耐低氧发芽水稻种质资源筛选  

Screening of Rice Germplasm Resources with Low Oxygen Tolerance for Germination

作　　者：王鑫澳 尹鑫军 肖峰 张屹 谢红军 郝明 敖和军[1] 曾晓珊 WANG Xin’ao;YIN Xinjun;XIAO Feng;ZHANG Yi;XIE Hongjun;HAO Ming;AO Hejun;ZENG Xiaoshan(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Hunan Rice Research Institute,Changsha,Hunan 410125,China;Huaihua Vocational and Technical College,Huaihua,Hunan 418099,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]湖南省水稻研究所,湖南长沙410125 [3]怀化职业技术学院,湖南怀化418099

出　　处：《作物研究》2024年第5期399-405,共7页Crop Research

基　　金：湖南省水稻产业技术体系质量安全与环境控制岗位专家项目(2022-2026)。

摘　　要：为了筛选可用的耐低氧发芽直播稻资源,以248份水稻种质资源为材料,设置干粒与催芽2个处理,对10 cm淹水7 d后种子的发芽指标进行对比分析。结果显示:干粒处理和催芽处理水稻种子的相对成苗率(RSP)分别为0.00~5.17和0.00~19.77,相对苗高(RSH)分别为0.00~0.73和0.00~0.94,相对根长(RRL)分别为0.00~0.68和0.00~4.26,催芽处理的水稻种质资源的RSP、RSH、RRL整体上均显著优于干粒处理;248份水稻种质资源中籼稻和粳稻均有耐低氧发芽潜质的资源,但在耐低氧发芽能力上,干粒处理为粳稻整体优于籼稻,催芽处理则为籼稻整体优于粳稻;干粒处理下H5的RSP、RSH、RRL均显著高于耐淹品种KHO与红麻占,具备较强的耐低氧发芽能力,可在育种上加以利用。In order to screen available direct-seeded rice resources with low oxygen germination tolerance,248 rice germplasm resources were used as materials,and two treatments,dry grain and germination promotion,were set up to compare and analyze the germination indicators of seeds after 7 days of 10cm flooding.The results showed that the relative seedling success rates(RSP)of rice seeds treated with dry seeds and germination treatments were 0.00-5.17 and 0.00-19.77,respectively.The relative seedling height(RSH)was 0.00-0.73 and 0.00-0.94,respectively,and the relative root length(RRL)was 0-0.68 and 0-4.26,respectively.The RSP,RSH,and RRL of rice germplasm resources treated with germination treatments were significantly better than those treated with dry seeds as a whole;Among the 248 rice germplasm resources,both indica rice and japonica rice have the potential resources of low-oxygen germination resistance,but in the ability of low-oxygen germination resistance,dry-grain treatment japonica rice is better than indica rice as a whole,and accelerated germination treatment japonica rice is better than japonica rice as a whole;The RSP,RSH and RRL of H5 treated with dry grains were significantly higher than those of flood-tolerant varieties KHO and HongMaZhan.It is a new germplasm resource with low oxygen tolerance and can be used in breeding.

关 键 词：水稻 耐低氧发芽 种质资源 筛选 

分 类 号：S511.024[农业科学—作物学]