不同新育籼型水稻不育系的秧苗素质分析

目的]了解新育籼型水稻不育系的秧苗素质。方法]以G46A(CK1)、中九A(CK2)为对照不育系,从茎、叶和根的生长方面分析8个新育籼型水稻不育系的苗期生长势。结果]除根长外,不育系与对照其他各性状相比都差异极显著。总体来看,366A的苗高、白根率和分蘖均显著好于对照,970A的苗高、干重和分蘖均显著好于对照,对照中CK2优于CK1,364A、388A、368A、393A的各性状与CK2差异不显著,却好于CK1,G776A弱于CK2,却好于CK1。366A和970A是显著优于对照的不育系,G200A是显著弱于对照的不育系。结论]该研究为新育籼型水稻不育系的利用提供了客观依据。

Analysis on the Seedling Quality of Different Newly Bred Sterile Lines of Indica Rice

Objective] The aim was to know about the seedling quality of newly bred sterile lines of indica rice.Method] With G46A(CK1) and Zhongjiu A(CK2) as contrast sterile lines,the growth vigor of 8 newly bred sterile lines of indica rice in seedling stage were analyzed on the growths of stem,leaf and root.Result] Except for root length,the other characters had extremely significant differences between the sterile lines and CK.Totally,the seedling height,rate of white roots and tillering of 366A were significantly better than that of CK,the seedling height,dry weight and tillering of 970A were significantly better than that of CK and CK2 was superior to CK1 among two CK.The various characters of 364A,388A,368A and 393A had no significant difference from that of CK2,but were better than that of CK1.G776A was weaker than CK2,but better than CK1.366A and 970A were the sterile lines significantly superior to CK and G200A was the sterile line significantly weaker than CK.Conclusion] The research supplied objective foundation for the utilization of newly bred sterile lines of indica rice.