Effect of salicylic acid and irrigation intervals on hormonal content of leaves for five maize cultivars ( Zea mays L).

	Effect of salicylic acid and irrigation intervals on hormonal content of leaves for five maize cultivars ( Zea mays L).
journal of kerbala university
Article 1, Volume 11, Issue 1, 2015, Pages 161-181 PDF (0 K)
Abstract
This study was carried out during spring and fall growing seasons of 2013 in Alfayadah district –Alhindiya Kerbala governorate to study the effect of different concentration of SA, two periods of irrigation as well as their interaction on some morphological, physiological, water relationship ,concentrations of some hormones in leaves of maize plants. Maize cultivars treatments were Almaha , Buhooth ,Fajer ,Baghdad and Local .Factorial experiment within randomized complete block design ( R.C.B.D) was adopted (525) for SA, irrigation period and cultivars respectively with three replicates. Means were compared using LSD at 0.05 probability level . The 1st addition of SA was a foliar at 4-5 true leaves stage and the 2nd addition was one month after the 1st one (50%of male flowering ), Results revealed that plants hormones were significantily influenced by SA where higher concentrations of increased of IAA, GA3 & Cyt. during spring season at 200 mg/L SA giving 25 &132.52% & 101.36% respectively. Increasing the irrigation intervals, increased IAA by 8.68%,52.38% & 66.67% during the spring season . The percent increase of ABA was 18.04% during the spring season while it decreased by 16.17% during fall season.

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