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Effect of arbuscular mycorrhizae on phosphorus deficit stress during early development stage of basil (Ocimum basilicum L.)

Basil (Ocimum basilicum L.) is one of the most important and widely used medicinal and aromatic plants. Global decline in phosphate rock supplies as a non-renewable source of phosphorus (P) fertilizers represent challenge for the traditional agriculture which requires alternative approaches for P fertilization strategies. Phosphorus is one of the most important but least available plant nutrient in the soil, and P deficit often affects young plants with small root system. One of the widely spread adaptation to low P availability in terrestrial ecosystems is development of mycorrhizal associations. The aim of this study was to determine the effect of arbuscular mycorrhiza (AM) on early root growth, mineral content and photosynthetic efficiency among most used basil cultivars and varieties (‘Genovese’, ‘Sweet Basil’, ‘Dark Opal’ and var. purpurascens). AM-inoculated (with Rhizophagus irregularis) and AM-free basil accessions were grown for 60 days under low (1 μmol L-1) P concentration. Chlorophyll fluorescence measurements were conducted during growth period, and at the end of the experiment root morphological characteristics and shoot mineral content were determined.

basil, arbuscular mycorrhizae, root traits, chlorophyll fluorescence, mineral content

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