摘要
以龙眼石硖品种为材料,采用改良涂片法对花粉母细胞减数分裂过程进行了系统观察。结果表明,(1)龙眼减数分裂进程与花蕾大小,花药颜色有密切关系,在同一花蕾甚至同一花药中表现不同步性。(2)龙眼减数分裂染色体行为存在染色体片段、落后染色体、染色体桥、分裂不同步、微核及多分体等异常现象,从细胞遗传学水平上分析了龙眼花粉母细胞减数分裂异常的原因。为龙眼细胞遗传学的深入研究和品种改良提供了科学依据。
The developed smearing method was adopted to observe the meiosis process of pollen mother cell（PMC）of Shixia longan（Dimocarpus longan Lour.cv.Shixia）in this article.The results showed that：（1）.The meiosis process of longan pollen mother cells were closely correlated with the bud size and the anther color,and the difference in the stages of meiosis existed in the same bud and anther.（2）.There were a series of abnormal phenomena in meiotic division of pollen mother cells such as chromosome fragments,lagging chromosomes,chromosome bridges,asynchronization of chromosomes segregation,micronucleus,deviant tetra and so on.The reason of abnormal phenomena in meiosis of pollen mother cells was analyzed on cytogenetics levels.This research aimed to provide scientific evidence for cytogenetics and breeding of longan varieties.
出处
《果树学报》
CAS
CSCD
北大核心
2011年第5期820-824,共5页
Journal of Fruit Science
基金
中央级公益性科研院所基本科研业务费专项(1251022011006)
农业部非盈利性科研机构改革专项启动费(sscriqd201005)
现代农业产业技术体系建设专项资金(CARS-33)
关键词
龙眼
花粉母细胞
减数分裂
染色体
Dimocarpus longan Lour.
Pollen mother cell
Meiosis
Chromosome
作者简介
刘丽琴，女，助理研究员，硕士。Tel：0759—2859112．E—mail：lolitallq@163．com
通讯作者。Author for correspondence．Tel：0759—2859112，E—mail：ssy7299@163．com
