林业科学2013，Vol.49Issue(7)：158-162,5.DOI:10.11707/j.1001-7488.20130723
酸沉降胁迫对不同家系马尾松幼苗耐酸性的影响
Assessment of Acid-Tolerant Parameters of Different Pinus massoniana Families under Acid Deposition Stress
摘要
Abstract
The seedlings of 16 elite Masson pine (Pinus massoniana) families,with stable high-yield,including family 35,38,76,78,79,80,88,89,90,114,115,116,117,119,16,147,and 151,were used to explore the effects of precipitation acidity on their acid tolerance.The physiological parameters (biomass,relative plasma membrane permeability,chlorophyll) of the families cultivated in root-boxes outdoor were measured under treatments by spraying simulated acid rain at different pH values (2.5,3.5,4.5 and 5.6).The results showed that the biomass and chlorophyll content decreased with the increase of rain acidity,but the ratios of chlorophyll a/b increased with the increase of rain acidity.In addition,with the rain acidity increased,the relative plasma membrane permeability of the pine seedlings increased,suggesting that the injury of cell membrane was enhanced.These parameters varied with different P.massoniana families.Meanwhile,when rain pH decreased from 5.6 to 4.5,these parameters were slightly decline,but a significant decline was observed from pH 3.5 to 2.5,indicating that these pine families had relatively high productivity under mild acid environment at pH 4.5 to 5.6,and suggesting the tree species,Masson pine,would be suitable for being planted in mild acid soils.关键词
降水酸度/不同家系/马尾松/适酸性能Key words
rain acidity/ different families/ Pinus massoniana/ acid-tolerant parameters分类
农业科技引用本文复制引用
王水良,王平,许建华..酸沉降胁迫对不同家系马尾松幼苗耐酸性的影响[J].林业科学,2013,49(7):158-162,5.基金项目
国家自然科学基金面上项目(31270680) （31270680）
江苏省"六大高峰人才"资助项目(2011-XCL-018) （2011-XCL-018）
江苏高校优势学科建设工程资助项目. （）
