Seedling production of natural hybrid of poplar trees and usage them in comprehensive program of wood farming

Lashkarbolouki, Ebrahim; Kahneh, Ehsan

Seedling production of natural hybrid of poplar trees and usage them in comprehensive program of wood farming

Document Type : Scientific article

Authors

¹ Research instructor, Forests and Rangelands Research Department, Agricultural and Natural Resources Research and Education Center, Rasht

² Master of Research, Forests and Rangelands Research Department, Agricultural and Natural Resources Research and Education Center, Rasht

Abstract

Large demand of wood and restrictions on the efficiency forest’s wood production caused attention to fast growing trees poplars. Poplar genus trees because of dioecious, have insemination ability and hybridization that wood production of them are more than their parents that known as heterosis phenomena. The most properties of this hybrids are fast grow, smooth and cylindrical trunk for having a flexibility ecological and significant resistance against pests and diseases. In order to select superior varieties of hybrid poplar, four consecutive years of collection poplar clones that are growing on the bank of Sefidroud river have growing strong form that have longitudinal and diametrical growth than the others, cuttings were prepared. They planted in the nursery that already had been prepared for this purpose. Also, from female clone (P.d.69.55) in ripping seeds were collected and they were regenerated and planted in chassis greenhouse and then transferred to fields and planted. Analyze of data were done by analysis of variance for variables and variables mean comparison were done in SAS software by LSD test. The results of this research identified 13 hybrids clones of poplar with two base cutting (preparation of Sefidroud river bank) and seed (the seeds that collected and planted from deltoides clone). Selected clones in comparison with control clone (P.d.69/55) that had superior characteristics, were distinguished. Hybrid clones with superior diameter growth were: P.x.87.1.S, P.x.89.3.C, P.x.88.4.C, P.x.88.5.Cand superior height growth P.x.88.1.S, P.x.89.3.C.

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