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首页> 外文期刊>Open Agriculture >Phenotypic diversity for agro-morphological traits in pigeon pea landraces [(emCajanus cajan/em L.) Millsp.] cultivated in southern Benin
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Phenotypic diversity for agro-morphological traits in pigeon pea landraces [(emCajanus cajan/em L.) Millsp.] cultivated in southern Benin

机译：贝宁南部种植的木豆豌豆地方品种[（ Cajanus cajan L.）Millsp。]的农业形态性状的表型多样性

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Pigeon pea is an important but unfortunately neglected grain legume crop in Benin. In this study, the phenotypic diversity in 84 landraces from Benin and four advanced varieties were evaluated at two locations during two consecutive rainy seasons. Twelve quantitative and ten qualitative variables were recorded. A wide range of variation was observed in qualitative traits as well as in quantitative variables. The overall Shannon–Weaver diversity index ranged from 0.41 (pod hairiness) to 1.51 (seed colour). Analysis of variance revealed highly significant differences among accessions for all quantitative traits, except the number of seeds per pod, the days to maturity and the seed yield per plant. In all quantitative traits, phenotypic coefficient of variation was higher than genotypic coefficient of variation indicating a substantial environmental effect on their variability. However, some traits (days to flowering, pod width, number of secondary branches and 100 seed weight) showed great value of heritability. Hierarchical clustering on principal components subdivided the collection from Benin into two groups that were clearly separated from the group of advanced varieties. The results gathered from this study have important implications for pigeon pea germplasm characterization and conservation while the inferred phenotypic groups could be used for parental selection and heterotic crossings in pigeon pea breeding in Benin.
机译：木豆是贝宁重要但不幸的是被忽视的豆类作物。在这项研究中，在连续两个雨季的两个地点，对来自贝宁和四个高级品种的84个地方品种的表型多样性进行了评估。记录了十二个定量和十个定性变量。在定性特征和定量变量中观察到了广泛的变化。 Shannon-Weaver总体多样性指数范围从0.41（豆荚毛羽）到1.51（种子色）。方差分析显示，除了每个豆荚的种子数量，成熟天数和每株植物的种子产量外，所有定量性状的种质间差异都很大。在所有数量性状中，表型变异系数均高于基因型变异系数，表明环境对其变异性具有实质性影响。但是，某些性状（开花天数，荚果宽度，次枝数和100种子重量）显示出很高的遗传力价值。基于主要成分的层次聚类将贝宁的收藏分为两个组，这两个组与高级品种组明显分开。这项研究收集的结果对木豆种质的表征和保存具有重要意义，而推断的表型群体可用于贝宁木豆育种中的亲本选择和杂种杂交。

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