Effect of foliar application of ascorbic acid and methanol on dry matter accumulation and yield of soybean cultivars (DPX) under water deficit conditions

Subject Areas : Journal of Plant Ecophysiology

N. Ghanbari Tilami ¹ , H. Abasspour ² , M. Baradaran Firouz Aabady ³

1 - دانشجوی کارشناسی ارشد، دانشگاه آزاد اسلامی واحد دامغان
2 - استادیار دانشگاه آزاد اسلامی واحد دامغان
3 - استادیار دانشگاه صنعتی شاهرود

Received: 2014-09-24 Accepted : 2014-09-24 Published : 2014-09-01

Keywords: Yield, stiffness, bean oil, growth charectristics, Growth Regulators,

Abstract :

Today, the use of plant growth regulators to reduce the negative impacts of stress has been proposed. Ascorbic acid and methanol as these materials can cause stress tolerance in plants. In 1391, in order to examine this issue in soybean, a split factorial experiment was done in a randomized complete block design with three replications at the Agricultural Research Center of shahrood. The main factor included 2 levels of irrigation (8 days and 16 days) and sub factors included three levels of foliar application of ascorbic acid (zero, 10 and 20 mM), and methanol (zero, 10 and 20% by volume). Results showed that the effect of foliar application of ascorbic acid and methanol on plant dry weight was significant. By increasing concentrations of ascorbic acid and methanol, their value increased. Combination of 20% by volume of methanol and 20 mM ascorbic acid increased concentrations of methanol and ascorbic acid and number of seeds per pod. Treatment combination of 20% by volume of methanol and 20 mM ascorbic acid, under irrigation in 8 days increased 70/105 percent oil yield relative to control plants. Maximum protein yield with 12/116 kg ha was related to treatment combination of 20 Mm ascorbic acid and 20% methanol by volume under irrigation in 8 days.