Drought stress response in caucasian hackberry: growth and morphology
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 3
Abstract
In order to evaluate the effect of drought stress on Celtis caucasica Willd seedlings, the research was conducted based on completely randomized design on summer season. On the watering regimes (2th and 4th day after drought), the morphological-related parameters were measured. Traits were measured including: height, diameter, leaf number, leaf area, shoot and root length, freshly and number of root, fresh and dry weight of roots, stem and leaf and ratios of root to shoot, leaf to shoot, leaf area, specific leaf area and leaf weight. Results indicated those terms of height seedling after fortieth day significant at the 5% level and 1% level at the end of growth period under the drought conditions. Average height, number of leaves, leaf area in the second and third months, shoot dry weight, shoot length and leaf area ratio in the drought treatment showed a of 5% significant and the number of leaves was significant at thirtieth and fortieth day by stress condition. Since the fiftieth day to the end of summer this term indicated significantly at 1% probability level. The result of repeated measures analysis showed no significant difference in height between the control treatment and drought stress, but the diameter, number of leaves and leaf area of significantly indicated at the 5% level. Principal component analysis showed that in first axis in drought stress reduced leaf area ratio and specific leaf area and second axis total dry weight increase and leaf to shoot ratio decrease were the most important traits.
Authors and Affiliations
Sayed Abdolhossein Tabatabaei, Hamid Jalilvand, Hamid Ahani
Keywords
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