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- W1023166594 abstract "白菜型油菜与海甘蓝属间杂种F1代染色体数目早期为2n=55。经多代组培无性繁殖后,杂种染色体大量减少,数目变化于25~28条间,平均为26条。杂种PMC减数分裂中,平均配对构型为0.06Ⅲ+11.26Ⅱ+3.80Ⅰ,二价体数目变化于8~13之间,以10Ⅱ、11Ⅱ、12Ⅱ的细胞出现频率较高,分别为26.60%,23.91%和30.98%,单价体数目变化于0~8个之间。杂种染色体数目减少,二价体个数较高,这说明海甘蓝染色体在大量丢失的同时,白菜型油菜的染色体组发生了自然加倍。在后期Ⅱ观察到三分体、染色体落后、染色体桥等异常现象。" @default.
- W1023166594 created "2016-06-24" @default.
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- W1023166594 date "2006-01-01" @default.
- W1023166594 modified "2023-09-23" @default.
- W1023166594 title "白菜型油菜(B.Chinensis)与海甘蓝(Crambe abyssinica)属间杂种的细胞学观察" @default.
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