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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (18): 1-6.doi: 10.11924/j.issn.1000-6850.casb14120112

Special Issue: 水稻

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Correlation Research on Dry Matter Accumulation and Yield Characters of Different Rice Varieties

Yan Ping, Zhang Shuli, Yu Yanmin, Mu Fengchen, Wu Hongtao, Xu Zhenhua, Zhou Jinsong   

  1. (Wuchang Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Wuchang Heilongjiang 150229)
  • Received:2014-12-17 Revised:2015-01-06 Accepted:2015-01-08 Online:2015-07-27 Published:2015-07-27

Abstract: In order to discuss the relationship between dry matter accumulation in different rice varieties and yield character in southern rice region of Heilongjiang Province, 6 rice varieties of different main cultivated stages in this rice planting area were taken as test materials, and the research was carried out by plot experiment. The results indicated that the general trend of dry matter accumulation of different rice varieties was low in early stage, high in late stage, and middle stage took the second place; dry matter accumulation proportion of different rice varieties was different between before heading and after heading, after heading was significantly higher than before heading. The dry matter accumulation from high to low was as follows: ‘Songgeng 9’, ‘Songgeng 3’, ‘Songgeng 2’, ‘Songgeng 6’, ‘Wuyoudao1’, ‘Tengxi138’. The yield from high to low was as follows: ‘Songgeng 9’, ‘Songgeng 3’, ‘Songgeng 6’, ‘Songgeng 2’, ‘Wuyoudao1’, ‘Tengxi138’. Dry matter accumulation from jointing to heading stage and from heading to maturity presented significant positive correlation with yield. Dry matter accumulation before heading presented extremely significant positive correlation with grain number per panicle and 1000 grain weight. Dry matter accumulation after heading presented significant positive correlation with yield. Total dry matter accumulation presented extremely significant positive correlation with yield. Percentage of earbearing tiller presented extremely significant positive correlation with yield, maturing rate presented significant positive correlation with yield. In conclusion, reasonably increasing dry matter accumulation from jointing to maturity is beneficial to improving the yield in this rice planting area.