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北缘油茶对不同海拔生境的生理响应
吴炜,高小明,胡娟娟,余云云,束庆龙
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(安徽省农业科学院农业工程研究所,合肥230031;合肥幼儿师范高等专科学校,合肥230013;皖西学院环境与旅游学院,六安237012;安徽农业大学林学与园林学院,合肥230036)
摘要:
为了了解油茶叶片生理指标对海拔高度变化的响应关系和规律,为北缘油茶的推广提供相应理论依据,以舒城县晓天镇海拔100 至800 m的油茶林为研究对象,分别测定其叶片细胞活性物质含量和活性,比较不同海拔油茶叶片生理生化指标的差异。结果表明,随着海拔从100 m上升到800 m,油茶叶片的MDA、Pro、可溶性糖含量分别提高了759.01%、294.39% 和40.93%;POD、CAT和SOD 3种酶活性分别提高了120.06%、165.32%和62.47%。油茶各项细胞生理活性物质指标与海拔高度相关性均达到极显著水平(P<0.01)。由此可见,油茶的内在抗逆性随海拔升高而得到显著提高。中国油茶栽培正在向北缘地区推进,在生产中可采取相应的措施,例如运用水、肥、光等条件的调控等抗逆性栽培技术,从而提高植株的抗寒性。
关键词:  油茶  海拔  生理指标  抗寒性
DOI:10.13610/j.cnki.1672-352x.20191013.022
基金项目:安徽省农业科学院院长基金(17B1321)和皖西学院2018年度校级自然科学研究项目(WXZR201802)共同资助。
Physiological responses of northern Camellia oleifera to the habitats in different altitudes
WU Wei,GAO Xiaoming,HU Juanjuan,YU Yunyun,SHU Qinglong
(Agricultural Engineering Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031;Hefei Preschool Education College, Hefei 230013;College of Environment and Tourism, West Anhui University, Lu’an 237012;School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036)
Abstract:
The relations between physiological indexes of Camellia oleifera leaves and altitudes were clarified to provide references for the popularization of “Northward C. oleifera”. We studied the activities and the contents of active substances in leaves of C. oleifera at 800 - 1 000 m altitudes in Shucheng County, Xiaotian Town, in order to compare the differences of physiological indexes between different altitudes. As altitude increased from 100 m to 800 m, the contents of malondialdehyde (MDA), proline (Pro) and soluble sugar in C. oleifera leaves rose by 759.01%, 294.39% and 40.93%, respectively, and the activities of peroxidase (POD), catalase (CAT) and superoxide dismutase (SOD) increased by 120.06%, 165.32% and 62.47%, respectively, indicating that the correlations between each cell physiological indexes of C. oleifera and altitudes were all at very significant levels (P < 0.01). The resistance of C. oleifera was significantly improved with the increasing altitude. A series of techniques in resistance cultivation, such as controlling the conditions of water, chemical fertilizer, light, etc., can be taken to improve the cold resistance, moving the C. oleifera cultivation in northern margin forward.
Key words:  Camellia oleifera  altitude  physiological indexes  cold resistance

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