Plant senescence plays diverse important roles in development and environmental responses.However,the molecular basis of plant senescence is remained largely unknown.A rice spontaneous mutant with the character of ear...Plant senescence plays diverse important roles in development and environmental responses.However,the molecular basis of plant senescence is remained largely unknown.A rice spontaneous mutant with the character of early senescence and male sterility （sms） was found in the breeding line NT10-748.In order to identify the gene SMS1 and the underlying mechanism,we preliminarily analyzed physiological and biochemical phenotypes of the mutant.The mutant contained lower chlorophyll content compared with the wild type control and was severe male sterile with lower pollen viability.Genetic analysis showed that the mutant was controlled by a single recessive gene.By the map-based cloning approach,we fine-mapped SMS1 to a 67 kb region between the markers Z3-4 and Z1-1 on chromosome 8 using 1,074 F2 recessive plants derived from the cross between the mutant sms1 （japonica） × Zhenshan 97 （indica）,where no known gene involved in senescence or male sterility has been identified.Therefore the SMS1 gene will be a novel gene that regulates the two developmental processes.The further cloning and functional analysis of the SMS1 gene is under way.展开更多
Taking the Zhejiang Academy of Agricultural Sciences as an example,the modes and approaches of combing industry-universities-research institutions to promote rural revitalization by agricultural scientific research un...Taking the Zhejiang Academy of Agricultural Sciences as an example,the modes and approaches of combing industry-universities-research institutions to promote rural revitalization by agricultural scientific research units are discussed.The main approaches are as follows:focusing on practical technical training to promote the transformation of scientific and technological achievements,transferring scientific and technological achievements to promote the deep integration of basic research,applied research and achievement transformation,and using the agronomist college as a carrier to promote the integrated development of industry-universities-research institutions and promote rural revitalization through systematic personnel training.展开更多
Genetic control of leucine content in indica-japonica hybrid rice (Oryza sativa L.) was studied in 35 crosses of F1 and F2 generations, which were derived from crossing 7 male sterile indica rice lines with 5 restorer...Genetic control of leucine content in indica-japonica hybrid rice (Oryza sativa L.) was studied in 35 crosses of F1 and F2 generations, which were derived from crossing 7 male sterile indica rice lines with 5 restorer japonica rice lines along with their parents. Two genetic models and their corresponding statistical methods for quantitative traits of triploid seeds in cereal crops were used for the analysis. The first was the unconditional genetic model, which refers to the analysis of cumulative measurements (from flowering to a specific time) along the developmental stages, while the second was the conditional genetic model, which relates to analysis from one developmental stage to another stage (t - 1→t). The results showed that leucine content of indica-japonica hybrid rice was controlled by the expression of triploid endosperm effect (endosperm additive effect and endosperm dominant effect), cytoplasm effect, diploid maternal plant effect (maternal additive effect and maternal dominant effect) and their environmental interaction effects. Of these effects, endosperm dominant effect and maternal dominant effect were more important at the earlier stages, while endosperm additive effect and maternal additive effect were more important at the later stages of rice grain development under both unconditional and conditional genetic analyses. Due to the high heritabilities, which came from endosperm, maternal and cytoplasm effects for leucine content at different developmental stages, selection for leucine content of indica-japonica hybrid rice would be more efficient at early generations in breeding programs.展开更多
The modes and approaches of promoting the implementation of strategy for rural revitalization based on agricultural science and technology commissioner system were studied by taking Zhejiang Academy of Agricultural Sc...The modes and approaches of promoting the implementation of strategy for rural revitalization based on agricultural science and technology commissioner system were studied by taking Zhejiang Academy of Agricultural Sciences as an example.The relevant modes and approaches were summarized,such as giving full play to the expertise of science and technology commissioners to promote the prosperity of rural industries,promoting ecological livable construction based on modern agricultural science and technology,promoting rural civilization based on agricultural science and technology,and promoting the construction of rural good governance based on advanced productivity.Besides,agricultural science and technology commissioners use the three elements of"people,technology,and money"to promote the enhancement of agricultural efficiency,farmers’income,and the prosperity of life and then the coordinated development of rural revitalization.展开更多
基金supported by the grants from the Science and Technology Office of Zhejiang Province,China (No. 2007C12902 and 2008C22068)Zhejiang Provincial Natural Science Foundation of China,Chinese Ministry of Agriculture (No. 200803034)the Hi-Tech Research and Development Program of China (No. 2007AA100101 and 2008AA02Z125)
文摘Plant senescence plays diverse important roles in development and environmental responses.However,the molecular basis of plant senescence is remained largely unknown.A rice spontaneous mutant with the character of early senescence and male sterility （sms） was found in the breeding line NT10-748.In order to identify the gene SMS1 and the underlying mechanism,we preliminarily analyzed physiological and biochemical phenotypes of the mutant.The mutant contained lower chlorophyll content compared with the wild type control and was severe male sterile with lower pollen viability.Genetic analysis showed that the mutant was controlled by a single recessive gene.By the map-based cloning approach,we fine-mapped SMS1 to a 67 kb region between the markers Z3-4 and Z1-1 on chromosome 8 using 1,074 F2 recessive plants derived from the cross between the mutant sms1 （japonica） × Zhenshan 97 （indica）,where no known gene involved in senescence or male sterility has been identified.Therefore the SMS1 gene will be a novel gene that regulates the two developmental processes.The further cloning and functional analysis of the SMS1 gene is under way.
基金Science and Technology Planning Project of Zhejiang Province(2018C02057,2018C02055)National Rice Industry Technology System(CARS-01-48).
文摘Taking the Zhejiang Academy of Agricultural Sciences as an example,the modes and approaches of combing industry-universities-research institutions to promote rural revitalization by agricultural scientific research units are discussed.The main approaches are as follows:focusing on practical technical training to promote the transformation of scientific and technological achievements,transferring scientific and technological achievements to promote the deep integration of basic research,applied research and achievement transformation,and using the agronomist college as a carrier to promote the integrated development of industry-universities-research institutions and promote rural revitalization through systematic personnel training.
文摘Genetic control of leucine content in indica-japonica hybrid rice (Oryza sativa L.) was studied in 35 crosses of F1 and F2 generations, which were derived from crossing 7 male sterile indica rice lines with 5 restorer japonica rice lines along with their parents. Two genetic models and their corresponding statistical methods for quantitative traits of triploid seeds in cereal crops were used for the analysis. The first was the unconditional genetic model, which refers to the analysis of cumulative measurements (from flowering to a specific time) along the developmental stages, while the second was the conditional genetic model, which relates to analysis from one developmental stage to another stage (t - 1→t). The results showed that leucine content of indica-japonica hybrid rice was controlled by the expression of triploid endosperm effect (endosperm additive effect and endosperm dominant effect), cytoplasm effect, diploid maternal plant effect (maternal additive effect and maternal dominant effect) and their environmental interaction effects. Of these effects, endosperm dominant effect and maternal dominant effect were more important at the earlier stages, while endosperm additive effect and maternal additive effect were more important at the later stages of rice grain development under both unconditional and conditional genetic analyses. Due to the high heritabilities, which came from endosperm, maternal and cytoplasm effects for leucine content at different developmental stages, selection for leucine content of indica-japonica hybrid rice would be more efficient at early generations in breeding programs.
基金Supported by Science and Technology Planning Project of Zhejiang Province(2018C02057)National Rice Industry Technology System(CARS-01-48)Major Scientific and Technological Project for the Breeding of New Agricultural(Grain)Varieties in Zhejiang Province(2016C02050-5).
文摘The modes and approaches of promoting the implementation of strategy for rural revitalization based on agricultural science and technology commissioner system were studied by taking Zhejiang Academy of Agricultural Sciences as an example.The relevant modes and approaches were summarized,such as giving full play to the expertise of science and technology commissioners to promote the prosperity of rural industries,promoting ecological livable construction based on modern agricultural science and technology,promoting rural civilization based on agricultural science and technology,and promoting the construction of rural good governance based on advanced productivity.Besides,agricultural science and technology commissioners use the three elements of"people,technology,and money"to promote the enhancement of agricultural efficiency,farmers’income,and the prosperity of life and then the coordinated development of rural revitalization.
