期刊论文

ANALYSIS OF CYTOLOGICAL MORPHOLOGICAL CHARACTERISTICS FROM CHROMATIN TO CHROMOSOME IN RAPESEED

中文

上海农业学报

1000-3924

1991

1

29-32

本校为第一机构

本文以甘蓝型油菜(Brassica napus L.)的三个品种为材料研究了从染色质到染色体的细胞学形态特征,甘蓝型油菜在细胞分裂间期的染色质存在的状态,就大体结构而言多数呈颗粒状,一般数目湘农油二号为30±5,湘油5号为31±6,甘油5号为29±8,这些颗粒由异染色质组成,颗粒均匀分布,类似于球形前染色体型。此外,甘蓝型油菜从染色质到形成染色体有形态变化,即由拉长的颗粒逐渐形成染色体,观察到在颗粒的一边或两边出现细线,起初短、细而色淡,然后加长加粗而成为具有个体性可以辨认的一条条染色体,同时在染色体上出现深浅不同的纵向结构,细胞核内染色很深的颗粒消失。在有的线状染色体末端可以见到松开的相...

The cytological morphological characteristics from chromatin to chromosome in three cultivars of B. napus L. were studied by the author. The structure of chromatins appearing interphase nucleus in B. napus L. was observed. These chromatins appeared to be roughly granules of different sizes. Their average number per nucleus was 30±5 for Xiang Long You no. 2, 31±6 for Xiang Long You no. 5, and 29±8 for Gang You no. 5. These granules were composed of heterochromatins and were evenly distributed. They were similar to globular pre-chromosome type...