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作物学报(英文版)

2014年第5期共有论文10篇

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论文题目：Isolation and characterization of a novel wall-associated kinase gene TaWAK5 in wheat(Triticum aestivum)

全部作者： Kun Yang,Lin Qi,Zengyan Zhang*

期刊名称：作物学报(英文版) 2014年第5期

论文摘要：Wall-associated kinases (WAKs) play an important role in plant defense and development. Considerable progress has been made in understanding WAK genes in Arabidopsis thaliana. However, much less is known about these genes in common wheat. Here, we isolated a novel wheat WAK gene TaWAK5 from sharp...[查看全部]

论文摘要：Wall-associated kinases (WAKs) play an important role in plant defense and development. Considerable progress has been made in understanding WAK genes in Arabidopsis thaliana. However, much less is known about these genes in common wheat. Here, we isolated a novel wheat WAK gene TaWAK5 from sharp eyespot disease-resistant wheat line CI12633, based on a differentially-expressed sequence identified by microarray analysis. The transcript abundance of TaWAK5 was rapidly increased following inoculation with the pathogen Rhizoctonia cerealis. TaWAK5 in resistant wheat lines was induced to higher levels than in susceptible lines at 7 days post inoculation with R. cerealis. The expression of TaWAK5 was also induced by treatments with exogenous salicylic acid, abscisic acid, and methyl jasmonate. The deduced TaWAK5 protein contained a signal peptide, two epidermal growth factor (EGF)-like repeats, a transmembrane domain, and a serine/threonine protein kinase catalytic domain. Subcellular localization analyses in onion epidermal cells indicated that the TaWAK5 protein was localized to the plasma membrane. Virus-induced gene silencing of TaWAK5 in CI12633 plants showed that the silencing of TaWAK5 did not obviously impair wheat resistance to R. cerealis, suggesting that TaWAK5 may be not the major gene in wheat defense response to R. cerealis, or that it is functionally redundant with other genes. This study paves the way for further research into WAK functions in wheat stress physiology.[返回]

下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：An expedited method for isolation of DNA for PCR from Magnaporthe oryzae stored on filter paper

全部作者： Yulin Jiaa,*,Yeshi A.Wamisheb,Bo Zhouc

期刊名称：作物学报(英文版) 2014年第5期

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下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：Morphological,cytological and molecular analyses of a synthetic hexaploid derived from aninterspecific hybrid between Gossypium hirsutum and Gossypium anomalum

全部作者： Xia Zhanga,b,Caijiao Zhaia,b,Linchi Hec,Qi Guoa,b,Xianggui Zhanga,b,Peng Xua,b,Hongmei Sua,b,Yuanyong Gonga,b,Wanchao Nia,b,Xinlian Shena,b,*

期刊名称：作物学报(英文版) 2014年第5期

论文摘要：Gossypium anomalum represents an inestimable source of genes that could potentially be transferred into the gene pool of cultivated cotton. To resolve interspecific hybrid sterility problems, we previously treated triploid hybrids derived from a cross between Gossypium hirsutum and G. anomalum...[查看全部]

论文摘要：Gossypium anomalum represents an inestimable source of genes that could potentially be transferred into the gene pool of cultivated cotton. To resolve interspecific hybrid sterility problems, we previously treated triploid hybrids derived from a cross between Gossypium hirsutum and G. anomalum with 0.15%colchicine and obtained a putative fertile hexaploid. In this study, we performed morphological, molecular and cytological analyses to assess the hybridity and doubled status of putative interspecific hybrid plants. Most of the morphological characteristics of the putative hexaploid plants were intermediate between G. hirsutum and G. anomalum. Analysis of mitotic metaphase plates revealed 78 chromosomes, confirming the doubled hybrid status of the hexaploid. Genome-wide molecular analysis with different genome-derived SSR markers revealed a high level of polymorphism (96.6%) between G. hirsutum and G. anomalum. The marker transferability rate from other species to G. anomalum was as high as 98.0%. The high percentage of polymorphic markers with additive banding profiles in the hexaploid indicates the hybridity of the hexaploid on a genome-wide level. A-genome-derived markers were more powerful for distinguishing the genomic differences between G. hirsutum and G. anomalum than D-genome-derived markers. This study demonstrates the hybridity and chromosomally doubled status of the (G. anomalum × G. hirsutum)2 hexaploid using morpholog-ical, cytological and molecular marker methods. The informative SSR markers screened in the study will be useful marker resources for tracking the flow of G. anomalum genetic material among progenies that may be produced by future backcrosses to G. hirsutum.[返回]

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论文题目：Genetic dissection of tetraploid cotton resistant to Verticillium wilt using interspecific chromosome segment introgression lines

全部作者： Peng Wanga,Zhiyuan Ninga,Ling Linb,Hong Chenc,Hongxian Meia,Jun Zhaoa,Bingliang Liua,Xin Zhanga,Wangzhen Guoa,Tianzhen Zhanga,*

期刊名称：作物学报(英文版) 2014年第5期

论文摘要：Verticillium wilt (caused by the pathogen Verticillium dahliae) is of high concern for cotton producers and consumers. The major strategy for controlling this disease is the development of resistant cotton (Gossypium spp.) cultivars. We used interspecific chromosome segment introgression lines...[查看全部]

论文摘要：Verticillium wilt (caused by the pathogen Verticillium dahliae) is of high concern for cotton producers and consumers. The major strategy for controlling this disease is the development of resistant cotton (Gossypium spp.) cultivars. We used interspecific chromosome segment introgression lines (CSILs) to identify quantitative trait loci (QTL) associated with resistance to Verticillium wilt in cotton grown in greenhouse and inoculated with three defoliating V. dahliae isolates. A total of 42 QTL, including 23 with resistance-increasing and 19 with resistance-decreasing, influenced host resistance against the three isolates. These QTL were identified and mapped on 18 chromosomes (chromosomes A1, A3, A4, A5, A7, A8, A9, A12, A13, D1, D2, D3, D4, D5, D7, D8, D11, and D12), with LOD values ranging from 3.00 to 9.29. Among the positive QTL with resistance-increasing effect, 21 conferred resistance to only one V. dahliae isolate, suggesting that resistance to V. dahliae conferred by most QTL is pathogen isolate-specific. The At subgenome of cotton had greater effect on resistance to Verticillium wilt than the Dt subgenome. We conclude that pyramiding different resistant QTL could be used to breed cotton cultivars with broad-spectrum resistance to Verticillium wilt.[返回]

下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：The impacts of conservation agriculture on crop yield in China depend on specific practices,crops and cropping regions

全部作者： Chengyan Zhenga,b,1,Yu Jiangc,1,Changqing Chenc,Yanni Sunc,Jinfei Fenga,b,Aixing Denga,b,Zhenwei Songa,b,Weijian Zhanga,b,c,*

期刊名称：作物学报(英文版) 2014年第5期

论文摘要：For smooth and wide application of conservation agriculture (CA), remaining uncertainties about its impacts on crop yield need to be reduced. Based on previous field experiments in China, a meta-analysis was performed to quantify the actual impacts of CA practices (NT: no/reduced-tillage only,...[查看全部]

论文摘要：For smooth and wide application of conservation agriculture (CA), remaining uncertainties about its impacts on crop yield need to be reduced. Based on previous field experiments in China, a meta-analysis was performed to quantify the actual impacts of CA practices (NT: no/reduced-tillage only, CTSR: conventional tillage with straw retention, NTSR: NT with straw retention) on crop yields as compared to conventional tillage without straw retention (CT). Although CA practices increased crop yield by 4.6%on average, there were large variations in their impacts. For each CA practice, CTSR and NTSR significantly increased crop yield by 4.9%and 6.3%, respectively, compared to CT. However, no significant effect was found for NT. Among ecological areas, significant positive effects of CA practices were found in areas with an annual precipitation below 600 mm. Similar effects were found in areas with annual mean air temperature above 5 °C. For cropping regions, CA increased crop yield by 6.4% and 5.5%compared to CT in Northwest and South China, respectively, whereas no significant effects were found in the North China and Northeast China regions. Among crops, the positive effects of CA practices were significantly higher in maize (7.5%) and rice (4.1%) than in wheat (2.9%). NT likely decreased wheat yield. Our results indicate that there are great differences in the impacts of CA practices on crop yield, owing to regional variation in climate and crop types. CA will most likely increase maize yield but reduce wheat yield. It is strongly recommended to apply CA with crop straw retention in maize cropping areas and seasons with a warm and dry climate pattern.[返回]

下载频数：7　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：Effect of subsoil tillage depth on nutrientaccumulation,root distribution,and grain yield in spring maize

全部作者： Hongguang Caia,1,Wei Mab,1,Xiuzhi Zhanga,Jieqing Pingc,Xiaogong Yana,Jianzhao Liua,Jingchao Yuana,Lichun Wanga,*,Jun Rena,*

期刊名称：作物学报(英文版) 2014年第5期

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下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：Identification of QTL for adult-plant resistance to powdery mildew in Chinese wheat landracePingyuan 50

全部作者： Muhammad Azeem Asada,1,Bin Baib,1,Caixia Lana,Jun Yanc,Xianchun Xiaa,Yong Zhanga,Zhonghu Hea,d,*

期刊名称：作物学报(英文版) 2014年第5期

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下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：Exp2 polymorphisms associated with variation for fiber quality properties in cotton(Gossypium spp.)

全部作者： Daohua Hea,*,1,Zhongping Leib,1,Hongyi Xinga,Baoshan Tanga,Junxing Zhaoa,Bixia Lua

期刊名称：作物学报(英文版) 2014年第5期

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下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

论文题目：Genotype × environment interaction effects on early fresh storage root yield and related traits in cassava

全部作者： Robooni Tumuhimbisea,b,*,Rob Melisa,Paul Shanahana,Robert Kawukib

期刊名称：作物学报(英文版) 2014年第5期

论文摘要：Cassava (Manihot esculenta Crantz) is an important root crop worldwide. It exhibits substantial differential genotypic responses to varying environmental conditions, a phenomenon termed genotype × environment interaction (GEI). A significant GEI presents challenges in the selection of superior...[查看全部]

论文摘要：Cassava (Manihot esculenta Crantz) is an important root crop worldwide. It exhibits substantial differential genotypic responses to varying environmental conditions, a phenomenon termed genotype × environment interaction (GEI). A significant GEI presents challenges in the selection of superior genotypes. The objective of this study was to examine the effect of genotype, environment and GEI on early fresh storage root yield (FSRY) and related traits in cassava. Accordingly, 12 cassava genotypes were evaluated in a randomised complete block design at three contrasting locations (Jinja, Nakasongola and Namulonge) in Uganda. Trials were harvested nine months after planting and the data collected were analysed using the additive main effects and multiplicative interaction (AMMI) model. The AMMI analysis of variance showed significant variation among genotypes for early FSRY and all other traits assessed. Locations were significantly different for all traits except for cassava brown streak disease root necrosis. The GEI effect was non-significant for early FSRY, but significant for other traits. For early FSRY, 48.5% of the treatment sum of squares was attributable to genotypes, 27.3% to environments, and 24.1%to GEI, indicating a predominance of genotypic variation for this trait. Predominance of genotypic variation was also observed for all the other traits. A majority of the genotypes (67%) had low interaction effects with locations for early FSRY, with Akena, CT2, CT4 and NASE14 being the most stable genotypes for the trait. Significant negative correlation was observed between cassava mosaic disease severity and early FSRY and storage root number, indicating significant negative effects of cassava mosaic disease on early FSRY and stability in cassava. The information generated will inform future selection initiatives for superior early-yielding cassava genotypes combining resistance to cassava mosaic and brown streak diseases in Uganda.[返回]

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论文题目：Productivity,quality and soil health as influenced by lime in ricebean cultivars in foothillsof northeastern India

全部作者： Rakesh Kumara,Dibyendu Chatterjeea,*,Narendra Kumawatb,Avinash Pandeyc,Aniruddha Royc,Manoj Kumara

期刊名称：作物学报(英文版) 2014年第5期

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下载频数：6　　　　　　　上传时间：2014-12-18 　　　　　　　加入收藏

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