Traditional Chinese herbal medicine, polygonum flaccidum meisn, had a favourable development prospect on pesticide, medicine, veterinary drug and food additives. It was necessary to provide the theory evidence to make...
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A facile microwave-assisted procedure for synthesis of novel fluorinated pyrazolo[3,4-d]pyrimidine derivatives containing 1,3,4-thiadiazole is described. This protocol presented such advantages as short reaction time,...
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A facile microwave-assisted procedure for synthesis of novel fluorinated pyrazolo[3,4-d]pyrimidine derivatives containing 1,3,4-thiadiazole is described. This protocol presented such advantages as short reaction time, high yields, simple purification and environmentally benign procedures. Their antitumor activities were evaluated against HL-60 by an MTT assay. The preliminary results indicated that some title compounds exhibit more potent antitumor inhibitory activity than doxorubicin （DOX）.
In this paper, a delayed ratio-dependent Holling-III predator-prey system with stagestructured and impulsive stocking on prey and continuous harvesting on predator is considered. The authors obtain sufficient conditio...
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In this paper, a delayed ratio-dependent Holling-III predator-prey system with stagestructured and impulsive stocking on prey and continuous harvesting on predator is considered. The authors obtain sufficient conditions of the global attractivity of predator-extinction periodic solution and the permanence of the system. These＇ results show that the behavior of impulsive stocking on prey plays an important role for the permanence of the system. The authors also prove that all solutions of the system are uniformly ultimately bounded. The results show that the biological resource management is effective and reliable. key words Globally attractivity, impulsive effect, permanence, ratio-dependent, stage-structured.
APETALA2 (AP2) gene encodes a floral homeotic gene, is involved in the specification of floral organ identity, establishment of floral meristem identity, development of the ovule and seed coat, and controlling seed ma...
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To determine the physiological impact of selenium on the root of Cardamine sp., a Se-hyperaccumulator at Enshi, the plant was cultured in complete nutrient solution containing 0,15,30,45,60,75, or 90 mg·L-1 Na 2S...
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The impacts of transgenic Bt rice on target pests and their predators need to be clarified prior to the commercialization of Bt *** this study,the percentages of folded leaves of three transgenic Bt rice lines and non...
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The impacts of transgenic Bt rice on target pests and their predators need to be clarified prior to the commercialization of Bt *** this study,the percentages of folded leaves of three transgenic Bt rice lines and non-transgenic parental rice line caused by Cnaphalocrocis medinalis were studied over two successive growing *** addition,the population densities,relative abundance and population dynamics of *** and four species of its natural arthropod predators were investigated at three sites in *** results showed that rice line significantly affected the percentages of folded leaves and population densities of *** *** higher percentages of folded leaves were observed on the non-transgenic rice compared with the three transgenic Bt rice on most sampling *** higher densities of *** larvae and higher relative abundance of *** within phytophages were found on non-transgenic rice compared with three transgenic Bt rice at different sites across the study *** population dynamics of *** larvae were significantly affected by rice line,rice line×sampling date,rice line×year,rice line×sampling date×***,there was little,if any,significant difference in the relative abundance,population density and population dynamics of the four arthropod predators between the three Bt rice lines and non-transgenic *** results of this study indicate that the Bt toxin in transgenic Bt rice can effectively suppress the occurrence of ***,but has no significant effects on the occurrence of the four predatory arthropod species.
APETALA2 (AP2) gene encodes a floral homeotic gene, is involved in the specification of floral organ identity, establishment of floral meristem identity, development of the ovule and seed coat, and controlling seed ma...
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ISBN:
(纸本)9781424491728
APETALA2 (AP2) gene encodes a floral homeotic gene, is involved in the specification of floral organ identity, establishment of floral meristem identity, development of the ovule and seed coat, and controlling seed mass. Here we reported that an amino acid mutation of AP2 effect on the petal identify, also cause leaf shape change and early anthesis.
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