摘要
The response of clonal sweetpotato naturally infected with viruses was investigated. Analyses included yield, canopy biomass, and root colour on twelve virus infected (V + ) clones and corresponding virus-tested (V−) mericlones (clones derived from meristem-tip culture) of ‘Beauregard’ sweetpotato. All V + clones tested positive for Sweet potato feathery mottle virus and some clones additionally tested positive for Sweet potato virus G (SPVG) and/or the newly identified Ipomoea vein mosaic virus (IVMV). The V− mericlones had greater marketable yields for the important US No. 1 grade in three of four plantings in comparison to their V + clonal counterparts. Comparisons within V− mericlones did not show significant yield differences, suggesting clonal variation was minimal in this randomly selected set of ‘Beauregard’ mericlones. Canopy vine weight was lower overall in two of three plantings for V + clonal variants in comparison to their V− mericlones. Skin and flesh was redder and more yellow in V− mericlones in comparison to their V + clonal counterparts, cumulatively resulting in a deeper orange tissue. Our results from mericlone comparisons suggest that clonal variation was minor on general agronomic traits of ‘Beauregard’ sweetpotato and that variation in yield, canopy, and root coloration among V + clones and V− mericlones was mostly a function of virus infection
摘要译文
克隆甘薯自然感染病毒的反应进行了研究。分析包括产量，冠层生物量和根的颜色十二个病毒感染（V）克隆和相应的病毒测试（V克隆检测呈阳性的甘薯羽状斑驳病毒和一些克隆额外药检呈阳性甘薯病毒G（SPVG）和/或新发现的五爪脉花叶病毒（IVMV）。在Vmericlones并未出现显著产量差异，这表明克隆的变化是最小的在这个随机选择的''''博勒加德“mericlones集。葡萄树树冠重量是降低整体两三个种植欲诉相比其脆弱mericlones我们从mericlone比较结果表明，克隆变异是对未成年人的“加德”普通甘薯农艺性状和产量的变化，树冠，其中V和根着色
Heather W Carroll[a]; Arthur Q Villordon[c]; Christopher A Clark[b]; Don R La Bonte[a] ; Mary W Hoy[a]. Studies on Beauregard sweetpotato clones naturally infected with viruses[J]. International Journal of Pest Management, 2004,50(2): 101-106