籼型水稻恢复系的秧苗素质和产量分析  

Analysis of Seedling Quality and Yield of Indica Rice Restorer Lines

作　　者：邹梦思 王晓忠 苏锐 罗靖凯 黎江凤 唐文帮 张桂莲[1] ZOU Mengsi;WANG Xiaozhong;SU Rui;LUO Jingkai;LI Jiangfeng;TANG Wenbang;ZHANG Guilian(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;State Key Laboratory of Hybrid Rice,Changsha,Hunan 410125,China;Hunan Hybrid Rice Research Center,Changsha,Hunan 410125,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]杂交水稻全国重点实验室,湖南长沙410125 [3]湖南杂交水稻研究中心,湖南长沙410125

出　　处：《杂交水稻》2024年第3期55-60,共6页Hybrid Rice

基　　金：国家自然科学基金项目(31871599);湖南省自然科学基金项目(2021JJ30350);湖南省重点研发计划项目(2021NK1001)。

摘　　要：以9311为对照(CK),对11份新选育的籼型水稻恢复系进行秧苗素质和产量比较分析。结果表明,与CK相比,恢复系7W1207、8W227、R1353的壮苗指数高、秧苗素质好且发根力强,即具有较高的株高、茎基宽、叶龄、单株叶面积、根干重、根冠比、发根数、发根最长根长和发根平均根长。与CK相比,除6W1844、7W1519外,其他9个恢复系的单株产量显著提高且增产明显;相关分析表明,单株产量与壮苗指数、发根力分别呈极显著、显著正相关。因此,建议在水稻恢复系选育中将壮苗指数、发根力作为强优恢复系前期筛选的重要指标,秧苗素质好、发根力强、单株产量高的7W1207、8W227、R1353等3个恢复系可在今后的育种中加以利用。Using 9311 as the control(CK),the seedling quality and yield of 11 new indica rice restorer lines were compared and analyzed.The results showed that compared with CK,three restorer lines of 7W1207,8W227 and R1353 had high strong-seedling index,good seedling quality and strong rooting ability with higher values in plant height,stem base width,leaf age,leaf area per plant,root dry weight,root shoot ratio,root number,maximum root length and average root length.Compared with CK,except 6W1844 and 7W1519,the other nine restorer lines had a significantly higher yield per plant.Correlation analysis showed that the yield per plant was very significantly and significantly positively correlated with strong-seedling index and rooting ability,respectively.Therefore,during the breeding of restorer lines,the strong-seedling index and rooting ability can be used as important indicators for the early screening of strong restorer lines.Three restorer lines of 7W1207,8W227 and R1353 with good seedling quality,strong rooting ability and high yield per plant can be used for breeding in future.

关 键 词：水稻 恢复系 秧苗素质 发根力 产量 

分 类 号：S511.04[农业科学—作物学] S318