苗期不同基因型水稻耐低磷能力的鉴定与评价研究  

Identification and Evaluation of Tolerance to Low-phosphorus Stress on Different Rice Genotypes at Seedling Stage

作　　者：李华慧[1] 辜琼瑶[1] 黄平[1] 奎丽梅[1] 涂建[1] 张洪亮[2] 卢义宣[1] 张云[1] 陈忆昆[1] 李自超[2] 

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650205 [2]中国农业大学教育部作物杂种优势重点实验室和北京市遗传改良重点实验室,北京100193

出　　处：《西南农业学报》2014年第3期925-930,共6页Southwest China Journal of Agricultural Sciences

基　　金：国家"863"计划课题(2011AA10A101);农业部"948"项目[2011-G1(2)-25和2011-G2B];国家现代农业产业技术体系建设专项资金(CARS-01-81)

摘　　要：本试验对前人用不同方法筛选出的28份耐低磷种质资源在同一条件下进行苗期耐低磷能力研究,试验结果表明,35×10-6磷水平下可有效鉴定苗期各水稻基因型的耐低磷能力,以苗期相对根干重作为水稻耐低磷能力的鉴定指标即可。以相对根干重为筛选指标获得苗期耐低磷种质共14份,分别为武糯1号、盐粳2号、双城糯、麻酒谷、软稻子、大红芒、大白芒、有芒小红板稻、麻谷子、普粘7号、嘉农育257、农林12、意大利4号、滇屯502,这些品种可作为磷高效遗传研究或育种利用的重要种质资源。28 different rice varieties of tolerance to low-phosphorus, were identified and evaluated through different methods and different people, which were used as the materials for tolerance to low-phosphorus stress on the same condition at seedling stage. The results showed that the optimum P concentration for screening rice germplasm tolerant to low phosphorus stress was 35 × 10^ -6 at seeding stage, and the rela- tive root dry weight could be used as the index for evaluating the ability of rice tolerant to low phosphorus. According to this index, 14 varie- ties, they are Wunuo 1, Yanjing 2, Shuangcbengnuo, Majiugu, Ruandaozi, Dahong^nang, Dabaimang, Youmangxiaohonghandao, Maguzi, Puzhan 7, Jianongyu257, Nonglin12, Yidali4, DiantunS02, can be used as resources of genetic research or breeding for phosphorus efficient utilization.

关 键 词：水稻 苗期 耐低磷能力 鉴定 评价 

分 类 号：S511[农业科学—作物学]