Breeding an early maturing, blast resistance water-saving and drought-resistance rice (WDR) cultivar using marker-assisted selection coupled with rapid generation advance

Feiming Wang; Yi Liu; Anning Zhang; Deyan Kong; Junguo Bi; Guolan Liu; Xinqiao Yu; Lijun Luo

doi:10.1007/s11032-022-01319-3

Breeding an early maturing, blast resistance water-saving and drought-resistance rice (WDR) cultivar using marker-assisted selection coupled with rapid generation advance

Mol Breed. 2022 Aug 11;42(8):46. doi: 10.1007/s11032-022-01319-3. eCollection 2022 Aug.

Authors

Feiming Wang^#^{1

2}, Yi Liu^#^{1

2}, Anning Zhang^{1

2}, Deyan Kong^{1

2}, Junguo Bi^{1

2}, Guolan Liu^{1

2}, Xinqiao Yu^{1

2}, Lijun Luo^{1

2}

Affiliations

¹ Shanghai Agrobiological Gene Center, Shanghai, 201106 China.
² Key Laboratory of Grain Crop Genetic Resources Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Beijing, China.

^# Contributed equally.

Abstract

The japonica water-saving and drought-resistance rice (Oryza sativa L.) (WDR) cultivar Huhan 9 harbors genes for resistance to rice blast (Magnaporthe oryzae), including Pi-ta and Pi-b. The early maturing japonica rice cultivar Suhuxiangjing and the high-yield WDR cultivars Huhan 3 and Huhan 11 were used as the parents to conduct single cross breeding and composite hybridization breeding. Strict drought resistance screening was conducted in the segregating generations, the genotypes of which were determined using functional markers of Pi-ta and Pi-b genes. By combining the rapid generation advance of the industrialized breeding system and multi-site shuttle identification, the new WDR cultivar Huhan 106 with early maturity, blast resistance, high yield, and high quality was bred, and it was certified by the Agricultural Crop Variety Certification Commission of Shanghai in 2020. Molecular marker-assisted selection coupled with rapid generation advance and multi-site shuttle identification is a rapid and efficient breeding method for the value-added improvement of crop varieties.

Supplementary information: The online version contains supplementary material available at 10.1007/s11032-022-01319-3.

Keywords: Marker-assisted selection; Rapid generation advance; Water-saving and drought-resistance rice (WDR).

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