National Institute of Animal Science, Animal Physiology and Biochemistry, Foulum, P.O. Box 39, DK-8830, Tjele, Denmark.
Theor Appl Genet. 1995 Jul;91(2):346-52. doi: 10.1007/BF00220898.
Genetic variation based on isozymes was studied in 43 landraces and cultivars of Brassica campestris from China, 4 cultivars of B. campestris from Sweden and 1 from India, and 5 cultivars of B. oleracea from Sweden and 1 from China (B. alboglabra). A total of 17 isozyme loci was studied, 10 of these were polymorphic in B. campestris and 6 were polymorphic in B. oleracea. The level of heterozygosity seemed to be reduced in the Swedish cultivars compared to the Chinese landraces and cultivars of B. campestris. The level of heterozygosity in B. oleracea was even lower than that in the Swedish cultivars of B. campestris. A phylogeny of the cultivars and landraces of B. campestris showed that the B. campestris var 'yellow sarson' cultivar, originating from India, deviated significantly from the other cultivars of B. campestris. A phylogeny of the cultivars of B. oleracea confirmed the expectations that the cultivar B. alboglabra was not closely related to the cultivated forms of B. oleracea.
基于同工酶的遗传变异研究了来自中国的 43 个白菜地方品种和品种、来自瑞典的 4 个白菜品种和 1 个来自印度的品种，以及来自瑞典的 5 个甘蓝品种和 1 个来自中国的（B. alboglabra）品种。共研究了 17 个同工酶基因座，其中 10 个在白菜中是多态的，6 个在甘蓝中是多态的。与中国的白菜地方品种和品种相比，瑞典品种的杂合度水平似乎降低了。甘蓝的杂合度水平甚至低于瑞典的白菜品种。白菜品种和地方品种的系统发育表明，来自印度的白菜品种“黄芥菜”与其他白菜品种有很大的差异。甘蓝品种的系统发育证实了这样的预期，即 B. alboglabra 品种与甘蓝的栽培品种没有密切关系。
