K. Yonezawa, Nobuo Tatematsu, P. Spetsov, K. Tsunewaki
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引用次数: 4
摘要
四种黄颡鱼的细胞质效应。squarrosa, Ae。kotschyi, Ae。蛭形蝇和Ae。短句来源以随机获得的460个F3系为材料,对小麦农艺性状的遗传变异进行了研究。这460个F3系是由同型和常浆norin26与常浆norin61杂交组合而成。与在F2种群中观察到的趋势一致(TSUNEWAKI et al. 1985),伊蚊的细胞质。Kotschyi的影响最为显著。10个性状中有7个性状的遗传变异性显著增加,且与F2结果一致。Ae.胞质。球茎的效应次之,扩大了节间、秆和穗的遗传变异。Ae的细胞质效应。沙刺和沙刺;Longissima既不独特,也不可取。主成分分析表明,虽然外源细胞质或多或少地改变了个体性状的遗传变异,但它们都没有实质性地改变性状关联的阶段或结构。与小麦细胞质遗传距离较大的细胞质(TSUNEWAKI 1980)引起了更广泛的影响,这表明新的和理想的核-细胞质相互作用可能发生在相对较远的细胞质基因组和核基因组的组合中,而不是密切相关的基因组。
Increasing genetic variability in common wheat by utilizing alien cytoplasms - effects of four Aegilops cytoplasms on the genetic variability of the F3 generation of the cross, Norin 26 × Norin 61.
Cytoplasmic effects of the four Aegilops species, i.e., Ae.squarrosa, Ae.kotschyi, Ae.speltoides and Ae.longissima, on the genetic variability of agronomic characters of wheat were investi**ated using a total of 460 F3 lines which were randomly derived from the cross combinations of allo- and euplasmic Norin 26 with euplasmic Norin 61. It was observed, coincidently with the trend observed in the F2 populations (TSUNEWAKI et al. 1985), that cytoplasm of Ae.kotschyi caused the most prominent effect. The cytoplasm increased, statistically significantly and/or consistently with the F2 result, the genetic variability of the seven out of ten characters examined. Cytoplasm of Ae.speltoides showed the second most appreciable effect, enlarging the genetic variability of the length of internodes, culm and spike. Cytoplasmic effects of Ae.squarrosa and Ae.longissima were neither distinct nor desirable. The principal component analysis revealed that none of the alien cytoplasms tested substantially modified the phase or structure of character association, though they more or less changed the genetic variability of individual characters. Cytoplasms with a larger genetic distance from wheat cytoplasm (TSUNEWAKI 1980) caused a wider range of effects, suggesting that new and desirable nucleo-cytoplasmic interactions may occur in a combination of relatively distantly related cytoplasmic and nuclear genomes rather than closely related ones.