China discovers game-changing hybrid rice gene to boost production by 38%

Chinese scientists have identified a crucial gene that could revolutionize the production of hybrid rice seeds.

Addressing this challenge, researchers from the Chinese Academy of Science, Hainan Seed Industry Laboratory, and China National Rice Research Institute have introduced a“Hybrid rice has achieved high grain yield and greatly contributes to food security, but the manual-labor-intensive hybrid seed production process limits fully mechanised hybrid rice breeding,” the team emphasized in their recent study.

This finding underscores the potential of GSE3 in enhancing the efficiency and productivity of hybrid rice production.China, a leader in growing hybrid rice, has gained significantly higher yields from using hybridization. Over the past decades, hybrid rice has boosted rice yields by 20 to 30 percent, enhancing global food security efforts.

The breakthrough involves crossing the Tianyouhuazhan “super-hybrid rice” with the Xiaoligeng variety to create a male sterile line with smaller grain size, facilitated by the GSE3 gene. This line is then paired with a large grain-size restorer line , enabling the mechanical separation of hybrid seeds from larger restorer seeds.After thorough testing, the team achieved 96 percent purity for hybrid seeds using a basic sieve, meeting commercial requirements.

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