تأثير فترات السقي و المعاملة بتراكيز حامض البرولين و السالسيليك في بعض صفات شتلات السرو العمودي Cupressus Sempervirens Var Pyramidalis

Abstract EN

The study was carried out in the nursery of the Department of Forestry, College of Agriculture and Forestry, Mosul University, in 2018 with the aim of investigating the effect of exposure of the vertical cypress seedlings (Cupressus sempervirens var pyramidalis) to water stress through watering the seedlings for periods (1, 3, 7) days mg / L of )0 ,200,300(mg\L .)and the effect of spraying in different concentrations proline and salicylic acid in physical and chemical properties of cypress seedlings under water stress .The experimental study was carried out using a complete random design as a three-factor, three-replicate, 8-seedlings experimental unit.

The results were analyzed using SAS program and the averages were compared according to the Duncan polynomial test at a probability level (0.05).

The root length, root diameter and the number of secondary roots, the results showed that the period of watering every three days had a significant effect on the attribute of increase in stem length, stem diameter and the number of secondary roots while the watering period did not affect root length and root diameter .Interaction between Proline Acid Concentrations and Watering Periods Significantly Affected the Characteristics of Leg Length, Leg Diameter and Root Length While Not Affecting Root Diameter While Results Showed Bilateral Interaction Between Salicylic Acid Concentrations and Watering Periods Significantly While it did not affect the character of the length of the stem and root diameter, as regards the triple interactions between the concentrations of proline and salicylic acid with watering periods, the results showed the effect of triple overlap on the character of the length of the stem and root length, while it did not have an impact on the diameter .

.of the root diameter and the number of secondary roots.