EFFECT OF SITE CONDITION ON CAMBIAL ACTIVITY AND WOOD FORMATION OF YEW (TAXUS BACCATA) IN THREE REGIONS OF GOLESTAN PROVINCE

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MATINI BEHZAD H.; MASTRI FARAHANI M.R.; OLADI R.; HOSSEINI S.Z.; OVEN P.

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Journal: Journal of Wood and Forest Science and Technology Year:2016 | Volume:23 | Issue:SUPPLEMENT 2 Page(s): 261-277

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Title

EFFECT OF SITE CONDITION ON CAMBIAL ACTIVITY AND WOOD FORMATION OF YEW (TAXUS BACCATA) IN THREE REGIONS OF GOLESTAN PROVINCE

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Keywords

YEW (TAXUS BACCATA)Q1

CAMBIAL ACTIVITYQ1

WOOD FORMATIONQ1

GOLESTAN PROVINCEQ3

Abstract

Background and objectives: Yew (Taxus baccata) is one of the most valuable and rare native coniferous in Iran. Surviving remnants of third geological era that unfortunately it has been subjected to extinction due to the climate change and the excessive grazing. Regarding its valuable wood and lack of data toward the site impact on the tree growth, activities of cambium layer and procedure of an increase the number of mature cells were investigated.Materials and methods: Three regions of GOLESTAN PROVINCE (Afratakhteh, Chahar-bagh and Ponearam) were selected which among them Afratakhteh had the highest temperature.6 normal trees with upright trunks of each region and almost the same diameters for explanting were studied. Sampling was done from March to early November 2014, with two weeks interval. Micro-cores were examined under a light microscope after sectioning and staining. Then average number of cells in the cambium region and mature tracheids were counted. Climate data (precipitation and monthly temperature) were recorded for the meteorological stations near study area.Results: The results indicated that cambium activity was began two weeks earlier in Afratakhteh than others in early May and finished in late October at the same time in all sites. Cambium cells enumeration also showed that peak activity occurred in mid-June with 10 cells number. However, cambium activity started sooner in the warmer region (Afratakhteh) and cambium cells number was morethan other areas in early growth season. But, there were no differences in final mature tracheids among 3 sites in late growth season.Conclusion: It can be concluded that higher temperature in Afratakhteh has a positive effect on growth, in early growing season, but in the mid-summer, reduces cambium cells number and thus growth rate. This issue can create a negative impression on Afratakhteh Yew trees in near future, as air humidity decreases and become warmer.

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APA: Copy

MATINI BEHZAD, H., MASTRI FARAHANI, M.R., OLADI, R., HOSSEINI, S.Z., & OVEN, P.. (2016). EFFECT OF SITE CONDITION ON CAMBIAL ACTIVITY AND WOOD FORMATION OF YEW (TAXUS BACCATA) IN THREE REGIONS OF GOLESTAN PROVINCE. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 23(SUPPLEMENT 2), 261-277. SID. https://sid.ir/paper/156703/en

Vancouver: Copy

MATINI BEHZAD H., MASTRI FARAHANI M.R., OLADI R., HOSSEINI S.Z., OVEN P.. EFFECT OF SITE CONDITION ON CAMBIAL ACTIVITY AND WOOD FORMATION OF YEW (TAXUS BACCATA) IN THREE REGIONS OF GOLESTAN PROVINCE. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2016;23(SUPPLEMENT 2):261-277. Available from: https://sid.ir/paper/156703/en

IEEE: Copy

H. MATINI BEHZAD, M.R. MASTRI FARAHANI, R. OLADI, S.Z. HOSSEINI, and P. OVEN, “EFFECT OF SITE CONDITION ON CAMBIAL ACTIVITY AND WOOD FORMATION OF YEW (TAXUS BACCATA) IN THREE REGIONS OF GOLESTAN PROVINCE,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 23, no. SUPPLEMENT 2, pp. 261–277, 2016, [Online]. Available: https://sid.ir/paper/156703/en

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