[Objectives]This study was conducted to improve the drought resistance of rice and cultivate new varieties of drought-tolerant rice to effectively alleviate the reduction in rice yield caused by drought.[Methods]Twent...[Objectives]This study was conducted to improve the drought resistance of rice and cultivate new varieties of drought-tolerant rice to effectively alleviate the reduction in rice yield caused by drought.[Methods]Twenty two indica and japonica rice varieties were tested to compare the yield differences under drought stress in the whole growth period and under drought stress in the flowering period.[Results]Drought stress in the whole growth period and flowering period significantly reduced rice yield,as well as the number of filled grains per plant,the number of filled grains per panicle and grain weight per plant.To evaluate the drought tolerance of rice varieties,relative yield could be used as the index under both drought stresses in the whole growth period and the flowering period.[Conclusions]This study provides a theoretical reference for drought-tolerant rice breeding and screening.展开更多
Rice is the main grain crop in China. With global warming, drought and water shortage have become one of the important factors limiting rice production. Improving the drought resistance of rice can effectively allevia...Rice is the main grain crop in China. With global warming, drought and water shortage have become one of the important factors limiting rice production. Improving the drought resistance of rice can effectively alleviate the loss of rice yield caused by drought. In this paper, the research progress on rice drought resistance and its evaluation methods, mapping of QTLs for drought resistance-related traits, and mining for drought resistance genes were reviewed, and molecular breeding for drought resistance in rice was prospected.展开更多
Drought is one of the important factors limiting rice production,and the application of new water-saving rice varieties is urgently needed in rice production.Wanliangyou 1008 bred by Institute of Rice Research,Anhui A...Drought is one of the important factors limiting rice production,and the application of new water-saving rice varieties is urgently needed in rice production.Wanliangyou 1008 bred by Institute of Rice Research,Anhui Academy of Agricultural Sciences is a new two line hybrid rice variety with some good traits,including high drought resistance,high yield and good disease resistance.Wanlingyou 1008 was obtained by crossing drought-resistant high-quality restorer line DJ1008 and disease-resistant two-line sterile line Wan 25S.In this paper,the breeding process,characteristics and seed production technology of the variety were described in detail.展开更多
基金Supported by Anhui Provincial Key Research and Development Program(202104f06020017,2022h11020011)Young Talent Fund of Anhui Academy of Agricultural SciencesAnhui Provincial Science and Technology Major Project(202003a06020005)。
文摘[Objectives]This study was conducted to improve the drought resistance of rice and cultivate new varieties of drought-tolerant rice to effectively alleviate the reduction in rice yield caused by drought.[Methods]Twenty two indica and japonica rice varieties were tested to compare the yield differences under drought stress in the whole growth period and under drought stress in the flowering period.[Results]Drought stress in the whole growth period and flowering period significantly reduced rice yield,as well as the number of filled grains per plant,the number of filled grains per panicle and grain weight per plant.To evaluate the drought tolerance of rice varieties,relative yield could be used as the index under both drought stresses in the whole growth period and the flowering period.[Conclusions]This study provides a theoretical reference for drought-tolerant rice breeding and screening.
基金Supported by Natural Science Foundation of Anhui Province (1908085MC93)Major Science and Technology Project of Anhui Province (2021d06050002)Anhui Province Joint Research on Improved Crop Varieties (Rice)。
文摘Rice is the main grain crop in China. With global warming, drought and water shortage have become one of the important factors limiting rice production. Improving the drought resistance of rice can effectively alleviate the loss of rice yield caused by drought. In this paper, the research progress on rice drought resistance and its evaluation methods, mapping of QTLs for drought resistance-related traits, and mining for drought resistance genes were reviewed, and molecular breeding for drought resistance in rice was prospected.
基金Supported by Anhui Provincial Science and Technology Major Project(202003a06020005,2021d06050002)Joint Research on Crop Varieties in Anhui Province(Rice)+1 种基金Innovation Team of Anhui Academy of Agricultural Sciences(2021YL004)Young Talents of Anhui Academy of Agricultural Sciences.
文摘Drought is one of the important factors limiting rice production,and the application of new water-saving rice varieties is urgently needed in rice production.Wanliangyou 1008 bred by Institute of Rice Research,Anhui Academy of Agricultural Sciences is a new two line hybrid rice variety with some good traits,including high drought resistance,high yield and good disease resistance.Wanlingyou 1008 was obtained by crossing drought-resistant high-quality restorer line DJ1008 and disease-resistant two-line sterile line Wan 25S.In this paper,the breeding process,characteristics and seed production technology of the variety were described in detail.
