بررسی تاثیر محلول‌پاشی اسید‌آسکوربیک و اسید‌سالیسیلیک بر محتوای کلروفیل و کاروتنوئید گیاه کدو تخم کاغذی (.Cucurbita pepo L) تحت شرایط تنش کم‌آب

In order to study of the effect of Ascorbic acid and Salicylic acid Foliar on the physiological of the plant seeds paper pumpkin (Cucurbita pepo L.) on the condition of water deficit stress an experiment was conducted in a split factorial based on randomized complete block design with three replications at Research Station, Faculty of Agricultural, Shahrood University in year 2013. Treatments included three levels irrigation interval (6, 9, and 12 days) as the main plot, ascorbic acid, with three levels (zero, 15 and 30 Mm) and salicylic acid with 2 levels (zero and 0.4Mm) as sub plot. Aanalysis of variance showed that the interaction between irrigation interval and ascorbic acid significantly affected 100-seed weight, and also interaction between ascorbic acid and salicylic acid significantly affected weight pumpkin. That interaction between irrigation interval, ascorbic acid and salicylic acid significantly affected amount of number of grains per plant, chlorophyll total, carotenoids and the highest value chlorophyll total and carotenoids was obtained in 30 Mm ascorbic acid and 0.4 Mm salicylic acid foliar in non-stress conditions. The highest value number of grains per plant was obtained in 30 Mm ascorbic acid and 0.4 Mm salicylic acid foliar in non-stress conditions. also the highest value 100-seed weight was obtained in 30 Mm ascorbic acid foliar in mild-stress conditions.