抗逆、高产玉米杂交种成单16的稳定性分析

Stability Analysis of Hybrid Maize Chengdan 16 with Adverse Resistance and High Yield Potential

成单１６系四川省农科院作物所育成，是近五年来同组区试中最高产的新审定品种。从四川玉米多生态产区的实际出发，亟需丰产性、适应性兼备的优良杂交种。本文以两年四川省区试资料用Ｅｂｅｒｈａｒｔ法和Ｔａｉ法对成单１６进行稳定性分析，两种分析方法结果趋于一致，稳定性参数均接近于稳产品种的理论值，Ｇ×Ｅ互作效应主要表现为线性关系，具有较好的平均稳定性。稳定性分析与区试、生产示范的实际情况吻合，充分表明成单１６产量高，稳定性好，尤以耐旱性状突出，符合主推种性状要求。

hengdan 16 developed by Crop Research Institute,Sichuan Academy of Agricultural Sciences was a newly released maize hybrid combination,which was the highest yield combination in the same group of regional trial in recent 5 years.Maize grows in multiple ecological environments in Sichuan Province. Therefore,maize production needs elite hybrids with high yield potential and wide adaptiveness.This paper analyzed the stability of Chengdan 16 with Eberhart's and Tai's methods on the basis of 2 year's data in Sichuan Provincial Maize Regional Trials.Results showed that similar results were abtained with both analysis methods, the stability parameters were close to that of the theoretical values of a stable variety,G × E interaction effects mainly showed linear relation,which meant a better average stability.The results of stability analysis were coincident with that of regional trials and productive demonstration,indicating that Chengdan 16 was characterized by high yield and stability,especially outstanding drought tolerance,which suggested that this combination could meet the need of a staple variety.