Dear Editors,Heterosis utilization is an effective way to improve crop yield.Hybrid rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian cou...Dear Editors,Heterosis utilization is an effective way to improve crop yield.Hybrid rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian countries since the 1980s(Cheng et al.,2007).To produce rice F1 hybrid seeds(HSDs),male sterile lines(MSLs)are grown side by side with restorer lines(RLs)in order to receive the RL pollen.This seed production system faces challenges in maintaining the seed purity of the HSDs owing to the physical proximity of MSL and RL plants in the field.Traditionally,MSLs and RLs are planted in alternate rows to enable physical separation of seeds during harvesting.展开更多
基金supported by the National Natural Science Foundation of China (grant nos.32072050,U22A20456,and U20A2030)a special support plan for high-level talents in Zhejiang (grant no.2022R52020)+4 种基金the Zhejiang Provincial Natural Science Foundation of China (grant no.LZ21C130001)the National Key R&D Program of China (2020YFE0202300)Open Project Funding of the State Key Laboratory of Biocatalysis and Enzyme Engineeringthe CNRRI key research and development project (CNRRI-2020-01)the ASTIP program of CAAS.
文摘Dear Editors,Heterosis utilization is an effective way to improve crop yield.Hybrid rice typically out-yield inbred rice varieties by 10%and show better stress resistance,and they have been widely adopted in Asian countries since the 1980s(Cheng et al.,2007).To produce rice F1 hybrid seeds(HSDs),male sterile lines(MSLs)are grown side by side with restorer lines(RLs)in order to receive the RL pollen.This seed production system faces challenges in maintaining the seed purity of the HSDs owing to the physical proximity of MSL and RL plants in the field.Traditionally,MSLs and RLs are planted in alternate rows to enable physical separation of seeds during harvesting.
