论文部分内容阅读
本试验在河南省从北到南4个不同纬度的地点上连续进行2年(共8个环境类型).材料包括7个小麦亲本和由此按不完全双列杂交模式组配、人工去雄授粉产生的12个杂种组合.研究结果,小麦杂种单株籽粒产量平均杂种优势及其变异幅度分别为22.01%、11.90—40.64%.每穗粒数的杂种优势大于千粒重和单株穗数的杂种优势.面团形成时间,面团稳定时间,拉伸仪面积、峰值、延伸度及其拉伸仪峰值与延伸度的比值均呈现正向杂种优势;籽粒蛋白质含量、吸水率、面筋含量和弱化度表现负向杂种优势.但单株籽粒蛋白质产量表现正向杂种优势,平均17.20%.容重表现正向杂种优势,且变异范围较窄.杂种优势的环境变异主要是受地点以及地点、年份和杂种间二级互作的显著影响.
The experiment was carried out in Henan province for 4 consecutive years (totally 8 environmental types) at 4 different latitudes from north to south.The materials included 7 wheat parents and thus were grouped according to the incomplete diallel cross pattern, The results showed that the average heterosis and the variation range of the grain yield of hybrid wheat were 22.01% and 11.90-40.64%, respectively.The heterosis of grains per panicle was greater than the hybrid of 1000-grain weight and panicle per plant The results showed that the ratio of dough forming time, dough stability time, extensometer area, peak value, elongation degree and the ratio of peak value to extension value of the extensometer showed positive heterosis. Grain protein content, water absorption, gluten content and the degree of weakness Negative heterosis.However, the protein yield per plant showed a positive heterosis with an average of 17.20% .The bulk density showed positive heterosis and the variation range was narrow.The environmental variation of heterosis was mainly affected by the location and location, the year and the inter-hybrid Significant impact of secondary interaction.