耐低磷水稻基因型筛选评价指标  

Screening and Evaluating Index for Rice Genotypes with Low Phosphorus Tolerance

作　　者：李莉梅[1] 郭荣发[2] 

机构地区：[1]湛江师范学院广东高校边缘热带特色植物工程技术开发中心,广东湛江524048 [2]广东海洋大学农学院,广东湛江524088

出　　处：《西北农业学报》2013年第2期30-34,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：广东省“十五”重大科技专项(2002A2040902);湛江市科技攻关项目(2012C3103019)

摘　　要：以14个不同基因型水稻为供试材料,对低磷和正常供磷两个处理下水稻分蘖期相对生物性状、相对磷吸收和利用效率以及成熟期相对产量进行研究。结果表明,相对地上部干质量可以作为分蘖期筛选水稻耐低磷能力的首选形态指标,其次是相对干物质量。筛选耐低磷水稻基因型时,在早期筛选的基础上,还要考虑成熟期的籽粒产量。Under conditions of the low P and normal P supply, fourteen rice genotypes were selected to study the differences in relative biological characters and relative P uptake and utilization efficiency at tillering stage, and grain yield at maturity. The result showed that the relative dry mass of shoot would be the best evaluation or screening index at tillering stage, and total relative plant dry mass was the secondary screening criterion. It was necessary to consider the rice grain yield while screening rice genotypes with low P tolerance.

关 键 词：水稻 基因型 筛选 指标 磷效率 

分 类 号：S511[农业科学—作物学]