论文部分内容阅读
用早熟３号／特矮大麦、早熟３号／９１－６４１１、早熟３号／浙皮１号和９１－６４１１／特矮大麦４个组合的Ｐ１、Ｐ２、Ｆ１、Ｆ２、Ｂ１和Ｂ２６个世代的试验资料，探讨了４个组合株高和基部节间长度的遗传特点。结果表明，早熟３号／特矮大麦和９１－６４１１／特矮大麦的株高表现明显的超显性，分离世代中高秆、矮秆呈双峰分布，株高的遗传符合一对基因的分离模式，高秆为显性。早熟３号／特矮大麦基部倒四、五节间长度的表现和遗传特点与株高一致。早熟３号／浙皮１号和早熟３号／９１－６４１１中株高呈数量性状遗传特点，加性基因效应极为重要，加性×显性互作效应达显著和极显著水平，早熟３号／９１－６４１１中还存在极显著的显性效应。早熟３号／９１－６４１１的倒四、五节间长也为数量性状，但加性、显性和上位基因效应在不同节间长度的遗传中所占重要性不同。
The F1, P2, F1, F2, B1 and B26 generations with four combinations of early maturity 3 / special short barley, early maturing 3 / 91-6411, early maturing 3 / Zhebian 1 and 91-6411 / Of the experimental data to explore the four combinations of plant height and basal internode length of the genetic characteristics. The results showed that the plant height of early maturity 3 / special short barley and 91-6411 / special short barley was obviously over dominant. The segregation of middle-high stalk and dwarf was bimodal in the segregating generations, and the inheritance of plant height was consistent with the segregation of a pair of genes Mode, tall stalks for the dominant. Early maturing 3 / special short barley base four or five length of the performance and genetic characteristics consistent with the plant height. Early maturity 3 / Zhebai 1 and early maturity 3 / 91-6411 in the number of plant height genetic characteristics, additive gene effect is extremely important, additive × dominant interaction effect was significant and highly significant level, precocious 3 / 91-6411 there is still a very significant dominance effect. The length of four and five nodes of early maturity 3 / 91-6411 were also quantitative characters, but the additive, dominant and epistatic effects were of different importance in the inheritance of different internode length.