Impacts of soil humidity and shade on growth and biomass allocation of wild pistachio (Pistacia atlantica Desf.) saplings | ||
| تحقیقات جنگل و صنوبر ایران | ||
| Article 9, Volume 24, Issue 2 - Serial Number 64, June 2016, Pages 283-273 PDF (161.3 K) | ||
| Document Type: Research article | ||
| DOI: 10.22092/ijfpr.2016.106990 | ||
| Authors | ||
| Mohammad Hossein Sadeghzadeh Hallaj* 1; Davoud Azadfar2; Hossein Mirzaei Nodoushan3; Mohammad Hossein Arzanesh4; Masoud Tohidfar5 | ||
| 1Ph.D. Student Forest Ecology, Gorgan University of Agricultural Sciences and Natural Resources | ||
| 2Associate Prof., Department of Silviculture and Forest Ecology, Grogan University of Agricultural Sciences and Natural Resources | ||
| 3Prof., Research Institute of Forest and Rangelands, Agricultural Research, Education and Extension Organization (AREEO) | ||
| 4Assistant Prof., Research Division of Soil and Water, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization | ||
| 5Associate Prof, Department of Biotechnology Engineering, Faculty of New Technologies and Energy Engineering, Shahid Beheshti University | ||
| Abstract | ||
| A study on the impacts of soil humidity and artificial shading on growth, biomass production and its allocation to different organs of wild pistachio (Pistacia atlantica Desf.)saplings was carried out in Alborz research station complex (Karaj, Iran). One year seedlings were treated by soil humidity (20, 50 and 100 percent of field capacity) and shading (100, 70 and 50 percent of full sunlight) factors in a split plot experiment based on a randomized complete block design from June to December 2014. Results showed significant impact of oil humidity on height, collar diameter, fresh and dry biomass of leaves and stem as well as on total fresh biomass. Shade significantly decreased height, root and total dry biomass and root to shoot fresh biomass ratio. Moreover, wild pistachio saplings with different soil humidity treatments show different responses to shade. In particular, shade significantly decreases height, fresh leaves biomass and R/S fresh biomass ratio for well-irrigated saplings and increases these parameters for saplings under drought stress. Response trends of different parameters under humidity × shade treatments showed that shade can reduce undesirable effects of drought stress on wild pistachio saplings. | ||
| Keywords | ||
| height; organ; Pistacia atlantica; biomass; Collar diameter | ||
| References | ||
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