新疆旅游景区圆叶锦葵种群植株构件生物量分配策略  

Strategy on Biomass Allocation of Components of Malva rotundifolia Population in a Scenic Area,Xinjiang

作　　者：贾风勤[1,2] 朱新荣[1] 李幼龙[1] 张文亚[1] 

机构地区：[1]乌鲁木齐职业大学旅游学院,新疆乌鲁木齐830002 [2]中国科学院新疆生态与地理研究所,新疆乌鲁木齐830011

出　　处：《安徽农业科学》2015年第21期232-234,237,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]揭示圆叶锦葵的营养生长特性及繁殖潜力。[方法]对秋季处于营养期和结实后期的旅游植物资源圆叶锦葵进行生物量分配策略研究。[结果]圆叶锦葵两类植株各构件生物量分配均表现为叶>根>茎,但营养期植株物质分配较结实后期稳定,结实后期植株表现出更大的表型可塑性和可调节性。两类植株在叶生物量分配与总生物量和丛径间均具有异速生长规律,根呈现同速线性增长规律,茎在营养期呈现异速生长规律。生殖分配随植株总生物量和丛径的增加分别呈幂函数和直线形式的降低,分配策略为较大的植株将分配较少的物质和能量用于繁殖器官果实的建成。[结论]该研究为旅游景区植物资源的充分利用与景区生态环境的保持提供了理论依据。[ Objective ] The study aimed to reveal the vegetative growth characters and breeding potential of Malva rotundifolia. [ Method ] Biomass allocation of M. rotundifolia population constructed by plants at vegetative stage and later grain-filling stage in the fall was studied. [ Result] Biomass allocation of each component in two kinds of plants had the same change regulation that was leaf 〉 root 〉 stem, but material distribution of vegetative stage plants were more stable than that of later grain-filling stage plants, it meant that later grain-filling plants showed a greater phenotype of plasticity and were more adjustable. The regulation between biomass allocation of each vegetative component and total biomass and tuft size in two kinds of plants were shown as the heterogeneous speed growth by power function in leaves, and the synchronized growth by linear function in root, but the heterogeneous speed growth in vegetative stage in stem. The growth speed of reproductive allocation was decreased by power function with total biomass and by linear function with tuft size, the allocation strategy was the bigger plants contributed smaller energy and nutrients to the construction of fruits. [ Conclusion] The research could provide scientific references for the reasonable utilization of plant resources and protection of ecological environment in scenic areas.

关 键 词：圆叶锦葵 生育期 生物量分配 生殖分配 

分 类 号：S731.3[农业科学—林学]