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《Journal of Anhui Agricultural Sciences》 2008-29
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Correlation and Path Analysis of the Yield Character of Three-line Indica Hybrid Rice

TAN Chou-zhi et al(Biotechnology Professional Institute of Jiangxi Province,Nanchang,Jiangxi 330200)  
[Objective] The scientific reference for hybrid rice breeding would be provided through the experiment.[Method] The NCⅡcross design of 8×8(8 CMS lines and 8 restorer lines) was adopted to research the yield heterosis of 38 hybrid rice combinations.[Results] The results showed that: There existed significant heterosis in F1 generations.The heterosis was showed in the following characters such as spikelets per panicle,grains per panicle,density of seed-setting,plant height and yield per plant.The analysis of the correlation and the path showed that yield per plant had a significantly positive correlation with grains per panicle,density of seed-setting,spikelets per panicle and effective panicle;and the direct function of effective panicle,spikelets per panicle and grains per panicle to yield of single plant was very significant at 0.05 level or 0.01 level.[Conclusion] More panicle and larger panicle could be the orientation of rice breeding,but can not emphasize the improvement of the exclusive character,and some other characters were also considered simultaneously.To optimize structure of panicle per plant and grain per panicle can gain the best potential yield.
【CateGory Index】: S511.21
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