普通菜豆种质资源表型鉴定及多样性分析.docVIP

普通菜豆种质资源表型鉴定及多样性分析 王兰芬1 武晶1 王昭礼2 余莉2 吴宪志2 张时龙2 王述民1* （1中国农业科学院作物科学研究所 / 农作物基因资源与基因改良国家重大科学工程, 北京 100081，2贵州省毕节农，贵州毕节，551700 摘 要 对64份普通菜豆核心种质在贵州毕节进行了表型鉴定，结果表明，普通菜豆具有丰富的形态性状多样性。总变异数为，平均为8.34，变异范围2~31；为0.63，变异范围为0.02~0.91。通过多变量的主成分分析， 的贡献率较大，分别为17.73%、15.35%和11.33%。依据表型鉴定数据信息，将供试种质聚类并划分为4组。Ⅰ组主要为直立有限的大粒资源，大多属于安第斯基因库；Ⅱ组为直立无限生长习性的小粒资源，属于中美基因库；Ⅲ组主要以蔓生无限为主，包括小部分直立无限和匍匐无限的资源；Ⅳ组为蔓生无限生长习性，分枝数最少的资源。 关键词：普通菜豆；种质资源；形态多样性；聚类分析；主成分分析 Morphological Diversity and Classification of Common Bean(Phaseolus vulgaris L.) Germplasm Resource WANG Lan-fen, WU Jing, WANG Zhao-li, YU Li, ZHANG Shi-long, WANG Shu-min (1Institute of Crop Sciences ,Chinese Academy of Agricultural Sciences/ National Key Facility for Crop Gene Resources and Genetic Improvement, Beijing 100081, 2Agricultural Science Institute of Bijie,Bijie Guizhou 551700) Abstract: The morphological diversity and classification of 646 common bean (Phaseolus vulgaris L.) germplasm resources were conducted in Bijie Guizhou in 2015. The results showed that the morphological diversity was high among the accessions assessed in this study. A total of 367 variations were detected with an average of 8.34 variations and 0.63 Ht per phenotypic trait.The range of variation was from 2 to 31 and the range of PIC was from 0.02 to 0.91. Three principal components totally represented 44.21% of morphological diversity.The first, second and third principal component represented 17.53%,15.35% and 11.33% of morphological diversity respectively. Based on the morphological data, 646 accessions were clustered into 4 groups. Ⅰgroup showed the erect determinate growth habit, higher diversity and bigger seed mainly from the Andes gene pool. Ⅱgroup with the indeterminate growth habit, the lowest diversity, smallest seed size, mainly from the Mesoamerican gene pool. 335 accessions were clustered in Ⅲ group with the highest diversity, most of them showed the sprawl indeterminate growth habit, plant height was distributed widely with an average 180.27 cm