玉米吸收磷素营养的代谢及分布  

METABOLISM AND DISTRIBUTION OF P IN MAIZE PLANTS

作　　者：王晋[1] 强继业[1] 杨林楠[1] 杨建平[1] 张光勇[1] 许丽仙[1] 

机构地区：[1]云南农业大学基础与信息工程学院,云南昆明650201

出　　处：《西南农业大学学报（自然科学版）》2002年第2期159-160,共2页Journal of Southwest Agricultural University

基　　金：云南省科委资助项目

摘　　要：应用3 2 P示踪研究玉米的磷素代谢及分布 ,结果表明 :3 2 P经玉米吸收后 ,代谢各成分所占百分数为 :RNA—3 2 P最多为 6 1.2 6 % ,DNA—3 2 P为 2 3.0 8% ,脂类—3 2 P为 1.32 % ,有机—3 2 P为 13.0 4 % ,无机—3 2 P最小为 1.30 %。整株吸收率与时间成显著正相关。说明磷素在玉米植株体内的转化。P tracer technique was used to investigate phosphate metabolism and distribution in maize plants. P in RNA, DNA and fat accounted for 61.26%, 23.08%, 1.32%, respectively, of the P assimilated, and the percentage of organic and inorganic P was 13.04% and 1.30%. Most of the assimilated P was found in the root of the plants, followed by the stem and the lateral leaves.

关 键 词：玉米 磷素 代谢 分布 放射性示踪技术 吸收 

分 类 号：S513.01[农业科学—作物学]