女贞种子和幼苗对模拟酸雨的反应

doi:10.11707/j.1001-7488.20000622

Scientia Silvae Sinicae ›› 2000, Vol. 36 ›› Issue (6): 90-94.doi: 10.11707/j.1001-7488.20000622

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RESPONSES OF SEEDS AND SEEDLINGS OF　LIGUSTRUM LUCIDUM TO SIMULATED ACID RAIN

Fan Houbao,Zang Runguo,Kosuke Waki

Department of Resources and Environment, Fujian Forestry College Nanping 353001;Institute of Forest Ecology and Environmental Sciences, CAF Beijing 100091;Japan International Forestry Promotion and Cooperation Center Tokyo 112

Received:1999-01-13 Revised:1900-01-01 Online:2000-11-25 Published:2000-11-25

Abstract

Abstract: Observation and analysis were made on changes in morphology and physiology of seeds and seedlings of Ligustrum lucidum which were subjected to a simulated acid rain adjusted to different pH levels. The results showed that differences in germination rates were not statistically significant among the treatments, but pH2.0 and pH3.5 acid treatments were found to inhibit germination slightly. Under the exposure to pH2.0 treatment, seedling growth was severely retarded, due to the visible damage to foliage, decreased chlorophyll contents, elevated leaf cell permeability, and acidified leaf sap. While no significant morphological and physiological changes were observed, seedlings exhibited growth declines by pH3.5 treatment. Top growth was stimulated by pH5.0 acid treatment. No significant treatment effects were observed at pH 6.0.

Key words: Ligustrum lucidum, Simulated acid rain, Seed germination, Growth effect

Fan Houbao;Zang Runguo;Kosuke Waki. RESPONSES OF SEEDS AND SEEDLINGS OF　LIGUSTRUM LUCIDUM TO SIMULATED ACID RAIN[J]. Scientia Silvae Sinicae, 2000, 36(6): 90-94.

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RESPONSES OF SEEDS AND SEEDLINGS OF　LIGUSTRUM LUCIDUM TO SIMULATED ACID RAIN

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RESPONSES OF SEEDS AND SEEDLINGS OF LIGUSTRUM LUCIDUM TO SIMULATED ACID RAIN

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RESPONSES OF SEEDS AND SEEDLINGS OF　LIGUSTRUM LUCIDUM TO SIMULATED ACID RAIN