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综合四年的研究结果,初步認为: 1.小麦株高性状,遗传机制頗为复杂,无论控制株高的基因数目或基因作用的方式都有差異,由于所用矮源不同,F_1平均株高分别表现为偏高、超高、中值或偏矮。F_2株高分离分别表现为常态曲线、偏态曲线和多峰曲线。絕大多数组合正、负超亲同时出现。2。F_2平均株高与双亲株高平均值以及F_1株高均有显著的相关性。3.株高与百粒重、抽穗度有极显著的正相关,而与抽穗期則表现为明显的负相关。株高与穗长的相关性因亲本不同或组配方式之異而有差別。株高与每穗小穗数和不孕小穗数相关不显著4.F_2同一组合内株高近似的单株间抽穗度表现为明显分离。5.百粒重随株高降低而减小主要是由于灌浆不足所致,矮化的同时,可能也抑制了干物质的形成。
Based on the results of the four years, the preliminary results are as follows: 1. Wheat plant height traits and genetic mechanisms are quite complex, regardless of the number of genes controlling the plant height or the way of gene action. Because of the different dwarf sources, the average F_1 plant height Respectively showed high, high, median or partial short. F_2 plant height showed normal curve, skewed curve and multi-peaked curve, respectively. The vast majority of positive and negative super-pro-at the same time. 2. The average height of F_2 was significantly correlated with the mean height of parents and the height of F_1. There was a significant positive correlation between plant height and kernel weight and heading degree, but significant negative correlation with heading date. The correlation between plant height and spike length is different due to different parents or different ways of grouping. The correlation between plant height and number of spikelets per spike and number of spikelets was not significant.4 The number of panicles between plants in the same combination of F_2 was significantly segregated. The decrease of 100-grain weight with plant height was mainly due to insufficient grouting, which may also inhibit the formation of dry matter.