科技期刊-年份期数的搜索 - 中国科技论文在线

全部作者： Chengming Suna,Lijian Wanga,Tao Liua,Doudou Guoa,Yingying Chena,Wei Wua,Yulong Wanga,Jianguo Zhub U+3016(yzxxx)aKey Laboratory of Crop Genetics and Physiology of Jiangsu Province,College of Agriculture,Yangzhou University,Yangzhou 225009,China bInstitute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：Free air CO2 enrichment (FACE) and nitrogen (N) have marked effects on rice root growth,and numerical simulation can explain these effects.To further define the effects of FACE on root growth of rice,an experiment was performed,using the hybrid indica cultivar Xianyou 63.The effects of increasing...[查看全部]

论文摘要：Free air CO2 enrichment (FACE) and nitrogen (N) have marked effects on rice root growth,and numerical simulation can explain these effects.To further define the effects of FACE on root growth of rice,an experiment was performed,using the hybrid indica cultivar Xianyou 63.The effects of increasing atmospheric CO2 concentration [CO2],200 μmol mol.1 higher than ambient,on the growth of rice adventitious roots were evaluated,with two levels of N: low (LN,125 kg ha.1) and normal (NN,250 kg ha.1).The results showed a significant increase in both adventitious root number (ARN) and adventitious root length (ARL) under FACE treatment.The application of nitrogen also increased ARN and ARL,but these increases were smaller than that under FACE treatment.On the basis of the FACE experiment,numerical models for rice adventitious root number and length were constructed with time as the driving factor.The models illustrated the dynamic development of rice adventitious root number and length after transplanting,regulated either by atmospheric [CO2] or by N application.The simulation result was supported by statistical tests comparing experimental data from different years,and the model yields realistic predictions of root growth.These results suggest that the models have strong predictive potential under conditions of atmospheric [CO2]rises in the future.[返回]

下载频数：7　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

论文题目：Evaluation of maize inbred lines currently used in Chinese breeding programs for resistance to six foliar diseases

全部作者： Xiaoming Wanga,Yunhua Zhangb,Xiude Xuc,Hongjie Lia,Xiaofei Wua,Shihuang Zhanga,Xinhai Lia

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：Foliar diseases are common in most maize-producing regions and have caused serious yield reduction in China.To evaluate genetic resistance of parental lines actively used in maize breeding programs to major foliar diseases,152 maize inbred lines were tested against northern corn leaf blight...[查看全部]

论文摘要：Foliar diseases are common in most maize-producing regions and have caused serious yield reduction in China.To evaluate genetic resistance of parental lines actively used in maize breeding programs to major foliar diseases,152 maize inbred lines were tested against northern corn leaf blight (NCLB),southern corn leaf blight (SCLB),Curvularia leaf spot (CLS),gray leaf spot (GLS),common rust,and southern rust from 2003 to 2005.A small number of lines exhibited highly resistant reactions to common rust and southern rust,but none were highly resistant to NCLB,SCLB,CLS,and GLS.Although 53.3%,40.8%,and 80.7% of lines were resistant to NCLB,SCLB,and common rust,the resistance in most lines was moderate.Resistance to CLS,GLS,and southern rust was rare in this collection of maize lines.Five lines,313,Chang 7-2,Qi 319,Qi 318,and Shen 137,were resistant to five diseases tested.Lines belonging to heterotic subgroup PB exhibited better resistance to the foliar diseases than lines from other heterotic subgroups,such as BSSS,PA,Lancaster,LRC,and PA.The results will be of benefit to breeders for selecting lines in disease resistance breeding programs.[返回]

下载频数：6　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

论文题目：Effect of different levels of nitrogen deficiency on switchgrass seedling growth

全部作者： Yi Zhua,1,2,Xifeng Fana,2,Xincun Houa,Juying Wua,Tao Wangb

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：Switchgrass (Panicum virgatum L.) is a warm-season rhizomatous perennial grass that can tolerate diverse abiotic stresses while yielding relatively high biomass,and is considered a leading biofuel feedstock for marginal lands.Nitrogen (N) is crucial for the growth and development of...[查看全部]

论文摘要：Switchgrass (Panicum virgatum L.) is a warm-season rhizomatous perennial grass that can tolerate diverse abiotic stresses while yielding relatively high biomass,and is considered a leading biofuel feedstock for marginal lands.Nitrogen (N) is crucial for the growth and development of switchgrass,and its tolerance to low N supply and high N use efficiency are very important for its production under poor conditions.The large-scale planting of switchgrass on marginal lands could be an effective approach to solving the problem of feedstock supply for biomass energy.This study used a hydroponic experiment to evaluate the effect of N deficiency on switchgrass seedlings.Three N treatments (0,0.15,and 1.50 mmol L.1 Hoagland's solution) and six cultivars were used,three of each ecotype (upland and lowland).The results showed that biomass,leaf area,root surface area,net photosynthesis,and total chlorophyll content significantly decreased under low N treatments compared with those in full strength Hoagland's nutrient solution.However,once established,all plants survived extreme N stress (0 mmol L.1) and,to some extent,were productive.Cultivar Kanlow performed best of the six cultivars under stress.Significant interactions between stress treatment and cultivars showed that breeding for cultivars with high yield and superior performance under N deficiency is warranted.The lowland outperformed the upland ecotypes under stress,suggesting that lowland cultivars may survive and be productive under a wider range of stress conditions.However,given the better adaptability of lowland ecotypes to hydroponic cultivation,further study is needed.[返回]

下载频数：6　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

论文题目：Optimal yield-related attributes of irrigated rice for high yield potential based on path analysis and stability analysis

全部作者： Ganghua Lia,Jun Zhanga,Congdang Yanga,b,Yunpan Songa,Chengyan Zhengc,Shaohua Wanga,Zhenghui Liua,Yanfeng Dinga,..

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：[查看全部]

论文摘要：[返回]

下载频数：6　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

论文题目：Phenotypic analysis and molecular characterization of an allelic mutant of the D61 gene in rice

全部作者： Yanan Gaoa,b,Guangquan Wanga,Shoujiang Yuanc,Yanling Qinb,Jinfeng Zhaob,Yanpei Zhangb,d,Wenhui Zhanga,Xueyong Lib

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：Brassinosteroids (BRs) are a class of plant-specific steroidal hormones that play important roles in multiple biological processes.In this paper,a classic rice mutant gsor300084,showing erect leaves and semi-dwarf stature,was characterized.Morphological analysis in darkness showed that the...[查看全部]

论文摘要：Brassinosteroids (BRs) are a class of plant-specific steroidal hormones that play important roles in multiple biological processes.In this paper,a classic rice mutant gsor300084,showing erect leaves and semi-dwarf stature,was characterized.Morphological analysis in darkness showed that the mesocotyl of the gsor300084 mutant did not elongate when grown in darkness.Coleoptile elongation and root growth were less affected by the exogenous application of brassinolide (BL),the most active form of BR,in gsor300084 than in the wild-type rice variety Matsumae.Lamina joint bending analysis also showed that gsor300084 was less sensitive to exogenous BL than Matsumae.These results suggested that the gsor300084 mutant is defective in BR sensitivity.Map-based cloning indicated that gsor300084 is a novel allelic mutant of the DWARF61 (D61) gene,which encodes the putative BR receptor OsBRI1.A single-base mutation appears in the LRR domain of OsBRI1,changing the 444th amino acid from tryptophan (W) to arginine (R).Subcellular localization analysis suggested that both the wild-type and mutant OsBRI1 protein are localized at the cytoplasmic membrane.Structure modeling revealed that the W444R substitution may affect the perception of BRs by the LRR domain.[返回]

下载频数：6　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

论文题目：Development and mapping of SSR markers linked to resistance-gene homologue clusters in common bean

全部作者： Luz Nayibe Garzon a,b,Matthew Wohlgemuth Blair b,c,d,

期刊名称：作物学报(英文版) 2014年第4期

论文摘要：Common bean is an important but often a disease-susceptible legume crop of temperate,subtropical and tropical regions worldwide.The crop is affected by bacterial,fungal and viral pathogens.The strategy of resistance-gene homologue (RGH) cloning has proven to be an efficient tool for identifying...[查看全部]

论文摘要：Common bean is an important but often a disease-susceptible legume crop of temperate,subtropical and tropical regions worldwide.The crop is affected by bacterial,fungal and viral pathogens.The strategy of resistance-gene homologue (RGH) cloning has proven to be an efficient tool for identifying markers and R (resistance) genes associated with resistances to diseases.Microsatellite or SSR markers can be identified by physical association with RGH clones on large-insert DNA clones such as bacterial artificial chromosomes (BACs).Our objectives in this work were to identify RGH-SSR in a BAC library from the Andean genotype G19833 and to test and map any polymorphic markers to identify associations with known positions of disease resistance genes.We developed a set of specific probes designed for clades of common bean RGH genes and then identified positive BAC clones and developed microsatellites from BACs having SSR loci in their end sequences.A total of 629 new RGH-SSRs were identified and named BMr (bean microsatellite RGH-associated markers).A subset of these markers was screened for detecting polymorphism in the genetic mapping population DOR364 × G19833.A genetic map was constructed with a total of 264 markers,among which were 80 RGH loci anchored to single-copy RFLP and SSR markers.Clusters of RGH-SSRs were observed on most of the linkage groups of common bean and in positions associated with R-genes and QTL.The use of these new markers to select for disease resistance is discussed.[返回]

下载频数：6　　　　　　　上传时间：2014-08-01 　　　　　　　加入收藏

在线简介	服务条款
顾问委员会	主编专栏
部门设置	栏目简介
使用指南	常见问题

中华人民共和国教育部	教育部科学技术司	教育部科技发展中心	中国教育与科研计算机网	教育部学位与研究生教育发展中心	国家留学基金委
教育部科技查新服务平台	中国学术会议在线	中国教育人力资源系统	中国教育新闻网	神州学人中国教育在线校园先锋	OA在线资源集成平台

信息速递更多

关于在线

数据更新

招聘信息更多

学术监督

高校认可更多

工具下载

作物学报(英文版)

友情链接

	全部
	全部

信息速递 更多

关于在线

数据更新

招聘信息更多

学术监督

高校认可更多

工具下载

作物学报(英文版)

友情链接

信息速递更多