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。
By using wall degradation hydration flame drying method of preparing chromosomesamples in plants, chromosome numbers of 10 tea varieties in Guangxi and Guangdong were analyzed. The results showed that all of the varieties were diploid (2n=2x =30), but in Pin Yun GuoDu variety, 3 triploid cells were found and in Liannan Da Ye variety a haploid cell was observed.Aneuploid cells with chromosome numbers less than 30 were discovered in 6 varieties. The studyproved that the basic chromosome numbber was very stable and extreme climate might be the inducing reason for the euploid and aneuploid.
出处
《广西植物》
CAS
CSCD
北大核心
1999年第3期233-235,共3页
Guihaia
关键词
茶树
染色体数目
广东和广西
Tea variety, chromosome number
Guangxi and Guangdong
