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《Chinese Journal of Rice Science》 2016-03
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Relation of Plant Type Traits with Yield and Quality in the RIL Population Derived from Cross Between Chinese Rice Variety and Japanese Rice Variety

XU Hai;GONG Yan-long;XIA Yuan-ye;DU Zhi-min;YAN Zhi-qiang;WANG Hua-jie;CHEN Wen-fu;XU Zheng-jin;Institute of Rice Research,Shenyang Agricultural University/Key Laboratory of Northeast Rice Biology and Breeding,Ministry of Agriculture/Key Laboratory of Northern Japonica Super Rice Breeding,Ministry of Education/Key Laboratory of Northern Japonica Genetics and Breeding of Liaoning Province;  
The F9 recombinant inbreed lines population(RIL population)derived from the cross between Liaojing 5,the most representative rice variety with erect panicle type in the northeast of China,and Akita Komachi,the famous rice varieties with curved panicle type and good quality in Japan,were constructed through single seed descent method to study the variation of plant type traits and their relation with rice yield and quality in the hybrid progenies of cross between typical Chinese rice variety and Japanese rice variety.The results showed that segregation and recombination occurred in plant-type,yield and quality traits in the RIL population.Plant height,the length of top third and fourth internodes and the leaf angle and yield were significantly positively correlated.The higher the plant height,the greater the degree of curve of the panicle,and the narrower the three top leaves,the better processing quality and appearance quality.The correlation between taste value and the vast majority of plant type traits was not significant,and only the width of top third leaf,the number of secondary rachis branches and grain density were negatively significantly correlated with taste value.Further analysis of the relation between grain yield and quality revealed that higher yield led to higher head milled rice rate,but worse taste.The plant type traits and yield and quality characters were closely related,despite the yield and taste value were difficult to unity,a tiny fraction of lines with high yield and good taste could be found in the RIL population.The lines with high yield and good taste mainly featured long panicle and top internode.
【Fund】: 国家现代农业产业技术体系建设专项(CARS-01-01A);; 辽宁省科技厅北方粳稻育种与生产技术创新团队项目(201404235);; 辽宁省教育厅科学研究一般项目(L2013257)
【CateGory Index】: S511
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