Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (6): 7-14.doi: 10.11924/j.issn.1000-6850.2014-2508

Special Issue: 水稻 农业气象

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Comprehensive Evaluation of Different Paddy (Upland) Rice Varieties (Line) Under Drought Stress

Wang Shimei1, Shen Guoxia2, Chen Xiuchen1, Zhu Qisheng1, Wang Haijuan1, Wang Shen1   

  1. (1Rice Research Institute Anhui Academy of Agriculture Science, Hefei 230031;2General Services Department of Agriculture of Huailin, Chaohu Anhui 238054)
  • Received:2014-09-15 Revised:2015-02-05 Accepted:2014-11-17 Online:2015-03-20 Published:2015-03-20

Abstract: In order to expand the application of rice-drought-resources, and improve rice-drought-resistance breeding efficiency, this paper was comprehensive evaluation analysis of 105 materials, which paddy (upland) rice from 17 different countries. Under drought stress by identical-discrepant analysis method, 8 agronomic which were plant height, panicles, panicle length, grains per panicle, each spike total grains, seed rate, grain weigh and grain weight per plant, and economic traits referred to a comprehensive evaluation and analysis. The results showed that there were 60 “poor” varieties, accounting for 57.1%; 22 “general” varieties, accounting for 21%; 10 “better” and “good” varieties, each accounting for 9.5%; “choiceness” only 4 varieties, accounting for 3.8%, such as, IR77298-14-1-2-13, IR77298-5-6-18, CACHO PRETO, IR77298-5-6-11, all varieties were indica rice. Indica rice varieties of drought resistance were significantly higher than japonica rice varieties, identical-discrepant comment with different levels of drought was closely related to 3 traits, which were grains per panicle, seed setting rate and grain weight per plant.