枸杞花粉发育进程中花蕾和叶片物质代谢与育性的关系

以宁夏枸杞主栽品种'宁杞1号'的雄性不育株和可育株为研究材料,通过测定它们枝条生长速率,花粉不同发育时期花蕾和叶片的叶绿素、可溶性糖和脯氨酸含量以及硝酸还原酶活性,比较不育株与可育株在发育进程中物质代谢的差异.结果表明:在枸杞花粉发育进程中,不育株枝条生长速率快,花蕾和叶片的叶绿素含量高,而脯氨酸严重缺乏,可溶性糖含量和硝酸还原酶活性低,且各个发育阶段不育株和可育株均存在明显差异.可见,'宁杞1号'不育株物质代谢水平低,缺乏生理活性物质积累,使花粉发育有关基因的表达受到抑制,最终影响了其育性的正常表达.

Relationship between Substance Metabolism in Buds and Leaves and Fertility in Development of Pollen in Lycium barbarum L.

The difference of substance metabolism was studied during the pollen development between male sterile plants and fertile plants of Lycium barbarum L.,including growth rate of branches,chlorophyll content,soluble sugar content,proline content and nitrate reductase activity in buds and leaves during different development period.The results showed that in the whole process of growth,the sterile plants have rapid growth rate,high chlorophyll content,serious lack of proline,low content of soluble sugar and sligh...