Morphological and physiological differences in heteromorphic leaves of male and female Populus euphratica Oliv.

作     者：LI Xiu ZHAI Juntuan LI Zhijun LI Xiu;ZHAI Juntuan;LI Zhijun

作者机构：College of Life Sciences and TechnologyTarim UniversityAlar 843300China Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production&Construction CorpsAlar 843300China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2022年第14卷第12期

页      面：1456-1469页

核心收录：

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：funded by the National Natural Science Foundation of China(U1803231,31860198,31060026) the Innovative Team Building Plan for Key Areas of Xinjiang Production and Construction Corps(2018CB003) 

主　　题：arid area canopy height dioecious plants morphology physiological characteristics 

摘      要：Leaf traits can directly reflect the adaptation strategies of plants to the ***,there is limited knowledge on the adaptation strategies of heteromorphic leaves of male and female Populus euphratica *** response to individual developmental stages(i.e.,diameter class)and canopy height *** this study,morphological and physiological properties of heteromorphic leaves of male and female *** were *** showed that both male and female *** exhibited increased leaf area(LA),leaf dry weight(LDW),leaf thickness(LT),net photosynthetic rate(P_(n)),transpiration rate(T_(r)),stomatal conductance(g_(s)),proline(Pro),and malondialdehyde(MDA)concentration,decreased leaf shape index(LI)and specific leaf area(SLA)with increasing diameter and canopy *** water potential(LWP)increased with increasing diameter,LWP decreased significantly with increasing canopy height in both sexes,and carbon isotope fraction(δ^(13)C)increased significantly with canopy height in both sexes,all of which showed obvious resistance ***,males showed greater LA,LT,P_(n),T_(r),and Pro than females at the same canopy height,and males showed significantly higher LA,SLA,LT,P_(n),T_(r),g_(s),and MDA,but lower LWP and δ_(1)3C than females at the same canopy height,suggesting that male *** have stronger photosynthetic and osmoregulatory abilities,and are sensitive to water ***,difference between male and female *** is closely related to the increase in individual diameter class and canopy *** summary,male plants showed higher stress tolerance than female plants,and differences in P_(n),g_(s),T_(r),Pro,MDA,δ_(13)C,and LWP between females and males were related to changes in leaf morphology,diameter class,and canopy *** results of this study provide a theory for the differences in growth adaptation strategies during individual development of ***.