Ji Tao, Languasco Luca, Li Ming, Rossi Vittorio
Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via E. Parmense 84, 29122 Piacenza, Italy.
National Engineering Research Center for Information Technology in Agriculture (NERCITA)/National Meteorological Service Center for Urban Agriculture, China Meteorological Administration & Ministry of Agriculture and Rural Affairs, Beijing 100097, China.
Plants (Basel). 2021 Aug 18;10(8):1696. doi: 10.3390/plants10081696.
Grapevine white rot, caused by , can severely damage berries during ripening. The effects of temperature and wetness duration on the infection severity of were investigated by artificially inoculating grape berries through via infection pathways (uninjured and injured berries, and through pedicels). The effect of temperature on incubation was also studied, as was that of inoculum dose. Injured berries were affected sooner than uninjured berries, even though 100% of the berries inoculated with conidia became rotted whether injured or not; infection through pedicels was less severe. On injured berries, the disease increased as the inoculum dose increased. Irrespective of the infection pathway, 1 h of wetness was sufficient to cause infection at any temperature tested (10-35 °C); with the optimal temperature being 23.8 °C. The length of incubation was shorter for injured berries than for uninjured ones, and was shorter at 25-35 °C than at lower temperatures; the shortest incubation period was 14 h for injured berries at 30 °C. Mathematical equations were developed that fit the data, with R = 0.93 for infection through any infection pathway, and R = 0.98 for incubation on injured berries, which could be used to predict infection period and, therefore, to schedule fungicide applications.
由[病原菌名称未给出]引起的葡萄白腐病，在葡萄成熟期间会严重损害浆果。通过经由感染途径（未受伤和受伤的浆果以及通过果梗）人工接种葡萄浆果，研究了温度和湿润持续时间对[病原菌名称未给出]感染严重程度的影响。还研究了温度对接种潜伏期的影响以及接种剂量的影响。受伤的浆果比未受伤的浆果更早受到影响，尽管接种了[病原菌名称未给出]分生孢子的浆果无论是否受伤，100%都会腐烂；通过果梗的感染不太严重。在受伤的浆果上，病害随着接种剂量的增加而加重。无论感染途径如何，1小时的湿润在任何测试温度（10 - 35℃）下都足以引起感染；最佳温度为23.8℃。受伤浆果的潜伏期比未受伤的浆果短，并且在25 - 35℃下比在较低温度下短；在30℃时，受伤浆果的最短潜伏期为14小时。建立了符合数据的数学方程，通过任何感染途径的感染的相关系数R = 0.93，在受伤浆果上潜伏期的相关系数R = 0.98，这些方程可用于预测感染期，从而安排杀菌剂的施用时间。
