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对4种三倍体杨树核型进行了比较分析,三倍体毛白杨核型为:2n=3x=57=1M+31m+10sm+15st;三倍体I-214为:2n=3x=57=2M+33m(2SAT)+10sm(1SAT)+10st(3SAT)+2t;三倍体武黑1号为:2n=3x=57=2M+38m(4SAT)+14sm(2SAT)+3st;三倍体廊坊3号为:2n=3x=57=35m+10sm(1SAT)+10st(2SAT)+2t(1SAT)。结果显示三倍体毛白杨核型与三倍体黑杨核型有显著不同,表明它们的基因组结构不同,起源各异。
The karyotypes of four triploid poplars were compared and analyzed. The karyotype of Populus tomentosa was: 2n = 3x = 57 = 1M + 31m + 10sm + 15st; Triploid I-214 was 2n = 3x = 57 = 2M + 33m (2SAT) + 10sm (1SAT) + 10st (3SAT) + 2t; triploid WuHai 1 is: 2n = 3x = 57 = 2M + 38m (4SAT) + 14sm (2SAT) + 3st; Ploidy Langfang 3 is: 2n = 3x = 57 = 35m + 10sm (1SAT) + 10st (2SAT) + 2t (1SAT). The results showed that the karyotypes of Triploid populus tomentosa and Triploid poplar were significantly different, indicating that they have different genomic structures and different origins.