Response of mycorrhizal hybrid tomato cultivars under saline stress

• J.-C Huang ^[1] ; W.-A Lai ^[1] ; S Singh ^[1] ; A Hameed ^[1] ; C.-C Young ^[1]
  1. [1] National Chung Hsing University

     National Chung Hsing University

     Taiwán

     
• Localización: Journal of soil science and plant nutrition, ISSN-e 0718-9516, ISSN 0718-9508, Vol. 13, Nº. 2, 2013, págs. 469-484
• Idioma: inglés
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• Resumen

  • The response of hybrid tomato cultivars (Solanum lycopersicumL. Cvs. TSS7 and TCAV10) inoculated with arbuscular mycorrhizal fungi Claroideoglomus etunicatum(AMF-1) and Funneliformis mosseae(AMF-2) under 2% saline stress was evaluated with regard to growth, yield, quality, nutrient acquisition, AMF colonization, relative permeability and soil properties in two potted plant experiments. Inoculation with AMF-2 caused a significant increase (~30%) in the fruit yield of TCAV10, particularly under saline stress. The highest tomato juice extraction ratio was achieved for TCAV10 treated with AMF-2. Under saline stress, TCAV10 inoculated with AMF-2 demonstrated significantly enhanced N, P, K and Ca content in fruits; N, K and Mg content in roots; and N, P and Ca content in shoots. Fruits of TSS7 and TCAV10 grown under saline stress coupled with AMF-2 treatment showed a significant decrease in Na content (23.6 and 31.1%, respectively) as compared with fruits of non-inoculated hybrid cultivars grown under saline stress. Residual Na in soil, AMF-2 colonization ratios and relative permeability were higher in TCAV10 inoculated with AMF-2 under saline condition compared with the non-inoculated treatments. TCAV10 inoculated with AMF-2 achieved higher fruit yield, quality and nutrient acquisition compared with the non-inoculated TCAV10. The results of this study are important for the selection of appropriate cultivars and microbial species for sustaining yield and quality under saline stress.