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Pyramiding Breeding of Low-Glutelin-Content Indica Rice with Good Quality and Resistance

文献类型： 外文期刊

作者： Chen, Da-Gang 1 ; Guo, Jie 1 ; Chen, Ke 1 ; Ye, Chan-Juan 1 ; Liu, Juan 1 ; Chen, You-Ding 1 ; Zhou, Xin-Qiao 1 ; Liu, Chuan-Guang 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

2.Coconstruct Minist & Prov, Key Lab Genet & Breeding High Qual Rice Southern C, Guangzhou 510640, Peoples R China

3.Minist Agr & Rural Affairs, Guangdong Key Lab New Technol Rice Breeding, Guangzhou 510640, Peoples R China

4.Guangdong Rice Engn Lab, Guangzhou 510640, Peoples R China

关键词： low-glutelin-content; resistance; good quality; indica rice; pyramiding breeding

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 21 期

页码：

收录情况： SCI

摘要： Low-glutelin-content rice, a type of functional rice with glutelin levels below 4%, is an essential dietary supplement for chronic kidney disease (CKD) patients. Developing low-glutelin-content rice varieties is crucial to catering to the growing CKD population. In this study, we aimed to create a new low-glutelin indica rice variety with excellent agronomic traits. To achieve this, we employed a combination of molecular-marker-assisted selection and traditional breeding techniques. The cultivars W3660, Wushansimiao (WSSM), and Nantaixiangzhan (NTXZ) were crossbred, incorporating the Lgc-1, Pi-2, Xa23, and fgr alleles into a single line. The result of this breeding effort was "Yishenxiangsimiao", a new indica rice variety that inherits the desirable characteristics of its parent lines. Yishenxiangsimiao (YSXSM) possesses not only a low glutelin content but also dual resistance to blast and bacterial blight (BB). It exhibits high-quality grains with a fragrant aroma. This new low-glutelin indica cultivar not only ensures a stable food supply for CKD patients but also serves as a healthy dietary option for the general public. We also performed RNA-seq of these rice varieties to investigate their internal gene expression differences. The YSXSM exhibited a higher biotic-resistance gene expression in comparison to NTXZ. In summary, we successfully developed a novel low-glutelin indica rice variety, "Yishenxiangsimiao", with superior agronomic traits. This rice variety addresses the dietary needs of CKD patients and offers a nutritious choice for all consumers.

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