کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5515357 1541905 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research articlePotential link between fruit yield, quality parameters and phytohormonal changes in preharvest UV-C treated strawberry
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Research articlePotential link between fruit yield, quality parameters and phytohormonal changes in preharvest UV-C treated strawberry
چکیده انگلیسی


- Marketable yield was not affected by the preharvest UV-C treatments.
- Firmness, sugars, acids and volatile compounds were affected differentially by the treatments.
- ABA and GA3 were enhanced by low and middle doses while SA was reduced by the high dose.
- Attempts were made to established physiological links between quality and phytohormonal changes.

Preharvest ultraviolet-C (UV-C) treatment of strawberry is a very new approach, and little information is available on the effect of this treatment on plant growth regulators. In this study, the effect of preharvest UV-C irradiations at three different doses on strawberry yield, fruit quality parameters and endogenous phytohormones was investigated simultaneously. The overall marketable yield of strawberry was not affected by the preharvest UV-C treatments, although more aborted and misshapen fruits were found in UV-C treated groups than in the untreated control. The fruits in the high dose group were firmer and had approximately 20% higher sucrose content and 15% higher ascorbic acid content than the control, while fruits from the middle and low dose groups showed no significant changes in these parameters. The lower abscisic acid (ABA) content found in the fruits in the high UV-C group may be associated with those quality changes. The citric acid content decreased only in the low dose group (reduction of 5.8%), with a concomitant 37% reduction in jasmonic acid (JA) content, compared to the control. The antioxidant status of fruits that received preharvest UV-C treatment was considered enhanced based on their oxygen radical absorbance capacity (ORAC) and malondialdehyde (MDA) content. In terms of aroma, three volatile alcohols differed significantly among the various treatments with obvious activation of alcohol acyltransferase (AAT) activity. The observed synchronous influence on physiological indexes and related phytohormones suggests that preharvest UV-C might affect fruit quality via the action of plant hormones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 116, July 2017, Pages 80-90
نویسندگان
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