مشخصات پژوهش

عنوان	Effect of integrated application of phosphorus, and phosphate solubilizing microorganisms on root colonization, productivity and seed quality of Cucurbita pepo L.
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Cucurbita pepo L., fertilizer, linoleic acid, mycorrhiza fungi, oil percentage, symbiosis
چکیده	Pumpkin (Cucurbita pepo L.) is an important and valuable medicinal plant for its seeds. Phosphorus is a major nutrient which its deficiency limits plant growth. This investigation was aimed at studying sources integrated application of phosphorus supply on growth and production of Pumpkin. Co-inoculation of phosphate solubilizing microorganisms (PSM) (mycorrhiza and bacteria) with and without seed inoculations, and P chemical fertilizer at 0, 25%, 50%, 75% and 100% of recommended fertilizer were applied. Hence, a factorial experiment was done based on randomized complete block design with three replications. Data indicate that PSM and P fertilizer show significant effects on all traits. Maximum oil yield (41.80 g m-2) and linoleic acid (68.30 %) were obtained with applying PSM and consuming 50% of the recommended P fertilizer. Seed yield was significantly increased in response to inoculation of PSM in the presence of low levels of P fertilizer. However, maximum mycorrhizal colonization obtained in 25% recommended P fertilizer. A high level of P fertilizer has a negative effect on the activity of PSM. On the other hand, a low level of phosphorus with PSM has a simulative impact on root colonization and productivity of Pumpkin and favors the activities of PSM.
پژوهشگران	جواد حمزه ئی (نفر اول)، سعید نجاری (نفر دوم)