Arbuscular mycorrhizal fungi action on the quality of strawberry fruits

ABSTRACT The inoculation of arbuscular mycorrhizal fungi (AMF), increasing the rhizospheric influence, might provide higher levels of bioactive compounds. Thus, the objective was to evaluate the influence of the AMF inoculation on the physicochemical components of fruit’s quality in field. Strawberry fruits from cultivars Camarosa, Aromas, Camino Real, Monterey, Portola, San Andreas and Albion in 2016, and Camarosa, Camino Real, Monterey and Albion in 2017 were either inoculated or non-inoculated with AMF. The analyzed physicochemical components of fruit’s quality were ascorbic acid, titrated acidity, pH, soluble solids, soluble solids/titrated acidity ratio, phenolic compounds, anthocyanins, and firmness. The inoculation with AMF on strawberry plants in field improved the fruit’s physicochemical attributes, increasing pH, soluble solids content, soluble solids/titratable acidity ratio and phenolic compounds content in both cultivation years (2016-2017). The inoculation of AMF has improved the characteristics of post-harvest quality in strawberry fruits.

摘要：丛枝菌根真菌（arbuscular mycorrhizal fungi, AMF）接种可强化根际效应，有望提升作物的生物活性物质含量。本研究旨在探究大田条件下接种AMF对草莓果实品质理化组分的影响。试验分别于2016年和2017年开展：2016年供试品种为Camarosa、Aromas、Camino Real、Monterey、Portola、San Andreas及Albion共7个草莓品种，2017年供试品种为Camarosa、Camino Real、Monterey及Albion 4个品种，每组均设置AMF接种处理与未接种对照组。本研究分析的果实品质理化指标包括抗坏血酸、可滴定酸度、pH值、可溶性固形物、可溶性固形物/可滴定酸度比值、酚类物质、花青素及果实硬度。结果表明，大田草莓植株接种AMF后，2016-2017两年间果实的pH值、可溶性固形物含量、可溶性固形物/可滴定酸度比值及酚类物质含量均显著提升，改善了果实理化品质。综上，AMF接种可优化草莓果实的采后品质特性。