湖南秋季不同矮生豇豆品种评价及筛选

Evaluation and screening of different dwarf cowpea(Vigna sinensisEndb)varieties in autumn in Hunan province

为探究不同矮生豇豆常见品种之间的差异,为选种、育种、豇豆品种更新换代提供数据参考,选取10个常见矮生豇豆品种,通过对品种性状数据收集,运用显著性差异分析、相关性分析、主成分分析、聚类分析、公因子得分法等方法,对不同矮生豇豆品种进行综合评价与筛选。结果表明,在湖南省秋季栽培中,矮生豇豆品种生长期较短,从播种到采收总时长51 d左右。通过主成分分析可将15个农艺性状指标降维至5个综合因子,累积方差贡献率为88.475%;依据聚类分析可分为5大类,分别是林丰长地白、玉抗无架豆、摘不败、美国无架豆、其他品种。根据综合评价得分情况,筛选出林丰长地白、玉抗无架豆、美国无架豆3个表现良好的品种,适合在湖南秋季栽培。研究结果对湖南省矮生豇豆选种育种、品种迭代以及国内矮生豇豆产业的发展具有一定的指导及参考价值。

In order to explore the differences among different common dwarf cowpea(Vigna sinensis Endb)varieties,and provide data reference for seed selection,breeding and variety replacement of cowpea,10 common varieties of dwarf cowpea were studied through the collection of variety traits data,significance difference analysis,correlation analysis,principal component analysis and cluster analysis to comprehensively evaluate and screen different varieties of dwarf cowpea.The results showed that in the autumn cultivation of dwarf cowpea in Hunan province,the growth period was short,and the whole period from sowing to harvest was about 51 days.The principal component analysis indicated that the 15 agronomic traits indexes were reduced to 5 comprehensive factors,and the cumulative variance contribution rate was 88.475%.According to the cluster analysis,they were divided into 5 categories,Linfeng Changdibai,Yukang Wujiadou,Zhaibubai,Meiguo Wujiadou and other varieties,respectively.According to the comprehensive evaluation score,three varieties(Linfeng Changdiba,Yukang Wujiadou and Meiguo Wujiadou)with good performance were screened out and suitable for autumn cultivation in Hunan province.The results provided some certain guiding and reference value for dwarf cowpea seed selection and breeding in Hunan province and the development of dwarf cowpea industry in China.