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| Comparison of regeneration effect of different Populus varieties for stump grafting |
| (1.Beijing Daxing Forestry Workstation, 102600, Beijing; 2.Institute of Desertification Studies, CAF, 100091, Beijing: China) |
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Abstract In order to screen superior varieties to suit Populus regeneration by stump grafting, this paper chose 9 different Populus varieties, i.e., Populus×euramericana cl.Zhonglin038, Populus×euramericana cl. Zhonglin46, Populus×euramericana cv. Neva, Populus×euramericana cv.Guariento, Populus deltoides×Populus maximowiczii cv. Eridano, Populus×euramericana cl. Zhonglin2001, Populus deltoides cl. Zhonghe1, Populus alba×Populus glandulosa and Populus nigra cl. Shiji for stump grafting with Populus simonii as rootstocks, and compared the differences of the survival rates of rootstocks and scions, reservation rate and the average diameter at breast height, average tree height and average volume. The results showed that: 1) the survival rate and the reservation rate of Populus alba×Populus glandulosa were the lowest, while the survival rate and the reservation rate of other 8 Populus varieties were all higher than 80% and 90%. 2)The average diameter at breast height, the average tree height and the average volume of Populus alba×Populus glandulosa were the lowest as well. 3) The average diameter at breast height of Zhonglin2001, Neva, Guariento, Eridano, and Zhonghe1were bigger and there was no significant difference among them. The tree height of Eridano, Neva, Guariento and Zhonglin2001 were higher, and the difference among them was not significant. The average volume of Eridano, Neva, Guariento and Zhonghe1 were larger, and there was no significant difference between them. Comprehensively, Eridano, Neva, Guariento are superior varieties for suiting Populus afforestation by stump grafting.
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Received: 31 January 2013
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