Comparison between three methods of determining the relationships between yield and eight of its components in cowpea, Vigna unguiculata L. Walp

Ogunbodede, B. A.

doi:10.1016/0304-4238(89)90066-6

Cited by 5 publications

(7 citation statements)

References 6 publications

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“…For example, increased peduncles and pods per plants could lead to increased seeds per plant. However, in order of magnitude, seeds per plant and pods per plants were the most significantly correlated traits (r=0.95, 0.89, P=0.01) with yield (i.e., most contributory factors), a trend that corroborates Ogunbodede (1989). Seed size also contributed significantly to total seed yield (kg/ha) in cowpea as evident in this study and Ogunbodede's data (Ogunbodede 1989).…”

Section: Discussionsupporting

confidence: 75%

“…However, in order of magnitude, seeds per plant and pods per plants were the most significantly correlated traits (r=0.95, 0.89, P=0.01) with yield (i.e., most contributory factors), a trend that corroborates Ogunbodede (1989). Seed size also contributed significantly to total seed yield (kg/ha) in cowpea as evident in this study and Ogunbodede's data (Ogunbodede 1989). Taking together, it therefore possible to breed cowpeas that combine large seed size with high yield, although seed size recorded negative correlations with seeds per pods but not with seeds per plants (Ogunbodede 1989; Table 3 this data).…”

Section: Discussionsupporting

confidence: 62%

“…Ogunbodede (1989) had reported similar significant (P=0.01) and positive correlation between yield and other yield related traits in cowpea except for threshing percentage. For example, increased peduncles and pods per plants could lead to increased seeds per plant.…”

Section: Discussionmentioning

confidence: 56%

“…Seed size also contributed significantly to total seed yield (kg/ha) in cowpea as evident in this study and Ogunbodede's data (Ogunbodede 1989). Taking together, it therefore possible to breed cowpeas that combine large seed size with high yield, although seed size recorded negative correlations with seeds per pods but not with seeds per plants (Ogunbodede 1989; Table 3 this data). Rachie and Roberts (1974) and Drabo et al (1985) reported similar negative correlations between seed size and seeds per pod.…”

Section: Discussionmentioning

confidence: 62%

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Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Aliyu¹,

Makinde²

2016

Plant Breed. Biotech.

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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Poor seed yield remains a great challenge for cowpea production in sub-Sahara Africa and continuous evaluation of available genetic resource to develop high and stable yielding varieties is the panacea to this regional food security conundrum. In this study, 21 cowpea breeding lines were evaluated for phenotypic analysis of seed yield components for two years in a randomized complete block design of 3 replications. All the yield components exhibited significant genotypic variation, while flowering, pod maturity and seed yield traits recorded significant variation for years and its interactions. These cowpeas, which are predominantly early-medium maturing biotypes, exhibited relative phenotypic stability for the yield components across years (seasons) except seed yield, being a final product of complex physiological process. Relationships between flowering/pod maturity and seed size were positive and significant. By contrast, pods/plant, seeds/plant and total seed yield recorded negative correlations with pod maturity. However, seeds/plant and pods/plant are the most contributory components to seed-yield with correlation coefficients of r=0.95, 0.89, respectively. Although seed size had negative correlation with seeds/pod, but strong linkage between seed number (seeds/pod, seeds/plant) and seed yield; and additive gene nature of seed size, suggest a weak size-number trade-off in cowpea. Genetic variance components indicates high genetic contributions over non-genetic to plant phenotypic variability with high heritability values (0.75-0.91). Six cowpea lines (IT10K-837-1, IT07K-299-6, IT10K-815-5, IT10K-817-7, IT08K-150-24, and IT11K-61-82) with multiple quality yield traits could be selected for immediate farmers use and future genetic improvement.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 62%

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Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Aliyu¹,

Makinde²

2016

Plant Breed. Biotech.

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“…Knowledge of the association between characteristics of distinct landraces is important for breeding, especially when selection of a trait is hampered by low heritability and/or difficulties with measurement and identification (CRUZ et al, 2012). Moreover, path analysis has been shown to be the best method for comparisons between grain yield and landrace characteristics (OGUNBODEDE, 1989).…”

Section: Introductionmentioning

confidence: 99%

Green Bean Yield and Path Analysis in Cowpea Landraces

et al. 2016

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-Cowpea (Vigna unguiculata (L.) Walp.) is widely cultivated in northeast Brazil for production of both green grains and dry grains. Green grains are cowpea grains with a 60 to 70% moisture content that are very appreciated by the local people. The cultivation of cowpea in northeast Brazil is performed mostly using landraces and the low yields achieved in some areas of that region are generally attributed to the cultivation of less productive landraces. The objectives of this research were to identify the best landraces in terms of green bean yield and the characters that hold the most positive direct effects on this yield via path analysis. Twelve landraces of undetermined growth were evaluated in two experiments conducted in Mossoró, Brazil. The first experiment (E1) was sprinkler-irrigated and the second (E2) was conducted under rainfed conditions, but was irrigated whenever necessary. Pod yield and dimensions and green grains were evaluated, in addition to the main grain yield components. A randomized block design with five replications was used. The data presented here identified eight landraces with the highest yields. In addition, cowpea yield was higher in the dry season (E1) than in the rainy season (E2). The number of pods per plant had the largest direct positive effect on green grain yield.Keywords: Vigna unguiculata. Green grain. Landraces. RENDIMENTO DE GRÃOS VERDES E ANÁLISE DE TRILHA EM VARIEDADES TRADICIONAIS DE FEIJÃO-CAUPI

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Variance components, correlation and path analyses in cowpea (Vigna unguiculata L., Walp)

Aliyu

Tiamiyu

Usman

et al. 2021

J. Crop Sci. Biotechnol.

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Comparison between three methods of determining the relationships between yield and eight of its components in cowpea, Vigna unguiculata L. Walp

Cited by 5 publications

References 6 publications

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp)

Green Bean Yield and Path Analysis in Cowpea Landraces

Variance components, correlation and path analyses in cowpea (Vigna unguiculata L., Walp)

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