Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (36): 115-119.doi: 10.11924/j.issn.1000-6850.2014-2437

Special Issue: 资源与环境

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Comprehensive Assessment of Drought Resistance of 20 Proso Millet Germplasm Resources
in Whole Growth Period

Wang Haigang1, Chen Ling1, Wang Junjie1, Cao Xiaoning1,Dong Junli1, Wang Lun1, Yang Tianyu2, Qiao Zhijun1   

  1. (1Institute of Crop Germplasm Resources of Shanxi Academy of Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture, Taiyuan 030031;2Crop Research Institute, Gansu Province Academy of Agricultural Science, Lanzhou 730070)
  • Received:2014-09-08 Revised:2014-12-13 Accepted:2014-11-24 Online:2015-03-20 Published:2015-03-20

Abstract: In order to clarify drought resistance of proso millet applied in field production in Shanxi, we identified its drought resistance during the whole growth period and measured nine traits, including plant height, panicle length, stem diameter, panicle weight, grain weight per spike, straw weight per plant, node numbers of main stem, 1000-grain weight and effective panicles, under different treatments. Principal component analysis and stepwise regression analysis were used for comprehensive evaluation of drought resistance during the whole growth period and screening the drought index. The results showed that there were correlations among 9 phenotypic traits. The coefficient of variation of panicle weight and straw weight per plant sharply reduced under normal water supply and drought stress. Landrace‘yellow millet’had the strongest drought resistance (D=0.87), integrated drought D value and membership function value of yield had significant correlation (r=0.5159, P<0.05). Panicle weight and straw weight per plant had significant impact on drought resistance and could be taken as comprehensive indexes of drought resistance identification in growth period.