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首页> 外文期刊>Plant disease management reports PDMR >Evaluation of 15 potato varieties most widely grown in China for Resistance to Late Blight
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Evaluation of 15 potato varieties most widely grown in China for Resistance to Late Blight

机译：评价中国最广泛种植的15种马铃薯对晚疫病的抗性

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摘要

China's 15 most widely cultivated varieties of potato were compared for late blight resistance in Xundian County, Yunnan (SW China), at an elevation of about 2500_m. The soil in the experimental plot is a yellow-red inceptisol. The trial was planted just before the primary potato growing season (May-October), which has an average precipitation of 900 mm and a temperature range of 12-24°C. Seed tubers were planted in a randomized block design in early April 2013, fertilized with ammonium bicarbonate,superphosphate, potassium sulfate and manure, and irrigated prior to emergence. Plots comprised 4 rows of 12 tubers each and were planted in three replicate blocks. Spacing was 0.8 m between rows and 0.3 m between plants. Percentage infection in each plot (experimental unit) was estimated visually and recorded weekly for four weeks, beginning on the first day that infection was observed in the field on Jul 2. Area under disease progress curve (AUDPC) values were calculated for each experimental unit and then converted to the 1-9 resistance scale of Yuen and Forbes (2009, Phytopathology 99:783-786), using cv. Favorita as the susceptible check, with an assigned score value of 9. ANOVA was used to test for a significant difference among varieties and means were compared with the LSD.
机译：在云南省寻甸县（中国西南），比较了中国15个最广泛栽培的马铃薯品种的抗晚疫病性（海拔2500_m）。实验区的土壤是黄红色的受体醇。该试验是在马铃薯初级生长季节（5月至10月）之前进行的，该季节的平均降水量为900毫米，温度范围为12-24°C。 2013年4月上旬，将种子块茎按随机分组设计进行种植，并用碳酸氢铵，过磷酸钙，硫酸钾和肥料施肥，并在出苗前进行灌溉。地块包括4行，每行12个块茎，并种植在三个重复的块中。行之间的间距为0.8 m，植物之间的间距为0.3 m。从7月2日在田间观察到感染的第一天开始，目测评估每个试验区（实验单位）中的感染百分比，并每周记录四周，计算每个实验单位的疾病进展曲线下面积（AUDPC）值然后使用cv将其转换为Yuen and Forbes（2009，Phytopathology 99：783-786）的1-9抵抗等级。 Favorita是易感性检查，指定的得分值为9。使用ANOVA检验品种之间的显着差异，并将均值与LSD进行比较。

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