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杨属派间核型比较研究
陈成彬;张守攻;李秀兰;韩素英;宋文芹;齐力旺
1.南开大学生命科学学院;2.中国林科院林业研究所细胞生物学实验室;3.中国林科院林业研究所细胞生物学实验室 天津300071;4.北京100091;5.天津300071
摘要:
对杨属五派代表种的核型进行了分析,各代表种核型公式如下:欧洲山杨(白杨派)2n=2x=38=21m(2SAT)+4sm+13st(1SAT);小叶杨(青杨派)2n=2x=38=1M+26m(1SAT)+8sm(1SAT)+1st+2t(1SAT);大叶杨(大叶杨派)2n=2x=38=2M+22m+8sm+6st;胡杨(胡杨派)2n=2x=38=2M+23m+3sm+10st(2SAT);箭杆杨(黑杨派)2n=2x=38=3M+29m(2SAT)+5sm+1st。杨属派间核型差异主要表现在中部与次中部着丝点(M,m)和近端部与端部着丝点(st,t)染色体数目上。白杨派和胡杨派具较多的st、t染色...
关键词:  白杨派    青杨派    大叶杨派    胡杨派    黑杨派    核型比较
DOI:
分类号:
Fund project:国家“973”项目“树木育种的分子基础研究”(G19990160);; 国家林业局“948”项目“国外白杨和胡杨新品种及抗干旱基因与转化技术引进”(9840402);; 山西省自然科学基金项目资助
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