甘薯卷叶病毒对甘薯生长特性及产量的影响

doi:10.12190/j.issn.2096-1197.2020.04.15

Abstract

Abstract: 【Objective】 To clarify the effects of sweet potato leaf curl virus（SPLCV）on the growth characteristics and yield of sweet potato,so as to enhance the efficient utilization of disease-resistant resources of sweet potato.【Methods】 The effects of SPLCV on pathogenicity,growth characteristics and yield of different sweet potato cultivars were studied by using field plot test method.【Results】 SPLCV had pathogenicity to all tested sweet potato varieties,but the severity of symptoms was different.Among them,the leaves of honey pot,Jizhi No.1 and other varieties showed obvious upward curling and yellower,while the leaves of Longshu No.9 and Shangshu No.19 showed curling in very few plants.The yield loss of different varieties ranged from 4.93% to 43.30%.SPLCV reduced the chlorophyll content index,leaf area and leaf fresh weight of Zhenghong 22 and Xushu 32,shortened the vine length,and reduced the branch number and leaf number of Zhenghong 22.When the fresh weight of sweet potato pieces was 90 and 120 d,the healthy seedlings increased by 0.09-0.19 kg/plant compared with the virus seedlings.【Conclusion】 Longshu No.9,Shangshu No.19,Xushu 32 and other resistant varieties could be popularized and applied in the areas with high incidence of SPLCV.

Key words: Sweet potato, SPLCV, Growth characteristics, Yield

CLC Number:

S435.31

ZHANG Chengling, SUN Houjun, YANG Dongjing, MA Jukui, XIE Yiping. Effects of leaf curl virus on growth characteristic and yield of sweet potato[J].Journal of Northern Agriculture, 2020, 48(4): 94-99.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2020.04.15

https://journal30.magtechjournal.com/bfnyxb/EN/Y2020/V48/I4/94

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Effects of leaf curl virus on growth characteristic and yield of sweet potato

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