玉米自交系磷效率基因型差异的筛选  

Selection of Genotypic Difference in Phosphorous Efficiency of Maize Inbredlines

作　　者：王艳[1] 孙杰[1] 王荣萍[1] 王文彦[2] 郑联寿[2] 张福锁[3] 

机构地区：[1]山西农业大学资源与环境学院,山西太谷030801 [2]山西省农业科学院玉米研究所,山西忻州034000 [3]中国农业大学植物营养系,北京100094

出　　处：《山西农业科学》2003年第1期7-10,共4页Journal of Shanxi Agricultural Sciences

基　　金：山西省归国人员资助项目(98061)。

摘　　要：从全国各地收集玉米自交系400份,在大田条件下初步进行了玉米耐低磷种质资源的筛选,研究了玉米自交系磷效率基因型差异。结果表明:①在低磷条件下,不同基因型玉米各性状间的差异大于高磷条件,而且耐低磷胁迫的能力具有较大的差异。②在两个供磷水平下,不同玉米自交系之间的产量都存在显著差异。中宗2号,太411,KH12耐低磷能力最强。从对磷的反应度来看,中宗2号,太411,187,58对供磷反应最大,而忻9005,KH12,XL12,冀257,冀35反应相对较小。Under low and high two soil P application levels, four hundred maize inbred lines used in China were selected to study phosphorus efficiency and related traits in the fields. The main results were summarized as follows:1.Genotypic differences which were found in many traits mainly on yield component at low P application level were larger than at high P and the ability in tolerance to low soil P was different.2.At two soil P application levels, significant variation was found in grain yield among maize inbreds. Zhongzong2,Tai411,KH12 were the most tolerant varieties to low soil P. On the other hand, Zhongzong2,Tai411,187,58 responded well to application on P fertilizer. However, Xin9005,KH12,XL12,Ji35,Ji257, were relatively low in responding to P applications.

关 键 词：玉米 自交系磷效率 基因型差异 筛选试验 

分 类 号：S513[农业科学—作物学]