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《Journal of Triticeae Crops》 2010-06
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Analysis of Main Agronomic Traits of Several Tibetan Naked Barley

MENG Xia~1,ZHUO Ga~1,DA CI Zhuo-ga~2,LUAN Yun-fang~2 (1.Alpine Crop Molecular Breeding Laboratory,Tibet Agriculture and Animal Husbandry College,Nyingchi.Tibet 860000,China; 2.Faculty of Plant Science and Technology,Tibet Agriculture and Animal Husbandry College,Nyingchi,Tibeti 860000,China )  
In order to provide high quality varieties for breeding Tibetan barley and to provide corresponding techniques for high production in cultivating tibetan barley,34 agronomic traits of naked barley from 6 districts were investigated.The results showed that agronomy traits of tibetan barley had diverse genetic variation with characteristics of short stem,abundant spikelet,and low grain weight etc.Correlation analyses indicated that there were complex correlations between each agronomic traits of tibet barley.For example,there were significant positive and partial correlation between number of spikelet and plant height,available spikelet number per individual and spikelet length,number of total spikelet and spikelet length.The correlation between available spikelet per individual and plant height was negatively significant.There was significant negative partial correlation between grain weight and available spikelet per individual.Principle component analyses(PCA) resulted 4 main principle components with cumulative contribution rate reaches up to 91.19%.Spikelet type contributes most with rate reaches up to 46.4338%.Tested materials were clustered into three main groups based on genetic distance at 5.18 levels.The three groups are short stem with short spikelet length and small number of seeds,long spikelet length with high number of seeds,high number of seeds with heavy grain weight.
【Fund】: 国家自然科学基金项目(30660080);; 教育部重点项目(2007113)
【CateGory Index】: S512.3
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