摘要
对草原1号杂花苜蓿雄性不育系与可育系的花柱与柱头形态结构进行了对比观察研究,结果表明:苜蓿雄性不育系的花柱与柱头的形态结构与可育系有很大差别,不育系花柱细,柱头小且下陷,柱头的毛状体细胞相对少并紧包乳突状细胞,分泌物少.这些形态特征影响着苜蓿雄性不育系受粉和受精,是导致杂交制种结实率低的原因之一.
The morphological structures of style and stigma were compared between male sterile and normal lines of Medicago varia Martin.cv.The results demonstrate great differences between male sterile and normal lines of Medicago varia Martin.cv. on the style and stigma structure.The sterile line has thinner style, smaller and sunken stigma, a fewer ciliashaped cells in stigma and hugging nipple cells, and less secretion. These morphological characteristics affect the process of pollination of the male sterile line.It is one reason for the low rate of seed set in hybridization.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第6期671-673,共3页
Journal of Inner Mongolia University：Natural Science Edition
基金
国家自然科学基金(批准号30160057)
内蒙古农业大学博士科研启动基金(批准号BJ00-7)
农业部草地资源生态重点开放实验室基金(2001-2)
关键词
草原1号杂花苜蓿
雄性不育系
花柱
柱头
形态结构
Medicago varia Martin.cv.Caoyuan No.1
male sterile line
style
stigma
morphological structure
