摘要
开展了大花蕙兰F1代‘169-2’、‘192-1’、‘171-12’及其父母本的核型研究。结果表明:‘169-2’与母本‘马州立卡’(‘C.Majolika’)均属2B型,且其核不对称系数与母本十分接近;‘192-1’与父本‘红颜’(‘C.Popini’)同属2C型,其核不对称系数高于亲本;‘171-12’核型为2C型,不同于亲本的2B型,其核不对称系数比亲本高。当亲本一方为三倍体时,F_1代核型与亲本有较大差异。
The chromosome number and karyotype of Hybrid F1 Generation ‘ 169-2＇, ‘ 192-1＇, ‘ 171-12＇ and their parental varieties were analyzed. The results showed that the ‘169-2＇ and the female parent（C. Majolika）belonged to the 2 B type of chromosome, and the karyo type approximation coefficient of ‘169-2＇ was very close to the female parent. The ‘192-1＇ and the male parent（C. Popini） belonged to the 2 C type, and the index of karyotypic asymmetry（As.k） of ‘192-1＇ was higher than its parents. The karyotype of ‘171-12＇ belonged to the2 C type, different from its parent, which both belonged to the 2 B type, and As.k was higher that its parent. This study revealed the karyotype of F_1 generation would be different from its parent when one of its parent was triploid.
出处
《热带作物学报》
CSCD
北大核心
2017年第10期1861-1867,共7页
Chinese Journal of Tropical Crops
基金
四川省省级公益性科研单位基本科研业务费专项资金项目(No.2016YSKY0034)
"大花蕙兰后代资源保存与杂交亲本
后代核型分析研究"
四川省科技计划项目(No.2016TJPT0001)"四川省植物资源共享平台"
关键词
大花蕙兰
种间杂交
F1代
核型分析
Cymbidium hybridum
interspecific cross
hybrid F1 generation
analysis of karyotype
