Variation in Seed Quality, Seedling Growth and Biomass Allocation of One-year-old Siberian Larch ( Larix sibirica Ledeb.) Seedlings Grown in Different Conditions from Diverse Seed Sources of Mongolia
The rehabilitation of degraded forests in Mongolia showed very low success and the total area reforested successfully represents only 5% of the total forest lost. One of the reasons for such poor results may be low quality of planting stock due to the poor quality of seeds. The objectives of this st...
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| Published in: | Mongolian journal of biological sciences Vol. 4; no. 2; pp. 15 - 23 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
National University of Mongolia
01-12-2006
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The rehabilitation of degraded forests in Mongolia showed very low success and the total area reforested successfully represents only 5% of the total forest lost. One of the reasons for such poor results may be low quality of planting stock due to the poor quality of seeds. The objectives of this study were to determine seed source variation in seed quality, to examine their growth and biomass allocation in one-year-old seedlings of Siberian larch from diverse seed sources, and to select the most promising seed sources for reforestation of degraded forest lands in Mongolia. Siberian larch seedlings from eight geographically different seed sources were grown at an open nursery and in greenhouse nursery conditions, and seedlings were subjected to growth and biomass allocation measurements at the end of the fi rst growing season. It was found that there were signi fi cant differences in seed quality, growth and biomass allocation among the seed sources in both growth conditions. Overall, Sources No.3 (Tuul river) and No.4 (Mungun) showed the best growth performances and biomass accumulation at open nursery and greenhouse nursery conditions, respectively. Source No.1 (Ovorkhangai) had the lowest performances in both growth conditions for all measured variables. On the other hand, seedlings grown in the greenhouse nursery conditions had more intensive growth and accumulated more biomass compared to seedlings grown in open nursery conditions. However, the proportion of biomass of the roots at open nursery grown seedlings was higher than that of greenhouse grown seedlings, which may indicate a more promising survival rate after fi eld transplanting. |
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| ISSN: | 1684-3908 2225-4994 |
| DOI: | 10.22353/mjbs.2006.04.11 |