雌雄异株植物髭脉槭繁殖成本变化的性别差异响应  

Gender difference response to the change of reproductive cost of dioecious plant Acer barbinerve Maxim.

作　　者：王艺彤 郭汉麟 廖丹 雷晶晶 王映霓 张春雨[2] 王娟[1] WANG Yitong;GUO Hanlin;LIAO Dan;LEI Jingjing;WANG Yingni;ZHANG Chunyu;WANG Juan(Beijing Key Laboratory of Forest Resources and Ecosystem Processes,Beijing Forestry University,Beijing 100083,China;State Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,China;National Forestry and Grassland Administration Industrial Development Planning Institute,Beijing 100010,China)

机构地区：[1]北京林业大学森林资源与生态系统过程北京市重点实验室,北京100083 [2]北京林业大学林木资源高效生产全国重点实验室,北京100083 [3]国家林业和草原局产业发展规划院,北京100010

出　　处：《生态学报》2025年第5期2436-2448,共13页Acta Ecologica Sinica

基　　金：国家重点研发计划重点专项项目(2023YFF1304001⁃01)。

摘　　要：繁殖成本不同,导致雌雄异株两性植物的资源分配机制不同,这种性别差异会导致其生长和繁殖过程变化,改变繁殖成本正是深入了解雌雄异株植物资源分配性别差异响应的有效途径。以吉林蛟河天然针阔混交林样地内雌雄异株植物髭脉槭为研究对象,以营养器官叶片和新生枝性状及参与繁殖过程的铜、钼、硼、铁、锰作为衡量髭脉槭的量化指标,探究不同生长阶段和不同繁殖成本变化下雌雄异株植物髭脉槭的性别差异和差异可塑性。研究样地内选取髭脉槭雌雄植株各60株,将其分为三组:所有植株不进行任何处理(CK组),所有植株在花蕾初期去除整株的所有花蕾(RB组),所有植株在开花末期去除整株的所有花朵(RF组)。在开花期和结果期分别采集不同处理组中髭脉槭的叶片和新生枝作为样本,运用双因素方差分析检验不同繁殖成本下雌雄髭脉槭差异显著性。结果表明:改变繁殖成本对比叶面积和叶片生物量影响不显著,对开花期与结果期髭脉槭的新生枝生物量及长度、叶片Cu、Mo、B、Fe、Mn含量影响均显著并产生性别差异响应。开花期,CK组雌株新生枝生物量显著低于雄株,新生枝长度显著大于雄株,RF组中雄株叶片Cu、Mo含量显著高于雌株,雌株叶片B、Fe、Mn含量显著高于雄株,对照CK组与RB组中雌雄株叶片Cu、Mo、B、Fe、Mn含量无显著差异。结果期,RB组雌株新生枝生物量显著低于雄株,RB、RF组雌株新生枝长度显著大于雄株,对照CK组中雌株叶片Cu、Mo含量显著高于雄株,雄株叶片B、Fe、Mn含量显著高于雌株,RB组与RF组中雌雄叶片Cu、Mo、B、Fe、Mn含量无显著差异。在不同的生长阶段,改变繁殖成本对髭脉槭新生枝生物量和长度以及叶片微量元素Cu、Mo、B、Fe、Mn的含量均有显著影响,且表现出性别差异。性别和繁殖行为对植物叶片和新生枝性状的调控可能是一种适应性反�Different reproductive costs lead to different resource allocation mechanisms of dioecious plants,and this gender difference will lead to changes in the process of growth and reproduction.Changing reproductive costs is an effective way to further understand the response to gender differences in resource allocation of dioecious plants.This study focuses on the dioecious plant A.barbinerve within the mixed coniferous and broad⁃leaved forest ecosystem in Jiaohe,Jilin Province.The characters of leaves and new branches of vegetative organs and copper,molybdenum,boron,iron and manganese involved in reproduction were used as quantitative indexes to explore the sex difference and plasticity of dioecious plant A.barbinerve under different growth stages and different reproductive costs.A total of 60 A.barbinerve plants,both male and female,were selected across the sample plots and categorized into three groups.All the plants in the CK group were not treated at all,all the plants in the RB group removed all the buds of the whole plant at the early bud stage,and all the plants in the RF group removed all the flowers of the whole plant at the end of flowering.Samples of leaves and new branches from A.barbinerve across various treatment groups were collected during flowering and fruiting stages,and two⁃way ANOVA was conducted to assess significant sex⁃based differences in A.barbinerve under varying reproductive costs.The results showed that changing the reproduction cost had no significant effect on specific leaf area and leaf biomass,but had significant effects on the biomass and length of new branches and the contents of Cu,Mo,B,Fe and Mn in leaves of A.barbinerve at flowering and fruiting stages,and produced a sex⁃differentiated response.During the flowering stage,female plants in the CK group had significantly less biomass in new branches compared to males,yet these branches were significantly longer.The contents of Cu and Mo in leaves of male plants in RF group were significantly higher than those of female plants

关 键 词：性别差异 雌雄异株 繁殖成本 髭脉槭 

分 类 号：S66[农业科学—果树学]