芥蓝与诸葛菜属间杂种的减数分裂观察  

MEIOTIC OBSERVAIONS ON INTERGENERIC HYBRIDS FROM BRASSICA ALBOGLABRA AND ORYCHOPHRAGMUS VIOLACIEUS

作　　者：殷家明[1] 罗鹏[1] 蓝泽蘧[1] 

机构地区：[1]四川大学生物系

出　　处：《四川大学学报（自然科学版）》1999年第1期136-139,共4页Journal of Sichuan University(Natural Science Edition)

摘　　要：对芥蓝与诸葛菜属间杂种的减数分裂进行了观察．在杂种中期Ⅰ的花粉母细胞中，染色体数目稳定为２１，有５种染色体配对构型，二价体数变化为０～３．由杂种的平均配对构型为１８．８４Ⅰ＋１．０４Ⅱ＋０．０３Ⅲ表明，杂种染色体配对程度很低．由于芥蓝和诸葛菜染色体组内都有部分同源性。Observations were made on meiosis of intergeneric hybrids from Brassica alboglabra×Orychophragmus violaceus .At metaphase Ⅰ,chromososme number was invariably 2n=21 and 5 pairing configurations with the number of bivalents ranging from o to 3 were found in PMCs of the hybrids.Chromosome pairing of the hybrids was averaged as 18.84Ⅰ+1.04Ⅱ+0.03Ⅲ,which indicated that the degree of pairing was low.As homoeology was detected within genomes of both B.alboglabra and O. violaceus, it was inferred that the degree of homoeology between the genome of B. alboglabra and that of O.violaceus was extremely low.

关 键 词：芥蓝 诸葛菜 属间杂种 减数分裂 染色体 

分 类 号：S565.035.1[农业科学—作物学] S634.03