油研９号系贵州省油料科学研究所用黄籽双低不育系 ２７１ ６Ａ和黄籽双低恢复系５８６２配制的黄籽双低杂交优质新组合，其中２７ １６Ａ是以隐性核不育材料１１７Ａ为母本，黄籽双低常规品种材料７３７为父本杂交转育成功的不育系；５８６２是双低常规品种，６００３为母本， Yanyan 9 is a high-quality new combination of yellow-yellow double-low hybrids prepared by Guizhou Yellow River Double Low Fertility Line 271 6A and Yellow Seed Restorer Line 5862. Among them, 27 16A is a recessive genic male sterile material 117A was the female parent, and the yellow-yellow double-low conventional variety 737 was a male sterile line that had successfully crossed with the male parent; 5862 was a double-low conventional variety and 6003 was a female parent,