甘蓝型油菜萝卜胞质不育系恢复材料TC_1的研究  

A STUDY ON RESTORING TC_1 OF BRASSICA NAPUS OGUCMS

作　　者：秦金红[1] 高辉[1] 袁旭[1] 吴俊[1] 杨凡[1] 李旭锋[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2000年第S1期33-37,共5页Journal of Sichuan University(Natural Science Edition)

摘　　要：以F2 (TC1)与甘蓝型油菜萝卜胞质不育系测交后代可育株TC1”为实验材料 ,研究了测交后代的性状特征及其后代的分离情况和花粉母细胞减数分裂行为 .结果表明 :TC1”的外形特征与甘蓝型油菜类似 ,但其后代分离情况较复杂 ,主要表现在花色及育性上 .TC1”的花粉母细胞减数分裂行为异常 ,终变期及中期Ⅰ染色体配对行为比较紊乱 ,单价体及多价体的存在频率较高 .在中期Ⅰ及后期Ⅰ有落后染色体及染色体桥存在 .后期Ⅱ有异常二极分裂现象 .在其四分体时期出现了异常孢子 ,二分体所占比例最高 ,三分体次之 ,而四分体所占比例最低 .This thesis was studied on the morphology and the meiosis behavior of restoring TC 1' which was test crossed between F 2(TC 1) and Brassica napus OguCMS. The results showed that the morphology of TC 1' was similar to that of Brassica napus. But the progenies of TC 1'were segregated seriously, mainly in flower color and fertility. The meiosis behaviors of TC 1'were abnormal. The chromosomal pair in metaphase and anaphase Ⅰ was i...

关 键 词：甘蓝型油菜 萝卜胞质不育 减数分裂 

分 类 号：Q942.5[生物学—植物学]