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Studies on Yield Components and Physiology of Liaojing Series Rice Varieties

ZHANG Xiu-ru,QIU Fulin,WANG Xian-ju,et al. (Rice Research Institute,Liaoning Academy of Agricultural Sciences,Shenyang 110101,China)  
Yield components and physiology of 8 typical varieties of Liaojing series rice varieties were studied. The results showed that Liaojing series rice with high yield and quality have the characters as below: The rice cultivars have the plant height range from 105-115 cm,panicle length range from 14-18cm,primary riches branches range from 10-13,secondary riches branches range from 15-22,effective panicles per 667m2 range from 190 000-220 000,ripened grains per panicle range from 100-120,1000-grain weight range from 24-25g. So percentage of ripened grains,ripened grains per panicle and percentage of ripened grains may limit the yield increment of Liaojing series rice. Suitable LAI and economic coefficient is important in breeding of high yield new varieties of Liaojing series rice.
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