应用生态学报2011，Vol.22Issue(5)：1169-1174,6.
协青早B//协青早B/东乡野生稻BC1F9群体低磷耐性鉴定及其生理机制
Low-phosphorus tolerance and related physiological mechanism of Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations
摘要
Abstract
By the method of water culture, the low-phosphorus tolerance of 221 lines of Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations was indentified. The morphological indices including plant height, leaf age, yellow leaf number, and shoot dry mass as well as the physiological indices including MDA, soluble sugar, and shoot phosphorus content were measured, also, the phosphorus efficiency was calculated, and the correlations among the indices were analyzed. All the 221 lines had differences in the seven test indices, and the low-phosphorus tolerance lines under low-phosphorus stress had higher values of relative leaf age, relative plant height, relative shoot dry mass, and relative soluble sugar content, but lower values of relative yellow leaf number and relative malondialdehyde content. The relative shoot phosphorus content had less difference. Phosphorus efficiency was positively correlated with phosphorus utilization efficiency and phosphorus uptake efficiency, and the correlation between phosphorus efficiency and phosphorus utilization efficiency was at significant level (P＜0. 01) , suggesting that the low-phosphorus tolerance capability of the low-phosphorus tolerance lines was mainly attributed to the high phosphorus utilization efficiency of the lines, namely, low-phosphorus tolerance lines had stronger capability in synthesizing dry mass with per unit phosphorus uptake.关键词
协青早B//协青早B/东乡野生稻BC1F9群体/低磷耐性/生理机制分类
农业科技引用本文复制引用
陈小荣,陈明,贺浩华,朱昌兰,彭小松,贺晓鹏,傅军如,欧阳林娟..协青早B//协青早B/东乡野生稻BC1F9群体低磷耐性鉴定及其生理机制[J].应用生态学报,2011,22(5):1169-1174,6.基金项目
江西省重大科技创新项目资助. （）
