胡杨异形叶结构型性状及其与胸径关系  

Heteromorphic leaf structural characteristics and their correlations with diameter at breast height of Populus euphratica.

作　　者：黄文娟[1,2] 李志军[1,2] 杨赵平[1,2] 梁继业[1,2] 白冠章[2] 

机构地区：[1]新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室,新疆阿拉尔843300 [2]塔里木大学植物科学学院,新疆阿拉尔843300

出　　处：《生态学杂志》2010年第12期2347-2352,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(31060026;30060007;30660018);国家重点基础研究发展计划项目(2009CB426303);新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室开放课题资助项目(BRYB1003)

摘　　要：对胡杨5种类型植株的叶片厚度、叶面积、比叶面积、叶片干重和干物质含量等5个结构型性状指标进行分析,研究叶片的结构型性状与胸径之间及各个结构型性状彼此间相互关系。结果表明:叶面积、叶厚度和叶干重与胸径呈极显著正相关(P<0.01),叶片干物质含量与胸径间呈显著正相关(P<0.05),比叶面积与胸径之间呈极显著负相关(P<0.01),说明随着植株生长发育的进行,叶片的面积、厚度、干重和干物质含量均逐渐增加,而比叶面积逐渐减小。各性状指标间相关性表现为叶面积、叶厚度、叶干物质和叶片干物质含量任意2个指标之间均呈显著或极显著正相关;而比叶面积与这4个指标间均呈显著或极显著负相关。Five indices of leaf structural traits,i.e.,thickness （TH）,area （AR）,specific leaf area （SLA）,dry weight （DW）,and dry matter content （DMC）,of five plant types of Populus euphratica were measured,and the relationships between the leaf structural traits and diameter breast height （DBH） of P. euphratica as well as the correlations among the five indices were analyzed. The results showed that the leaf AR,TH,and DW were very significantly positively correlated with DBH （P0.01）,the DMC was significantly positively correlated with DBH （P0.05）,while the SLA was very significantly negatively correlated with DBH （P0.01）. It was suggested that along with the plant growth,the leaf AR,TH,DW,and DMC increased gradually,while the SLA decreased. The correlations among the indices of the leaf structural characteristics showed that the leaf AR,TH,DW,and DMC of P. euphratica were significantly positively correlated each other,while the SLA was significantly negatively correlated with any of the four indices.

关 键 词：胡杨 结构型性状 植株类型 

分 类 号：S792.11[农业科学—林木遗传育种]