棉花育种基础理论讲座(三)
文献类型: 中文期刊
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期刊名称:中国棉花
ISSN: 1000-632X
年卷期: 1984 年 05 期
页码: 45-47+43
摘要: 第三讲非整倍体、代换系和添加系棉花的染色体数目和结构正像其他自然界的每一种生物一样是相对稳定的。棉属种分两类,一类为二倍体,有13对染色体;一类为异源四倍体(或双二倍体)有26对染色体。这两类种的染色体分成相同的两组,每组内各个染色体的大小、形态特征和功能都不相同,通过分裂复制其自身,然后分配到
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