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一、核质互作和核质杂种优势的表现 自从日本著名遗传学家木原均(1951)提出研究小麦亚族(Tniticinae)细胞质遗传以来,经过连续回交置换,许多不同种的细胞质被引入到小麦中来(Fukasawa,1953;Wilson and Ross,1962;Maan 1973;kihana,1973;panayotovand Gotsov,1975;Tsunewaki et,al,1976)。木原均首先将这种由连续回交获得的置换系称为核质杂种(简称Nc杂种)。根据一些研究已经阐明,(1)由于核质互作可导致异源细胞质引起新表型的出现;(2)异源细胞质的表型效应可以稳定地遗传下去;(3)在小麦亚族中存在着广泛的细胞质遗传变异。
I. THE PERFORMANCE OF NUCLEAR MATTER AND NUCLEOTINA DISEASE Since the well-known Japanese geneticist Mikoto (1951) proposed to study the cytoplasmic inheritance of Tniticinae, many different types of cytoplasm have been introduced after successive backcross substitution Wheat (Fukasawa, 1953; Wilson and Ross, 1962; Maan 1973; kihana, 1973; panayotovand Gotsov, 1975; Tsunewaki et al, 1976). Kikuhara will first be replaced by a series of successive backcross called nuclear hybrids (referred to as Nc hybrids). According to some studies, it has been clarified that (1) the appearance of a new phenotype caused by heterologous cytoplasm due to nuclear-cytoplasmic interaction; (2) the phenotypic effect of heterologous cytoplasm can be inherited stably; (3) in the wheat subfamily There is a wide range of cytoplasmic genetic variation.