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两广茶区10个茶树品种染色体数目研究
李斌; 陈国本; 贺利雄; 张文滟; 黄国安;   
华南农业大学食品科学系!广东广州510642
摘要:
采用植物染色体去壁、低渗、火焰干燥制片技术,分析了两广茶区10个茶树品种染色体数目。结果表明,这10个茶树品种均为二倍体(2n=2x=30);但在广东平远锅 品种中发现3个三倍体细胞;在广东连南大叶种中发现1个单倍体细胞;在清远笔架茶等6个茶树品种中均发现染色体数少于30条的细胞。研究结果说明,茶树染色体基数具有高度的稳定性,极端气候条件的变化,很可能是导致染色体出现整倍性或非整倍性变异的原因。
关键词:  茶树  染色体数目  广东和广西  
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