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首页> 外文期刊>Acta Horticulturae >Pistachio inflorescence bud abscission dynamics as a function of embryo weight, crop load and vegetative growth
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Pistachio inflorescence bud abscission dynamics as a function of embryo weight, crop load and vegetative growth

机译：开发虫花序芽脱落动态作为胚胎重量，作物负荷和营养生长的函数

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摘要

Alternate bearing in pistachio [Pistacia vera L.) is particularly severe. The developing nuts are a major sink, draining branch carbohydrates, producing inflorescence bud abscission and decreasing the following year's production. We investigated inflorescence bud drop as a function of branch crop load, embryo weight, and vegetative growth. The main objective of this study was to investigate the mechanism of alternate bearing. We also tested the efficacy of eight different foliar nutrient combinationsfor reducing inflorescence bud abscission: Acadian A LSC~R, Acadian B, low-biuret urea, Acadian A LSC~R + low-biuret urea, Acadian B + low-biuret urea, MaxCell~R, MaxCell~R + low-biuret urea, and untreated control (sprayed with water). The trial was conducted during the 2016 growing season on eight-year-old Kerman pistachio trees planted at 5.2 m in-row and 6.1 m between rows, on PG1 rootstock, 8 replications for each treatment. Average tree yields as dry in-shell marketable split nuts were not significantly different among treatments ranging from 27 to 31 kg tree1). The treatment did not affect inflorescence bud abscission. The bud abscission percentage was significantly higher in bearing branches (~70%) versus non-bearing branches (~15%). In fruiting shoots, the percentage of inflorescence bud abscission was significantly and positively correlated with embryo growth. Length, width and weight of new wood and one-year-old wood correlated significantly and positively with nut production, and negatively with inflorescence bud abscission. The data collected support the hypothesis suggested in the literature that alternate bearing is function of crop load and carbohydrate depletion. Results reported here are the first step toward characterization of optimal shoot parameters, length, width and leaf area, for optimal and regular crop production.
机译：在开心[Pistacia Vera L.）中的交替轴承特别严重。显影螺母是一个主要的水槽，排放碳水化合物，产生花序芽脱落和降低持续的产量。我们调查了花序芽作为分支作物负荷，胚胎重量和植物生长的函数。本研究的主要目的是研究交替轴承的机制。我们还测试了八种不同叶状营养素组合的疗效，降低了花序芽脱落：Acadian A LSC〜R，Acadian B，低生物脲尿素，Acadian A LSC〜R +低生物脲尿素，Acadian B + Low-Biurecet尿素，Maxcell 〜R，MaxCell〜R +低伯脲尿素，并未治疗控制（用水喷涂）。在2016年在2016年的八十岁的克尔曼开心果树上进行了审判，在5.2米的连续和6.1米之间，在PG1砧木，每次治疗的8次复制中。在27至31公斤树的处理范围内，平均树脂在壳牌营销性分裂螺母中没有显着差异。治疗不影响花序芽脱落。患芽脱落百分比明显高于轴承分支（〜70％）与非轴承分支（〜15％）。在结果芽中，花序芽脱落的百分比与胚胎生长显着且呈正相关。新木材的长度，宽度和重量和一岁木材显着且积极地与螺母产生呈积极相关，并且对花序芽脱落的负面影响。收集的数据支持的假设在文献中建议，交替轴承是作物载荷和碳水化合物耗尽的作用。结果报告的结果是朝着最佳拍摄参数，长度，宽度和叶面积进行表征的第一步，以实现最佳和常规作物生产。

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