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《Modern Agricultural Science and Technology》 2011-16
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Research on Heterosis of Dian-type Hybrid Rice

SHEN Xue-lian(Dali University,Dali Yunnan 671003)  
The paper studied the super-midparental heterosis and high value parent advantages on fifteen characters of Dian-type hybrid rice F1,such as plant height,panicles per plant,ear length,the grains,grain density,seed setting rate,grain weight,10-grain long,10-grain wide,brown rice rate,milled rice rate,milled rice rate,percentage of chalky grains,chalky whiteness,rice grain length proportion.The results showed that the combination which took Dianjingyou 5 and Zhongdan 2 as the female parent had strong advantages in yield traits,the advantages in the quality traits were not significant,but the combination with the same female parent and different male parent effected the advantage.The combination which took Dianjingyou 1 as femail parent had no significant advantage.The problems on lower seed seeting rate and lower grain of hybrid rice needed to be studied.
【CateGory Index】: S511.22
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