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Influence of Ectomycorrhiza on Nutrient Absorption of Pinus massoniana Seedlings Under Water Stress

  • Received Date: 2012-02-05
  • The effect of ectomycorrhiza on nutrient absorption of potted seedlings of Pinus massoniana under water stress was studied in greenhouse, by inoculating Pisolithus tinctorius, Cenococcum geophilum, Cantharellus cibarius Fr., Suillus luteus(L.:Fr.) Gray respectively. The results showed that ectomycorrhiza could significantly improve the absorption of content of N, P and K in drought stress. The contents of N, P and phosphatase activities of mycorrhizal seedling increased at first and then decreased with the water stress increase, and reached the maximum in moderate stress. The seedling of inoculation Suillus luteus1 had the best absorption to N, P, and increased 56.65% and 44.32% respectively compared to control group. The content of K in mycorrhizal seedling inoculating Pisolithus tinctorius and Suillus luteus1 increased at first and then decreased with the increase of water stress, and reached the maximum in the light stress. They increased by 222% and 119% respectively compared to the control group. N and K mainly distributed in the leaf, while P equally distributed in root, stem and leaf. The formation of mycorrhizal benefited the transportation of N and K upward. Inoculating Suillus luteus1 in mild and moderate stress had the best comprehensive effect in absorption and content of N, P and K, and at the same time it could promote seedling growth and enhance seedling drought resistance.
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Influence of Ectomycorrhiza on Nutrient Absorption of Pinus massoniana Seedlings Under Water Stress

  • 1. Institute of Forestation and Ecology, Guizhou University, Guiyang 550025, Guizhou, China

Abstract: The effect of ectomycorrhiza on nutrient absorption of potted seedlings of Pinus massoniana under water stress was studied in greenhouse, by inoculating Pisolithus tinctorius, Cenococcum geophilum, Cantharellus cibarius Fr., Suillus luteus(L.:Fr.) Gray respectively. The results showed that ectomycorrhiza could significantly improve the absorption of content of N, P and K in drought stress. The contents of N, P and phosphatase activities of mycorrhizal seedling increased at first and then decreased with the water stress increase, and reached the maximum in moderate stress. The seedling of inoculation Suillus luteus1 had the best absorption to N, P, and increased 56.65% and 44.32% respectively compared to control group. The content of K in mycorrhizal seedling inoculating Pisolithus tinctorius and Suillus luteus1 increased at first and then decreased with the increase of water stress, and reached the maximum in the light stress. They increased by 222% and 119% respectively compared to the control group. N and K mainly distributed in the leaf, while P equally distributed in root, stem and leaf. The formation of mycorrhizal benefited the transportation of N and K upward. Inoculating Suillus luteus1 in mild and moderate stress had the best comprehensive effect in absorption and content of N, P and K, and at the same time it could promote seedling growth and enhance seedling drought resistance.

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