Position: Home > Articles > PRELIMINARY REPORT ON THE CHROMOSOME NUMBER AND KARYOTYPE OF VARIETY RESOURCES OF Ginkgo biloba IN CHINA
Journal of Huazhong Agricultural University
1996
(6)
中国银杏品种资源染色体数目及核型研究初报
作 者：
陈学森;邓秀新;章文才;张艳敏
单 位：
华中农业大学作物遗传改良国家重点实验室,山东省林业学校;华中农业大学作物遗传改良国家重点实验室
关键词：
银杏；品种资源；染色体；核型
摘 要：
采用压片法对我国银杏属雌株５大类型５０个品种的染色体数目进行了观察，并对５个类型的代表品种核型进行了研究。结果表明，所观察的５０个品种全部为二倍体，人工诱变也未获得有价值的多倍体；５个代表品种的核型一致，均为２ｎ＝２ｘ＝２４＝４ｍ＋８ｓｍ＋１２ｓｔ，相对长度在１４．７５％～６．６５％之间，最长染色体与最短染色体之比均大于２，属较不对称的３Ｂ型
译 名：
PRELIMINARY REPORT ON THE CHROMOSOME NUMBER AND KARYOTYPE OF VARIETY RESOURCES OF Ginkgo biloba IN CHINA
作 者：
Chen Xuesen;Deng Xiuxin;Zhang Wencai;Zhang Yanmin(Huazhong Agricultural University, Wuhan 430070;Shandong Forestry School,Taian 271000)
关键词：
Ginkgo biloba, variety resources,chromosme number, karyotype
摘 要：
Chromosome numbers of 50 varieties and karyotypes of 5 types of Ginkgo biloba in China were studied in order to get basic information about the inheritance, variance,evolution and variety character of Ginkgo biloba.The results showed that all of the 50 observed varieties are diploids. The karyotypes of the 5 main varieties are identical:they are 2n=2x=24 =4m+8sm+12st. Research data verified that the chromcome number and morphology of Ginkgo biloba do not change in its evolution and have strong genetic stability.
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