Analysis of High and Stable Yield Performance and Genetic Characteristics of New Wheat Variety Zhengmai9188
Based on the data collected from the 2-year regional test and 1-year production test of China Seed Industry Group in the south of Huanghuai region,the characteristics of high and stable yield of Zhengmai9188 and the relationship between the three factors of yield and yield were analyzed.The results showed that the average yield of Zhengmai9188 was 7 797.0 kg/hm2,which was 5.95％higher than that of Zhoumai18.The average high stability coefficient(87.2％)of regional test and production test was about 4.5 percentage points higher than that of control.The correlation coefficients between the three factors of yield and yield were effective panicle(0.438)＞grain number per panicle(0.352)＞thousand-grain weight(0.322).The direct path coefficient of effective panicle number(0.470)＞1 000-grain weight(0.374)＞grain number per spike(0.247),and the indirect path coefficient of panicle number on grain yield through effective panicle number and 1 000-grain weight were positive(0.062 and 0.043).Based on the marker detection results of Zhengmai9188 and its parents,the impor-tant agronomic trait gene loci in Zhengmai9188 were analyzed.The results show that Zheng9188 polymerized 7 anti-stripe rust QTL loci(QYrsn.nwafu-1BL,Yr29,QYrxn.nwafu-1BL,QYrqin.nwafu-2AL,QYr.nwafu-3BS,QYr.nwafu-4BL,Qyrq.NwafU-6BS),2 anti-leaf rust groups Because of(Lr13 and Lr67),three high grain weight QTL sites(Tabas1,TaGS5-A1,TaGW2-6A),the molecular marker detection results could partially explain the excellent resistance of Zhengmai 9188 stripe rust and leaf rust and the high 1 000-grain weight of Zhengmai9188.
Zhengmai9188high yieldstable yieldthree factors of yield
万方数据
维普
