Under the background of aging population, facing the silver wave of strikes, the whole society should prepare the attendant opportunities and chaUenges. The aging society is a big trend, and the phenomenon that can no...Under the background of aging population, facing the silver wave of strikes, the whole society should prepare the attendant opportunities and chaUenges. The aging society is a big trend, and the phenomenon that can not be ignored will affect the life of each of us. Coincides with the party and the government advocates the policy background of the harmonious society, how to provide services effectively for the older age groups, not only related to the well-being of older age groups and will in the social relations of each individual has a personal positive externalities. So pay attention to the aging is a urgent measures, begin to solve problems caused by aging and meet with aging opportunities, only to rely on binary structure composed of government and business is slightly lack of power, we must to play a wide range of social forces involved. Social forces through the third deparunents in the form of organization, this paper focuses on the third sector to participate in the study of the old service.展开更多
Seed vigor is an important characteristic of seed quality,and rice cultivars with strong seed vigor are desirable in direct-sowing rice production for optimum stand establishment.In the present study,the quantitative ...Seed vigor is an important characteristic of seed quality,and rice cultivars with strong seed vigor are desirable in direct-sowing rice production for optimum stand establishment.In the present study,the quantitative trait loci (QTLs) of three traits for rice seed vigor during the germination stage,including germination rate,final germination percentage,and germination index,were investigated using one recombinant inbred line (RIL) population derived from a cross between japonica Daguandao and indica IR28,and using the multiple interval mapping (MIM) approach.The results show that indica rice presented stronger seed vigor during the germination stage than japonica rice.A total of ten QTLs,and at least five novel alleles,were detected to control rice seed vigor,and the amount of variation (R2) explained by an individual QTL ranged from 7.5% to 68.5%,with three major QTLs with R2>20%.Most of the QTLs detected here are likely to coincide with QTLs for seed weight,seed size,or seed dormancy,suggesting that the rice seed vigor might be correlated with seed weight,seed size,and seed dormancy.At least five QTLs are novel alleles with no previous reports of seed vigor genes in rice,and those major or minor QTLs could be used to significantly improve the seed vigor by marker-assisted selection (MAS) in rice.展开更多
文摘Under the background of aging population, facing the silver wave of strikes, the whole society should prepare the attendant opportunities and chaUenges. The aging society is a big trend, and the phenomenon that can not be ignored will affect the life of each of us. Coincides with the party and the government advocates the policy background of the harmonious society, how to provide services effectively for the older age groups, not only related to the well-being of older age groups and will in the social relations of each individual has a personal positive externalities. So pay attention to the aging is a urgent measures, begin to solve problems caused by aging and meet with aging opportunities, only to rely on binary structure composed of government and business is slightly lack of power, we must to play a wide range of social forces involved. Social forces through the third deparunents in the form of organization, this paper focuses on the third sector to participate in the study of the old service.
基金Project supported by the National Natural Science Foundation of China (No. 31000748)the Natural Science Foundation of Jiangsu Province (No. BK2010452)the Science and Technology Innovation Foun-dation of Nanjing Agricultural University (No. KJ09003), China
文摘Seed vigor is an important characteristic of seed quality,and rice cultivars with strong seed vigor are desirable in direct-sowing rice production for optimum stand establishment.In the present study,the quantitative trait loci (QTLs) of three traits for rice seed vigor during the germination stage,including germination rate,final germination percentage,and germination index,were investigated using one recombinant inbred line (RIL) population derived from a cross between japonica Daguandao and indica IR28,and using the multiple interval mapping (MIM) approach.The results show that indica rice presented stronger seed vigor during the germination stage than japonica rice.A total of ten QTLs,and at least five novel alleles,were detected to control rice seed vigor,and the amount of variation (R2) explained by an individual QTL ranged from 7.5% to 68.5%,with three major QTLs with R2>20%.Most of the QTLs detected here are likely to coincide with QTLs for seed weight,seed size,or seed dormancy,suggesting that the rice seed vigor might be correlated with seed weight,seed size,and seed dormancy.At least five QTLs are novel alleles with no previous reports of seed vigor genes in rice,and those major or minor QTLs could be used to significantly improve the seed vigor by marker-assisted selection (MAS) in rice.
