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《Chinese Journal of Grassland》 2016-01
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Study on Morphological Diversity of Elymus nutans Germplasm Resources from Qinghai-Tibetan Plateau

CHEN Shi-yong;CHEN Zhi-hua;ZHOU Qing-ping;LI Shi-dan;MA Xiao;ZHANG Xin-quan;College of Life Science and Technology,Southwest University for Nationalities;Institute of Qinghai-Tibetan Plateau,Southwest University for Nationalities;Department of Grassland Science,Sichuan Agricultural University;  
The morphological diversity of 54 Elymus nutans germplasm resources from Qinghai-Tibetan Plateau including Sichuan,Tibet,Gansu,Qinghai and Xinjiang province were conducted in the study based on 30 morphological traits during 2007~2009.The results showed that the coefficients of variation of the morphological traits ranged from 7.25% to 33.89% with an average of 16.05%,the ShannonWeaver diversity index ranged from 1.6996 to 2.5487 with a mean of 2.2118,which revealed a wealth of phenotypic variation among the materials.Based on the morphological variation data,the UPGMA cluster analysis were carried out using the Euclidean distance in NTSYS software.The accessions were divided into several parts including low-,medium-and tall-types plants.Additionally,the principal component analysis based on morphological data indicated that the first 8principal component eigen values were relatively high,which could explain the 76.67% of the total variation.The principal component analysis also indicated that length of glume,height,stem length,spikelet length,length of lemma were the main sources of variation,which could mostly reveal the trend of morphological variation of Elymus nutans germplasm.
【Fund】: 西南民族大学中央高校基本科研业务费专项基金项目(2014NZYQN41);; 四川省科技支撑计划(2015SZ0062);; 国家科技支撑计划(2011BAD17B03)资助
【CateGory Index】: S543.9
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