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首页> 外文期刊>Acta Horticulturae >Ripening Delay and Fruit Drop Control in 'Imperial Gala' and 'Suprema' ('Fuji' Sport) Apples by Applying AVG (Aminoethoxyvinylglycine)
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Ripening Delay and Fruit Drop Control in 'Imperial Gala' and 'Suprema' ('Fuji' Sport) Apples by Applying AVG (Aminoethoxyvinylglycine)

机译：通过应用AVG（氨基乙氧基乙烯基甘氨酸）控制'Imperial Gala'和'Suprema'（'Fuji'Sport）苹果的成熟延迟和水果滴控制

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'Gala' and 'Fuji' represent more than 90% of the one million tonnes of Brazilian apples produced in 2004. Many orchards are larger than 50 ha, which results in many apples being picked at an inadequate ripening stage. This is especially true for 'Gala', because it ripens rapidly during commercial harvest time, and it is susceptible to pre harvest fruit drop. Experiments with 'Gala' and 'Fuji' were carried out in Fraiburgo (27° Latitude S), Santa Catarina State - Brazil, to evaluate the effect of theethylene biosynthesis inhibitor Aminoethoxyvinylglycine (AVG) on pre harvest fruit drop and harvesting delay. The 6 treatments were distributed in a completely randomized block design, with 10 replicates of one tree per plot. The treatments were: 1 - control (no AVG); 2 - AVG 124 g ha~(-1) applied 4 WBHT (Weeks Before Harvest Time); 3 - AVG 62 g ha~(-1) applied 4 WBHT + AVG 62 g ha~(-1) applied 2 WBHT; 4 - AVG 90 g ha~(-1) applied 2 WBHT; 5 - AVG 124 g ha~(-1) applied 1 WBHT; and 6 - AVG 90 g ha~(-1) applied 1 WBHT. The evaluations performed were percentage of fruit drop, harvest evolution, fruit color, fruit firmness, TSS, iodine-starch index, and fruit weight. AVG significantly delayed fruit ripening and reduced pre harvest fruit drop for 'Gala' apple. The beginning of the harvest was delayed 10 days, and the end happened 16 days later than in the check plots. The fruit drop control was effective up to 40 days after applying AVG. The more effective treatments in promoting harvest delay and fruit drop control were those applied closer to the harvest time, independently of the AVG concentration used. AVG increased fruit weight, and delayed the development of the fruit red color. The AVG had little effect on delaying 'Fuji' fruit ripening, but significantly reduced its water core incidence.
机译：2004年生产的100万吨巴西苹果中，“嘎拉”和“富士”占90％以上。许多果园的面积都超过50公顷，这导致许多苹果在成熟阶段采摘不足。对于'Gala'来说尤其如此，因为它在商业收获期会迅速成熟，并且容易受到收获前果实掉落的影响。在巴西圣卡塔琳娜州Fraiburgo（北纬27度）进行了“ Gala”和“ Fuji”实验，以评估乙烯生物合成抑制剂氨基乙氧基乙烯基甘氨酸（AVG）对收获前果实下降和收获延迟的影响。这6种处理方法以完全随机区组设计进行分配，每块地重复10棵一棵树。治疗方法为：1-对照（无AVG）; 2-AVG 124 g ha〜（-1）施用4 WBHT（收获时间前几周）; 3-施加4 WBHT的AVG 62 g ha〜（-1）+施加2 WBHT的AVG 62 g ha〜（-1）; 4-施加90 g ha〜（-1）的AVG 2 WBHT; 5-AVG 124 g ha〜（-1）施用1 WBHT; 6-AVG 90 g ha〜（-1）施用1 WBHT。进行的评估是落果百分比，收获进度，果实颜色，果实硬度，TSS，碘淀粉指数和果实重量。 AVG显着延迟了'Gala'苹果的果实成熟并减少了收获前的落果量。收获的开始被推迟了10天，收获的结束比检查地晚了16天。施用AVG后长达40天，水果滴的控制才有效。促进收获延迟和控制水果落落的更有效方法是在接近收获时间时使用，与所用AVG浓度无关。 AVG增加了果实的重量，并延迟了果实红色的发展。 AVG对延缓“富士”果实的成熟影响不大，但显着降低了其水核心发生率。

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