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试验杂交水稻的分蘖数量除L301A×R29比不育系和常规高产品种“双桂36”较少外,D优63、D优64、青优中、协优64、威优64、威优35和华优63分别比其亲本和对照品种多,表现正显性超亲优势.青优中、协优64、威优64、威优35、华优63和D优63的分蘖数与~(32)P在分蘖中的分布(％)呈正相关.D优64、L301A×R29不呈正相关.D优63、D优64、协优64的分蘖数与~(14)C—同化物在化分蘖的分布(％)呈正相关,青优中、威优64、威优35华优63和L301A×R29不呈正相关.D优63、D优64、协优64和华优63的单苗干物重高于它们的亲本和对照品种.青优中、协优64、华优63、D优63、D优64的苗高也分别比其亲本和对照品种高.本文还讨论了杂交稻苗期生长优势、~(32)P和~(14)C在分蘖中的分布(％)与谷粒产量的关系.
In addition to L301A × R29, the number of tillers in the hybrid rice tested was less than that of the “Shuang Gui 36” in the conventional high yielding variety, D You 63, D You 64, Qingyouzhong, Xieyou 64, Weiyou 64, Weiyou 35 And Huayou 63 were more than their parents and control breeds, respectively, and showed positive super-parents’ superiority.The tiller numbers of Qingyouzhong, Xieyou 64, Weiyou 64, Weiyou 35, Huayou 63 and D You 63 were significantly correlated with ~ 32) P had a positive correlation with the distribution (%) of tillering.Dyou 64 and L301A × R29 had no positive correlation.The numbers of tillers and ~ (14) C-assimilates of D You 63, D You 64, The distribution of tillers (%) showed a positive correlation, but no correlation was found between Qingyouzhong, Weiyou 64, Weiyou 35, Huayou 63 and L301A × R29.Duyou 63, D You 64, Xieyou 64 and Huayou 63 Higher than their parents and control varieties.The seedling height of Qingyouzhong, Xieyou 64, Huayou 63, D You 63, D You 64 were also higher than their parents and control varieties respectively.The paper also discussed the hybrid rice seedling stage Growth, distribution of ~ (32) P and ~ (14) C in tillers (%) and grain yield.