Seasonal changes in dendrometer-derived stem variation in apple trees grown in temperate climate

IF 2 4区农林科学 Q2 AGRONOMY International Agrophysics Pub Date : 2022-09-02 DOI:10.31545/intagr/152037

Y. Rezaei, M. Zude-Sasse, W. Herppich

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引用次数: 1

Abstract

. Studies of daily changes in tree trunk diameter provide valuable information concerning growth patterns and their relationships with varying environmental conditions. To date, very few experiments with fruit trees evaluated the effects of climate variation on trunk shrinkage and the duration of the contraction and recovery phases and of growth. In this study, electronic dendrometers continuously monitored trunk diameter and trunk water storage dynamics of drip-irrigated ‘Gala’ apple trees ( Malus x domestica Borkh.) during three growing seasons, which differed significantly in temperature, precipitation, air humidity and solar irradiation. It was found that trunk diameter and meteorological variables were closely related, even when excluding the effects of soil water limitations. During each growing season, the durations of the daily contraction phase began to increase with increasing water vapour partial pressure deficit, and decreased again in autumn, when vapour partial pressure decreased. Throughout the season, the duration of the growth phase tended to change inversely to that of both contraction and recovery phase. The relationship between maximum trunk shrinkage and vapour partial pressure was higher post than preharvest for all years stud-ied. The duration of contraction, recovery, and growth phases may provide valuable information concerning seasonal changes and environmental drivers of water storage dynamics in apple trees.

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温带气候下苹果树树状茎变异的季节变化

树干直径的日变化研究提供了关于生长模式及其与不同环境条件的关系的有价值的信息。到目前为止，很少有果树实验评估气候变化对树干收缩、收缩和恢复阶段的持续时间以及生长的影响。在本研究中，电子树木密度计连续监测了滴灌“加拉”苹果树（Malus x domestica Borkh.）在三个生长季节的树干直径和树干蓄水动态，这三个季节在温度、降水、空气湿度和太阳辐射方面存在显著差异。研究发现，树干直径与气象变量密切相关，即使排除了土壤水分限制的影响。在每个生长季节，日收缩期的持续时间开始随着水蒸汽分压亏空的增加而增加，并在秋季蒸汽分压下降时再次减少。在整个季节中，生长期的持续时间往往与收缩期和恢复期相反。在所有年份中，采后树干最大收缩率与蒸汽分压的关系均高于采前。收缩、恢复和生长阶段的持续时间可以提供关于苹果树蓄水动态的季节变化和环境驱动因素的有价值的信息。

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来源期刊

International Agrophysics 农林科学-农艺学

CiteScore

3.60

自引率

9.10%

发文量

审稿时长

3 months

期刊介绍： The journal is focused on the soil-plant-atmosphere system. The journal publishes original research and review papers on any subject regarding soil, plant and atmosphere and the interface in between. Manuscripts on postharvest processing and quality of crops are also welcomed. Particularly the journal is focused on the following areas: implications of agricultural land use, soil management and climate change on production of biomass and renewable energy, soil structure, cycling of carbon, water, heat and nutrients, biota, greenhouse gases and environment, soil-plant-atmosphere continuum and ways of its regulation to increase efficiency of water, energy and chemicals in agriculture, postharvest management and processing of agricultural and horticultural products in relation to food quality and safety, mathematical modeling of physical processes affecting environment quality, plant production and postharvest processing, advances in sensors and communication devices to measure and collect information about physical conditions in agricultural and natural environments. Papers accepted in the International Agrophysics should reveal substantial novelty and include thoughtful physical, biological and chemical interpretation and accurate description of the methods used. All manuscripts are initially checked on topic suitability and linguistic quality.