ◽  
Seed Yield ◽  
Vigna Unguiculata

Observations on Insect Infestation and Damage in Cowpea (Vigna Unguiculata) Intercropped With Tomato (Lycopersicon Esculentum) in a Rain Forest Area of Nigeria

1991 ◽  
Vol 27 (4) ◽  
pp. 407-412 ◽  
Author(s):  
T. I. Ofuya
Keyword(s):  
Lycopersicon Esculentum ◽  
Seed Yield ◽  
Vigna Unguiculata ◽  
Rain Forest ◽  
Heliothis Armigera ◽  
Maruca Testulalis ◽  
Insect Infestation ◽  
Pod Sucking Bugs ◽  
Empoasca Dolichi ◽  
Ootheca Mutabilis

SUMMARYInsect infestation and damage in cowpea (Vigna unguiculala), planted sole or intercropped with tomato (Lycopersicon esculentum) was monitored in 1987 and 1988 in Akure, Nigeria. Infestation of cowpea byEmpoasca dolichiwas significantly reduced by intercropping with tomato in both years, except in the early season of 1988. Infestation of cowpea byOotheca mutabilis, Aphis craccivora, Megalurothrips sjosledti and Maruca testulaliswas not affected by intercropping with tomato in either year. Damage by pod-sucking bugs and Heliothis armigera was significantly higher in sole cowpea than in cowpea intercropped with tomato, in both years. Sole cowpea had a significantly lower seed yield than cowpea intercropped with tomato.Observaciones en cuanto a la infestación de insectos y daños en el caupí(Vigna unguiculata)sembrado en forma simultánea con tomate(Lycopersicon esculentum)en una zona de bosque tropical en Nigeria

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