早籼两系杂交水稻新品种聚两优919丰产稳产性分析与综合评价

Analysis on Productivity,Stability and Comprehensive Evaluation of New Early Indica Two-line Hybrid Rice Variety Juliangyou 919

利用2017—2019年福建省早稻新品种区域试验和生产试验数据,通过变异系数、高稳系数和适应度等分析方法,研究聚两优919的丰产性、稳产性、适应性和综合表现。结果表明,聚两优919在2017—2018年2年区域试验平均产量为7771.13 kg/hm^(2),比对照品种T78优2155增产3.74%。2019年生产试验平均产量为6998.55 kg/hm^(2),比对照品种T78优2155增产4.00%。2年区域试验平均变异系数为13.85%,低于对照品种T78优2155(14.38%);平均高稳系数为81.25%,高于对照品种(77.84%);平均适应度为68.9%,明显高于对照品种(41.7%)。全生育期2年区域试验平均128.3 d,比对照品种T78优2155早熟0.6 d,中抗稻瘟病,米质达部颁三等优质食用稻品种品质标准。由此说明,聚两优919丰产性、稳产性和适应性好,抗病性、稻米品质和主要农艺性状等综合性状优良,适宜福建省作早稻种植,推广应用前景良好。

Based on the regional test and production test data of new early rice varieties in Fujian Province from 2017 to 2019,the productivity,stability,adaptability and comprehensive performance of Juliangyou 919 were studied by analytical methods of coefficient of variation,high stability coefficient and fitness.The results showed that the average yield of Juliangyou 919 in the two-year regional test from 2017 to 2018 was 7771.13 kg/hm^(2),which was 3.74%higher than that of the control variety T78 you 2155.The average yield of production test in 2019 was 6998.55 kg/hm^(2),which was 4.00%higher than that of the control variety T78 you 2155.The average coefficient of variation of two-year regional test was 13.85%,which was lower than that of the control variety T78 you 2155(14.38%);the average high stability coefficient was 81.25%,which was higher than that of the control variety(77.84%);the average fitness was 68.9%,which was significantly higher than that of the control variety(41.7%).The average whole growth period of 2 years regional test was 128.3 days, which was 0.6 days earlier than the control variety T78 you 2155. It was moderately resistant to rice blast and the rice quality reached the quality standard of the third class high-quality edible rice variety issued by the Ministry. It showed that Juliangyou 919 had good high yield, stable yield and adaptability, excellent disease resistance, rice quality and main agronomic characters. It was suitable for early rice planting in Fujian Province and had a good prospect of popularization and application.