Does the application of growth bioregulators improve the foliar concentration of nutrients, non-structural carbohydrates and yield in pecan?

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Ciencia E Agrotecnologia Pub Date : 2021-06-25 DOI:10.1590/1413-7054202145004721

Laura Raquel Orozco Meléndez, O. A. H. Rodríguez, O. C. Alvarez, A. Mendoza, Marisela Calderón Jurado, Damaris Leopoldina Ojeda Barrios

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引用次数: 2

Abstract

ABSTRACT Carya illinoinensis (Wangenh.) K. Koch. is a deciduous fruit species with high economic impact and nutritional value that exhibits alternate bearing behavior. In this study, the concentration of foliar nutrients, non-structural carbohydrates and yield were evaluated in cultivar Western Schley pecan in response to the foliar application of gibberellic acid (50 mg L-1 GA3), prohexadione calcium (500 mg L-1 PCa) and thidiazuron (10 mg L-1 TDZ).The statistical analysis reveals that between agricultural cycles, the treatments showed no variation in the foliar concentration of nitrogen total (N-total), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), copper (Cu), manganese (Mn) and non-structural carbohydrates (fructose, glucose, sucrose and starch). However, the application of PCa showed no significant effect on the concentration of phosphorus (P) (1.5 and 1.9 g kg-1). On the other hand, the concentration of zinc (Zn) (27.0-60.1 mg kg-1) showed a significant difference between years, with no effect due to the application of growth bioregulators. The trees treated with GA3 minimized alternate bearing by presenting similar values (12.4 and 15.3 kg tree-1) of yield. Likewise, the applied treatments did not affect the nut weight per kilogram (kg) (5.5-6.8 g) and kernel percentage (56.5-60.8). These data provide a new perspective on the complex nature of alternate bearing production in cultivar Western Schley pecan and are interpreted to indicate that alternate production could be regulated by carbohydrate reserve, nutrient concentration, and gibberellins.

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生长生物调节剂的应用是否能提高山核桃叶片中营养物质、非结构性碳水化合物的浓度和产量？

摘要：Carya illinoinensis（Wangenh）K.Koch。是一种具有较高经济影响和营养价值的落叶果树，表现出交替结果的行为。在本研究中，对品种Western Schley山核桃在叶面施用赤霉素（50 mg L-1 GA3）、前己二酮钙（500 mg L-1 PCa）和噻二唑仑（10 mg L-1 TDZ）时的叶面营养物质、非结构碳水化合物浓度和产量进行了评估。统计分析表明，在农业周期之间，处理的叶片总氮（N-total）、钾（K）、钙（Ca）、镁（Mg）、铁（Fe）、铜（Cu）、锰（Mn）和非结构碳水化合物（果糖、葡萄糖、蔗糖和淀粉）的浓度没有变化。然而，施用PCa对磷（P）浓度（1.5和1.9 g kg-1）没有显著影响。另一方面，锌（Zn）的浓度（27.0-60.1 mg kg-1）在不同年份之间显示出显著差异，但由于生长生物调节剂的应用而没有影响。用GA3处理的树木通过表现出相似的产量值（12.4和15.3 kg树-1）来最小化交替结果。同样，施用的处理没有影响每公斤坚果重量（5.5-6.8克）和籽粒百分比（56.5-60.8）。这些数据为品种西施利山核桃的交替结果生产的复杂性提供了一个新的视角，并被解释为表明交替生产可能受碳水化合物储备、营养浓度和赤霉素的调节。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ciencia E Agrotecnologia 农林科学-农业综合

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.