Developing Elite Rice ZH381 and ZLY381 by Pyramiding badh2, Pi2, and Wxb

The enhancement of rice yield, quality, and disease resistance plays a crucial role in determining food security. However, there is often a negative correlation among these traits. This study developed elite restorer line Zhonghui381 (ZH381) and two-line hybrid rice Zhongliangyou381 (ZLY381). ZH381 is a restorer line selected from F7 obtained by crossbreeding Yuenongsimiao (YNSM) and Jiuxiangzhan (JXZ). ZLY381 is a two-line hybrid rice obtained by crossbreeding Z767S and ZH381. The Kompetitive Allele Specific PCR (KASP) shows ZH381 contains badh2, Pi2, and Wxb. ZLY381 exhibits excellent traits of high yield, high quality, and resistance to rice blast disease in some areas. This study has developed variety has higher yield and high disease resistance, which helps address food security.