热带作物学报2017，Vol.38Issue(2)：258-263,6.DOI:10.3969/j.issn.1000-2561.2017.02.012
遮阴对淀粉型甘薯生长发育及生理特性的影响
Effects of Shading on Growth, Development and Physiological Characteristics of Starchy Sweet Potato
摘要
Abstract
Artificial shading treatments were adopted to study the effects of yield,starch content,above-groundtraitsand physiology characteristics under three shade conditions (0,30％,70％) to investigate the response of starchy sweet potato to different light intensity.The results showed that,the leaf length,leaf width,petiole,distance between leaves and vine increased,but the stem diameter and the yield of fresh root,dry root and starch decreased with the increase of the degree of shade.In addition,the chlorophyll content,peroxidation (POD) activity,catalase (CAT) activity,MDA and proline content also increased while superoxide dismutase (SOD) activity and chlorophyll a/b ratio decreased in the leaves.As compared with CK,the starchy sweet potato variety "Guijingshu2" still grew well under 30％ shading but was greatly affected by 70％ shading on many negative effects such as aboveground partsovergrowth,stress resistance weakened,dry matter accumulation deficiency and both yield and quality reductions by weak light stress.Therefore,the way to realize high-yielding and high-efficient cropping patterns in intercropping was using reasonable field arrangement.关键词
淀粉型甘薯/遮阴/产量/品质/生理特性Key words
starchy sweet potato/shading/yield/quality/physiological characteristics分类
农业科技引用本文复制引用
李韦柳,唐秀桦,韦民政,熊军,许娟,闫海锋..遮阴对淀粉型甘薯生长发育及生理特性的影响[J].热带作物学报,2017,38(2):258-263,6.基金项目
广西科学研究与技术开发计划项目(桂科AB16380046) （桂科AB16380046）
广西科学研究与技术开发计划项目(桂科AB1638085) （桂科AB1638085）
广西农业科学院院市合作研究项目(桂农科2016HZ028) （桂农科2016HZ028）
广西农业科学院基本科研业务费资助项目(No.2015YT64) （No.2015YT64）
广西农业科学院发展基金资助项目(No.2015JM08) （No.2015JM08）
崇左市科学研究与技术开发计划项目(崇科攻1329030). （崇科攻1329030）
