RESPONSE OF FOUR ZUCCHINI (Cucurbita pepo L.) HYBRIDS TO DIFFERENT ARBUSCULAR MYCORRHIZAL FUNGI
S. Sensoy, S. Demir*, S. Tufenkci**, Ç. Erdinç, E. Demirer*, H. Ünsal**, G. Halifeoglu, and A. Ekincialp
Department of Horticulture, *Department of Plant Protection, **Department of Soil Science and Plant Nutrition, Agriculture Faculty, Yüzüncü Yıl University 65080 Van, TURKEY
Corresponding author e-mail: suatsensoy@yyu.edu.tr
ABSTRACT
Four zucchini hybrids (Focus F1, Comet F1, Natali F1, and Ezra F1) inoculated by three different arbuscular mycorrhizal fungi (AMF) [Glomus intraradices (Gi), Glomus etinucatum (Ge), and Gigaspora margarita (Gm)] in a growth chamber experiment were evaluated for seedling traits, nutrient uptake, colonization, and relative mycorrhizal dependency (RMD). Relative mycorrhizal dependency ranged widely among four zucchini hybrids. Gm inoculations had higher positive RMDs, while Gi inoculations had lower negative RMDs. Gm-inoculated Focus F1 had the highest RMD (30.22 %). Arbuscular mycorrhizal fungi inoculated seedlings had wider cotyledons and stems. There were also significant effects of AMF inoculation on the most of nutrients.
Key words: AMF, colonization, nutrient uptake, relative mycorrhizal dependency symbiosis, zucchini.
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