优质高产杂交稻新品种秱两优6073的选育与应用

    Breeding and Application of the New Hybrid Rice Variety Tongliangyou 6073 with High Quality and High Yield

    • 摘要: 杂交水稻育种的关键在于创制优良的不育系与恢复系,并通过合理配组,选育出在产量、抗性及品质等方面具有综合优势的杂交组合。以抗稻瘟病恢复系福恢6073为父本,与米质优良、农艺性状协调的两系不育系秱S配组,成功培育出杂交稻新品种秱两优6073。该品种综合性状优良,具体表现为株型理想、抗倒性强、食味品质佳,稻米品质达到部颁二等优质米标准全生育期为128.6 d,较对照品种丰两优四号早熟3.9 d,丰产性稳定,两年区域试验平均产量9 562.50 kg·hm−2,较对照丰两优四号增产4.97%;在抗性方面,对稻瘟病表现为中感,但整体抗性水平优于对照。综上所述,秱两优6073是一个集高产、优质与广适性于一体的杂交稻新品种,适宜在长江中下游一季中稻区推广种植,具备良好的应用前景。

       

      Abstract: The key to hybrid rice breeding lies in the creation of excellent sterile lines and restorer lines, and through reasonable crossbreeding, selecting hybrid combinations that have comprehensive advantages in terms of yield, resistance, and quality. This study used the blast-resistant restorer line Fuhui 6073 as the male parent and a two-line sterile line Tong S with excellent rice quality and coordinated agronomic traits to successfully breed the new hybrid rice variety Tongliangyou 6073. This variety has excellent comprehensive traits, specifically manifested in its ideal plant type, strong lodging resistance, and excellent eating quality, meeting the national standard for Grade II high-quality rice. In terms of resistance, it shows moderate susceptibility to rice blast, but its overall resistance level is better than the control. Its entire growth period is 128.6 days, which is 3.9 days earlier than the control variety. It has stable high yield, with an average yield increase of 4.97% in two years of regional trials. In conclusion, Tongliangyou 6073 is a hybrid rice variety that combines high yield, excellent quality, and broad adaptability. It is suitable for promotion and cultivation in the one-season rice areas of the middle and lower Yangtze River region and has good application prospects.

       

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