野豌豆属4个品种(系)的染色体核型

Karyotypes analysis of four varieties(lines) of Vicia

对野豌豆属(Vicia)4个不同品种(系)的根尖细胞有丝分裂中期染色体进行数目统计及核型分析。结果显示,4个品种(系)的染色体数目相同,均为2n=2x=12;但核型公式和核型类型各不相同,春箭筈豌豆品种"兰箭3号"(Vicia sativa Lanjian No.3)和狭叶野豌豆品种333/A(V.angustifolia333/A)的核型公式分别为2n=2x=8m+2sm+2st和2n=2x=2m+8sm(2SAT)+2st,春箭筈豌豆品系2556、2560的核型公式均为2n=2x=10m+2sm;兰箭3号和品系2556的核型类型均为"2B",品系2560的核型类型为"1B",而品种333/A的核型类型为"3B"。表明不同品种(系)春箭筈豌豆之间具有染色体遗传多样性。

The chromosome numbers and karyotypes of four varieties（lines） of Vicia were studied by the root tip cells.The results indicated that the chromosome numbers of all four varieties（lines） were the same,2n=2x=12.The karyotype formulas of V.sativa Lanjian No.3 and V.angustifolia 333/A were 2n=2x=8m＋2sm＋2st and 2n=2x=2m＋8sm（2 SAT）＋2st,respectively,while V.sativa 2556 and V.sativa 2560 were the same with 2n=2x=10m＋2sm.The karyotype of Lanjian No.3 and 2556 were 2B types,while 2560 with 1B type and 333/A with 3B type.These results demonstrated that some genetic differentiations were existed among different varieties（lines） of V.sativa.