油菜籽粒中钾素积累过程的初步研究  

Study of potassium accumulation in seeds of rapeseed

作　　者：孙家刚[1] 左青松[1] 石剑飞[1] 冷锁虎[1] 董召娣[1] 孙统庆[1] 

机构地区：[1]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009

出　　处：《中国油料作物学报》2007年第4期448-451,共4页Chinese Journal of Oil Crop Sciences

基　　金：江苏省农机三项工程项目(NJ2006-43);江苏省作物栽培生理重点实验室开放课题(K04006)

摘　　要：通过定期测定甘蓝型双低油菜扬油6号籽粒的钾素含量，研究了籽粒中钾素积累动态，结果表明；（1）籽粒含钾率前期较高，随着籽粒的充实逐渐减小。（2）籽粒中钾素积累动态可用Richards方程拟合（R^2=0．9963^＊＊～0．9981^＊＊）。（3）前期钾素积累的持续时间最长，约占55％；中期钾素积累速率最大，积累量最大，所占比例也最大，均在50％以上，前期积累比例略少于40％，后期13％左右。（4）施用钾肥籽粒钾素积累时间和最终积累量有所增加，但总体影响不大。The trials were carried out in 2005-2006 to investigate the K accumulation of seed by measuring the K content in seed of rapeseed cultivar Yangyou No. 6 （Brassica napus L. ） under three K levels. The main results were as follows. （1） The K content of seed was the highest at former stage of seed filling, then decreased gradually as the growing of seeds. （2） The Richards equation could be used to describe the process of K accumulation in seeds （R^2=0. 996 3^＊＊-0. 998 1^＊＊）. （3） The time of early stage was longest among three stages in all treatments, and the ratio contributing to the whole time of K accumulation was about 55%. The rate and amount of K accumulation were highest in middle stage. The ratio of amount of K accumulation at middle stage was above 50%,and at early stage,late stage was about 40%, 13%, respectively. （4） The whole time and total amount of K accumulation increased as the increasing of K application,but effect was not significant.

关 键 词：油菜 籽粒 钾素积累 RICHARDS方程 

分 类 号：S565.401[农业科学—作物学]