Agronomic performance and genetic variability of cowpea (Vigna unguiculata) Accessions

IF 0.8 4区生物学 Q3 AGRONOMY

Legume Research Pub Date : 2019-06-24 DOI:10.18805/LR-450

D. K. Nkoana, A. Gerrano, E. Gwata

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引用次数: 9

Abstract

Cowpea is a drought tolerant food legume but yields are generally low in South Africa due to non-availability of improved varieties. The current study was undertaken to evaluate agronomic performance of cowpea germplasm and select the candidate accessions for breeding population and cultivation by small-scale farmers in South Africa. A randomized complete block design with three replications was used for the experiment. Data were collected on the agronomic traits including days to 50% maturity, days to 95% maturity, hundred seed weight, leaf area index, number of branches, number of internodes, number of seeds per plant, plant height, number of pods per plant, pod length, dry biomass weight per plant, grain yield per plant and grain yield per hectare. Highly significant differences were observed among the accessions for all traits. The grain yield per hectare was correlated positively and significantly with number of pods per plant and grain yield per plant showing a scope for simultaneous improvement of yield and yield related traits. Principal Component biplot revealed that accessions Acc2024, Acc5352, Acc2355, Acc4565, Glenda and L-cwp3 were the most genetically distinct accessions and can serve as potential candidate parental lines for hybridization to achieving transgressive segregation population in breeding programmes.

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豇豆(Vigna unguiculata)材料的农艺性能和遗传变异

豇豆是一种耐旱的食用豆科植物，但由于没有改良品种，南非的产量普遍较低。本研究旨在评价豇豆种质资源的农艺性能，并为南非小农的育种群体和栽培选择候选材料。试验采用随机完全区组设计，共3个重复。收集了成熟天数至50%、成熟天数至95%、百粒重、叶面积指数、分枝数、节间数、单株种子数、株高、单株荚果数、荚果长、单株干生物量、单株籽粒产量和每公顷籽粒产量等农艺性状的数据。各种质间各性状差异均极显著。每公顷粮食产量与单株荚果数、单株粮食产量呈显著正相关，表明产量及相关性状有同步提高的空间。主成分双图显示，Acc2024、Acc5352、Acc2355、Acc4565、Glenda和L-cwp3是遗传差异最大的材料，可以作为杂交的潜在亲本，实现越界分离群体。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Legume Research AGRONOMY-

CiteScore

1.30

自引率

37.50%

发文量

256

审稿时长

6-12 weeks

期刊介绍： Legume Research An International Journal. The Journal is an official publication of Agricultural Research Communication Centre. It is designed to bring out the original research articles on genetics, breeding, physiology, bacterial avtivity, production, quality, biochemistry and seeds of legumes crops. The objective of the journal is to serve as a forum for scientific community to publish their research findings on legumes ans to provide basis for new research. Journal is being scanned in the important indexing and abstracting services.