期刊文献

Sweetpotato virus pathogen-tested planting material of susceptible varieties results in root yield increase in Uganda 收藏

甘薯病毒病原体经过检测的易感品种的种植材料导致乌干达的根产量增加

原文求助发布源

作者

S. NamandaR.O.M. MwangaS. MukasaD. TalengeraC. MusokeG. KyaloJ. LowG. SsemakulaS. MageziA.-M. Ball[1]

作者单位

International Potato Center, P.O. Box 22274, Kampala, Uganda[∗]School of Agricultural Sciences, Makerere University, P.O. Box 7062, Kampala, UgandaBioCrops Uganda Limited, P.O. Box. 3016, Kampala, UgandaHarvestPlus, International Food Policy Research Institute, P.O. Box 28565, Kampala, UgandaInternational Potato Center, P.O. Box 22274, Kampala, UgandaRegional Office for Sub-Saharan Africa, International Potato Center, P.O. Box 25171, Nairobi, KenyaNaCRRI, National Crops Resources Research Institute, P.O. Box 7084, Kampala, UgandaHarvestPlus, International Food Policy Research Institute, P.O. Box 28565, Kampala, UgandaHarvestPlus, International Food Policy Research Institute, P.O. Box 28565, Kampala, Uganda[1]Current address: 2033 K Street, NW, Washington, DC 20006–1002, USA.[1]Current address: 2033 K Street, NW, Washington, DC 20006–1002, USA.

关键词

Ipomoea batatas. sweetpotato;Virus-tested;Yield;Cycles;Flush-out;

关键词译文

番薯。 sweetpotato;经过病毒测试的;屈服的;循环的;冲洗的;

发布日期

1 October 2019

DOI

10.1016/j.cropro.2019.104851

来源信息

Crop Protection ISSN：0261-2194, 2019年, 124卷

摘要

Sweetpotato virus disease (SPVD) causes more than 90 percent yield decline, especially in areas with high disease pressure. In central Uganda region, Ejumula, an SPVD susceptible variety almost disappeared on farmers' fields due to SPVD by fourth implementation year HarvestPlus project in 2010. In response, research-development partnerships conducted participatory validation trials to enable farmers appreciate the storage yield advantage of planting virus-tested material. Virus-tested cuttings, each 20-cm long of Ejumula and Kabode varieties were sourced from BioCrops private sector laboratory and planted at two sites in each of four different districts. In each district two farmers hosted the trial and at each site the trial was replicated three times for four successive seasons in 2013–2014. Pre-harvest data on SPVD at 42 days and harvest at 100 days after planting were collected. Virus-indexed planting material out yielded (15.0 tons/ha) farmers' own material (2.7 tons/ha) and fourth season on-farm replanting (3.1 tons/ha), representing 82 and 79 percent root yield loss, respectively. Whereas SPVD scores increased with increase in number of cycles, storage root yield declined for both resistant and susceptible varieties. There was no significant (P ≤ 0.05) difference in both visual symptoms and storage root yield on initially virus-tested planting material and farmers’ own material after three successive seasons. Thus, recommendable to flush-out after two cycles.

摘要译文

甘薯病毒病（SPVD）导致产量下降90％以上，尤其是在疾病压力高的地区。在乌干达中部地区的Ejumula，由于SPVD在2010年第四个实施年的HarvestPlus项目中受到SPVD的影响，农民田间几乎没有SPVD易感品种。作为回应，研究与开发伙伴关系进行了参与性验证试验，以使农民能够欣赏种植的储藏优势病毒测试材料。经过病毒检测的插条，每株长20厘米的Ejumula和Kabode品种均来自BioCrops私营部门实验室，并分别种植在四个不同地区的两个地点。在每个地区，两名农民主持了该试验，并且在每个站点中，该试验在2013-2014年连续四个季节重复了三次。收集了42天SPVD的收获前数据和种植后100天的收获前数据。病毒标定的种植材料产量为（15.0吨/公顷），农民自己的材料产量为（2.7吨/公顷），第四季-农作物种植（3.1吨/公顷），分别占根产量的82％和79％。 SPVD分数随循环数的增加而增加，而抗性和易感品种的储藏根产量均下降。最初经过病毒测试的种植材料和农民自家种植的材料在连续三个季节后，其视觉症状和贮藏根产量在视觉症状和贮藏根产量上均无显着差异（P≤0.05）。因此，建议在两个循环后冲洗。

S. NamandaR.O.M. MwangaS. MukasaD. TalengeraC. MusokeG. KyaloJ. LowG. SsemakulaS. MageziA.-M. Ball[1]. Sweetpotato virus pathogen-tested planting material of susceptible varieties results in root yield increase in Uganda[J]. Crop Protection, 2019,124