Investigation on adaptation and growth characteristics of different closed-crown poplar clones under climatical conditions of Khorram Abad

Document Type : Research article

Authors

1 Research Expert, Research Division of Natural Resources, Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Khorram Abad, Iran

2 Assistant Prof., Research Division of Natural Resources, Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Khorram Abad, Iran

3 Senior Research Expert, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

4 Associate Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

Abstract

    In order to identify the most productive and adaptable clones to local climate and introduce them to people for mass wood production, ten clones of Populus nigra L. were selected and were planted in Khorram Abad Agricultural Garden Station for five years (2010-2014). Variance analysis showed that the year and cologne factors had a significant impact on height, diameter, and volume increment. The result of mean comparisons showed that the highest (2.05 m) and lowest (0.14 m) of height increment were dedicated to P. nigra 63/135 clone in the fourth year and P. nigra 56/48 clone in the second year, respectively. Also the P. nigra 63/135 clone had the maximum diameter increment (2.57 cm) in the fifth year (2014) and P. nigra 56/48 clone had the minimum diameter increment in the second year. The P. nigra 63/135 and P. nigra 62/154 clones had the highest (7.18 cm) and lowest (0.4 cm) of volume increment in the fifth year, respectively. The qualitative study of different P. nigra clones showed that except for the P. nigra 56/72 and P. nigra 49/23clones which had low and moderate curved trunks, respectively, the other clones had smooth and straight trunks.

Keywords

References

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Iranian Journal of Forest and Poplar Research
Volume 26, Issue 4 - Serial Number 74
January 2019
Pages 471-482

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