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(一)四倍体葡萄的发生与品种的发展巨峰和先锋之所以称为四倍体,是由于其细胞核中含有的染色体数为普通品种(2倍体)的2倍。现代栽培的葡萄四倍体品种,都是从自然产生的突变体衍化而来的,即在生长过程中,新梢生长点的分裂细胞的染色体数加倍,这样由这部份先端生长而来的就形成四倍体,(称为芽变式枝变)。若将其切下进行扦插,就能得到独立的四倍体。巨峰和先锋的育种是以康拜尔、罗扎基、白玫瑰产生的各种变异四倍体作为起点
(A) the occurrence of tetraploid grapes and varieties of development Kyoho and pioneer is called tetraploids, because the nucleus contains the chromosome number of common varieties (2-fold) 2 times. Modern cultivated grape tetraploid varieties are derived from naturally occurring mutants, that is, in the growth process, the growth of new shoots of dividing chromosomes doubling the number of cells, so from this part of the apex growth The formation of tetraploid, (known as bud mutation). If you cut it cuttings, you can get independent tetraploid. Kyoho and pioneer breeding is based on the tetraploids of various variants produced by the Kangbil, Rozaji, and White Rose as the starting point