This study was to investigate the influence of SPVD on the growth devel- opment and yield formation of sweet potato, The virus seeding, landrace, virus-free seedlings of high starch sweet potato XichengO07 were inocul...This study was to investigate the influence of SPVD on the growth devel- opment and yield formation of sweet potato, The virus seeding, landrace, virus-free seedlings of high starch sweet potato XichengO07 were inoculated with SPVD for revealing the interaction mechanism, The results showed that SPVD could result in clustering and dwarfing of sweet potato plant type, smaller leaves and lower effec- tive of leaf area, reduced chlorophyll content, and smaller source, lowered assimila- tive ability and photosynthetic capacity. The flow became smaller, further finally led to the reduced biological yield, and the desorption of SPVD could increase leaf "source" and the chlorophyll content, improve photosynthetic and flow ability, thus raising the output of production. SPVD could reduce the activities of SOD, POD and CAT in sweet potato plant, increase the content of MDA, decrease antioxidant activity and production, damage the cell membrane. However, virus-free treatment could increase the activities of SOD, POD and CAT in plants, which was helpful to reduce the harm of MDA. After the desorption of SPVD, the production of above- ground was increased by 3.4% and the production of fresh sweet potato was up by 2.9%, while SPVD dissemination could result in the reduction of the aboveground and fresh tubers by 69.9% and 49.1%, respectively.展开更多
为建立可同时检测甘薯褪绿矮化病毒(SPCSV)、甘薯G病毒(SPVG)和甘薯羽状斑驳病毒(SPFMV)多重RT-PCR检测方法,本文根据SPCSV热激蛋白基因(hsp70)及SPVG、SPFMV外壳蛋白基因(CP)基因核苷酸序列的保守区域设计特异性引物,通过引...为建立可同时检测甘薯褪绿矮化病毒(SPCSV)、甘薯G病毒(SPVG)和甘薯羽状斑驳病毒(SPFMV)多重RT-PCR检测方法,本文根据SPCSV热激蛋白基因(hsp70)及SPVG、SPFMV外壳蛋白基因(CP)基因核苷酸序列的保守区域设计特异性引物,通过引物筛选,优化多重RT-PCR反应条件,建立了能同时检测SPCSV、SPVG和SPFMV 3种病毒的多重RT-PCR检测方法。该体系能有效扩增出大小为304、433、601 bp 3个特异性片段。测序结果表明3种病毒与参考序列的一致性达94%-99%。应用建立的多重RT-PCR检测方法可稳定、准确、灵敏地同时检测单一或复合侵染3种甘薯病毒,为甘薯脱毒和病毒病诊断奠定基础。展开更多
基金Supported by Construction Program of Culitvation Post for Mid-lower Reaches of Yangtze River of Modern Agricultural Industry Technology System(nycytx-16-B-13)Program from Nanchong Experimental Station of Modern Agricultural Industry Technology System(nycytx-16-c-16)Program of Sichuan-Chongqing Potato and Soybean Observation Station of Ministry of Agriculture~~
文摘This study was to investigate the influence of SPVD on the growth devel- opment and yield formation of sweet potato, The virus seeding, landrace, virus-free seedlings of high starch sweet potato XichengO07 were inoculated with SPVD for revealing the interaction mechanism, The results showed that SPVD could result in clustering and dwarfing of sweet potato plant type, smaller leaves and lower effec- tive of leaf area, reduced chlorophyll content, and smaller source, lowered assimila- tive ability and photosynthetic capacity. The flow became smaller, further finally led to the reduced biological yield, and the desorption of SPVD could increase leaf "source" and the chlorophyll content, improve photosynthetic and flow ability, thus raising the output of production. SPVD could reduce the activities of SOD, POD and CAT in sweet potato plant, increase the content of MDA, decrease antioxidant activity and production, damage the cell membrane. However, virus-free treatment could increase the activities of SOD, POD and CAT in plants, which was helpful to reduce the harm of MDA. After the desorption of SPVD, the production of above- ground was increased by 3.4% and the production of fresh sweet potato was up by 2.9%, while SPVD dissemination could result in the reduction of the aboveground and fresh tubers by 69.9% and 49.1%, respectively.
文摘为建立可同时检测甘薯褪绿矮化病毒(SPCSV)、甘薯G病毒(SPVG)和甘薯羽状斑驳病毒(SPFMV)多重RT-PCR检测方法,本文根据SPCSV热激蛋白基因(hsp70)及SPVG、SPFMV外壳蛋白基因(CP)基因核苷酸序列的保守区域设计特异性引物,通过引物筛选,优化多重RT-PCR反应条件,建立了能同时检测SPCSV、SPVG和SPFMV 3种病毒的多重RT-PCR检测方法。该体系能有效扩增出大小为304、433、601 bp 3个特异性片段。测序结果表明3种病毒与参考序列的一致性达94%-99%。应用建立的多重RT-PCR检测方法可稳定、准确、灵敏地同时检测单一或复合侵染3种甘薯病毒,为甘薯脱毒和病毒病诊断奠定基础。