Breeding an Aromatic,High-quality,High-yield Hybrid Rice Yexiangyou 669
[Objective]An aromatic,high-quality,high-yield,disease-resistant rice variety was bred.[Method]Utilizing the genetic diversity and complementing agronomic traits between the male parent,Fuhui 669 with high yield and combining ability,and the female parent,the fragrant,high-quality,disease-resistant sterile line Yexiang A,a new breed of rice were generated.The hybrid was subjected to multiple ecological resistance identification,a quality analysis after high temperature maturation,and years of multi-point comparison test prior to final selection.[Result]The high-quality,high-yield,disease-resistant Yexiangyou 669 of a desirable plant type was obtained and submitted to the regional trial for mid-season rice in Fujian from 2019 to 2020.In the 2-year trial,it showed an average growth period of 139.8 d,which was 1.1 d shorter than the reference cultivar,Ⅱ You 3301,and an average yield of 9363 kg·hm-2,which was 2.24%higher than control but not statistically significant.It exhibited resistance to rice blast and up to the national Grade A quality.In 2021,it was certified by the Fujian Provincial Crop Approval Committee as the Min Approved Rice No.20210014.Yexiangyou 669 had inherited 6 desirable genes from one parent and 16 common to both parents.[Conclusion]The new hybrid rice Yexiangyou 669 had high yield,strong disease resistance,and superb grain quality and was promoted as one of the main varieties in the province.
万方数据
维普
