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The Effect of Ac id and Alum inum Stress on Seed Germ ina tion andSeedling Growth of Pinus massoniana

  • Received Date: 2006-03-14
  • The effect of acid and aluminum stress on seed germination and seedling growth of Pinus m asson ianaLamb. was studied on the substrates of quartz sand by compounding nutritive liquid commonly used intensively inthe world. The result showed thatmedium intensity of acid and Al3+ did not have significant influence on germination rate and germinating ability, while they had significant negative influence on the growth of seedling root andstem. There was a significant correlation between the growth of root and stem, dryweight, fresh weightwith intensity of acid and Al3+ stress. The seedling growth increased slowly at first and then decreased with pH value changingfrom 5. 5 to 3. 0, the seedling growth decreased with the increase of Al3+ . The seedling growth was op timal in the pHvalue of 4. 5~5. 0. The acid and Al3+ stress had the biggest influence on root, and rootwas the most sensitive part.The percentage of biomass of root decreased with the increasing stress of acid and Al3+ , both stem and leave fluctuated lesser. When pH value was under 4. 5 of nutritive liquid, the concentration of Al3+ was 50 mg·L -1 , whichcould restrain the growth of P. m assoniana sp rout distinctly.
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    [2] 张健,李贤伟,胡庭兴. 铝毒害与森林衰退研究评述[J]. 世界林业研究, 1999, 12 (2) : 28~30

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    [5] 高吉喜,曹洪法. 马尾松苗期体内铝离子存在方式、形态和分布[J]. 环境科学, 1992, 13 (6) : 69~72

    [6] 杜晓明,刘厚田. 酸性土壤抗铝处理对土壤特性及马尾松苗木生长的影响[J]. 环境科学研究, 1994, 7 (2) : 55~58

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The Effect of Ac id and Alum inum Stress on Seed Germ ina tion andSeedling Growth of Pinus massoniana

  • 1. Institute of Sivilculture and Ecology, Guizhou University, Guiyang 550025, Guizhou, China
  • 2.  Research Institute of Trop ical Forestry, CAF, Guangzhou 510520, Guangdong, China

Abstract: The effect of acid and aluminum stress on seed germination and seedling growth of Pinus m asson ianaLamb. was studied on the substrates of quartz sand by compounding nutritive liquid commonly used intensively inthe world. The result showed thatmedium intensity of acid and Al3+ did not have significant influence on germination rate and germinating ability, while they had significant negative influence on the growth of seedling root andstem. There was a significant correlation between the growth of root and stem, dryweight, fresh weightwith intensity of acid and Al3+ stress. The seedling growth increased slowly at first and then decreased with pH value changingfrom 5. 5 to 3. 0, the seedling growth decreased with the increase of Al3+ . The seedling growth was op timal in the pHvalue of 4. 5~5. 0. The acid and Al3+ stress had the biggest influence on root, and rootwas the most sensitive part.The percentage of biomass of root decreased with the increasing stress of acid and Al3+ , both stem and leave fluctuated lesser. When pH value was under 4. 5 of nutritive liquid, the concentration of Al3+ was 50 mg·L -1 , whichcould restrain the growth of P. m assoniana sp rout distinctly.

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