江汉平原地区3种楠属植物叶片生长规律的研究  

Study on Leaf Growth Rule of Three Plants belonging to Phoebe in the Jianghan Plain

作　　者：徐阳[1] 徐蕾[1] 李海燕[1] 

机构地区：[1]东北师范大学草地科学研究所植被生态科学教育部重点实验室,吉林长春130024

出　　处：《安徽农业科学》2011年第17期10282-10283,10355,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金-基础科学人才培养基金项目(J0830627)

摘　　要：[目的]对3种楠属植物楠木(Phoebe zhennan)、利川楠(P.lichuanensis)和闽楠(P.bournei)叶片的生长规律进行了研究。[方法]大样本、随机取样测定成株叶片的长度、宽度、面积和生物量。[结果]闽楠的叶片宽度显著小于楠木和利川楠。3种植物叶片长度、宽度、面积和生物量的变异系数均为楠木>利川楠>闽楠。3种植物叶片的生长规律均可由多种函数形式较好地表达,在最佳的拟合方程中,楠木、利川楠和闽楠的叶片在宽度与长度的关系上均呈异速生长规律;在干重与面积的关系上,楠木呈同速生长关系,利川楠及闽楠呈异速生长规律。[结论]同属不同植物种间叶片的生长规律既有共同之处也存在差异。[ Objective J Growth rule of three plant leaves belonging to Phoebe （ Phoebe zhennan, P. lichuanensis and P. bournei） was studied. [ Method] Big samples and random sampling method were used to measure length, width, area and biomass of leaves. [ Result] Leaf width of P. bournei wag slgmficant longer than those of both P. zhennan and P. hchuanensts. Coefficient vanatlons of length, width, area and biomass of three plants were P. zhennan 〉 P. lichuanensis 〉 P. bournei. Three functions all represented growth regulation on leaves of three species. In the best-fitting equations, the relationships between length and width of three plants were allnmetric, and that between area and biomass of P. zhen- nan was isogony as well as those of the other two were allometry. [Conclusion] Leaf growth rules of three plants were either different or same.

关 键 词：楠属 叶片 异速生长 同速生长 生长规律 

分 类 号：X173[环境科学与工程—环境科学]