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首页> 外文会议>International citrus congress >Assessing the Efficacy of Preharvest Treatments to Control Water Spot in Clementine (Citrus reticulata Blanco)
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Assessing the Efficacy of Preharvest Treatments to Control Water Spot in Clementine (Citrus reticulata Blanco)

机译：评估预征治疗对克莱门汀水分（柑橘reticulataBlanco）的疗效

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In Italy the damage caused by water spot to the crop of Clementine mandarin is a cause of increasing concern to the citrus industry. The injury occurs during cold rainy periods in winter and the progress of disease depend on weather conditions. It is a typical disorder linked to peel senescence. This disorder can be partially controlled by application of gibberellic acid at fruit color break. Field trials were conducted in the fall of 2006 and 2007 in a commercial plantation of Clementine located at Mirto Crosia (Italy). Individual trees of good health, uniform size and yield were selected and tagged for use in the experiments. Treatments selected for evaluation were: 1)GA3 10 ppm; 2) Beeswax; 3)Chitosan 0. 5% ; 4) GA3 10 ppm followed (15 days later) by Beeswax; 5) Chitosan 0. 5% followed (15 days later) by Beeswax; 6) GA3 10 ppm plus Chitosan 0. 5% ; 7) Untreated control. Each treatment was applied to five single tree replicates. In order to evaluate the effect of treatments on the fruit quality, initially (at treatment) and at 1 month interval until harvest, physicochemical parameters were determined on samples of 20 fruits for each treatment. Incidence and severity were determined on all fruits harvested per tree. Although not statistically significant, GA3 Beeswax and Chitosan reduced the disorder, compared to the untreated control. At harvest fruit treated with GA3 Beeswax, and GA3followed by Beeswax had statistically higher firmness and lower deformation. No statistically significant differences were found in all other physicochemical parameters. The role of weather conditions on the incidence of disorder is discussed.
机译：在意大利在意大利对柑橘普通话作物造成的损害是柑橘行业越来越多的原因。在冬季寒冷的多雨期间发生伤害，疾病的进展取决于天气条件。它是与剥离衰老有关的典型疾病。该疾病可以通过在果实色断裂中施用甘油酸来部分控制。现场试验是在2006年和2007年秋季进行的，位于Mirto Crosia（意大利）的克莱门汀商业种植园。选择良好健康，均匀尺寸和产量的个体树木，并标记用于实验。选择评价的治疗是：1）GA3 10 ppm; 2）Beeswax; 3）壳聚糖0. 5％; 4）GA3 10 ppm遵循（15天后）byeswax; 5）壳聚糖0.蜂蜡中的5％（15天）用蜂蜡; 6）GA3 10 ppm加壳聚糖0. 5％; 7）未经处理的控制。将每种处理应用于五棵树重复。为了评估治疗对果实质量的影响，最初（治疗）和1个月间隔直至收获，在每种处理的20个果实样品上测定物理化学参数。在每棵树收获的所有水果上确定发病率和严重程度。虽然没有统计学意义，但与未处理的对照相比，Ga3蜂蜡和壳聚糖减少了这种疾病。在用GA3蜂蜡处理的收获果实，通过Beeswax的Ga3偏移具有统计上更高的坚固性和更低的变形。在所有其他物理化学参数中发现了没有统计学意义的差异。讨论了天气条件对疾病发病率的作用。

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