PJB-2024-415
Strategies differentiation of leaf anatomic traits of 15 Syringa species in wet and cold environments
Xing He
Abstract
Leaf anatomical characteristics, reflecting the micro-scale functions of plants, are crucial for understanding plant adaptation strategies. Clarifying different adaptive strategies within the same genus under similar environmental conditions is critical for exploring plants' interspecific variation. This study focused on 15 species of Syringa plants in Xi'ning City, compared interspecific differences in leaf anatomical traits, established allometric growth relationships, and constructed trait spectra. Results showed that: (1) There were significant interspecific differences in leaf anatomical traits among the 15 species (P<0.05), with coefficient of variation (CV) ranging from 35% to 60%. (2) Different anatomical traits exhibited a highly significant linear relationship, indicating an isometric scale across species. (3) Based on leaf anatomical traits, two adaptive strategies were identified. These are the conservation and resource acquisition strategy axis, and the support transport strategy axis. These results suggest that plants within the same genus have developed more conservative leaf economic strategies in cold and wet habitats. By combining the principles of allometric growth theory and principal component analysis, we can gain a better understanding of how harsh environments affect plant life history strategies. This approach helps us identify the most important traits that are key to the survival of the lilac population, which provides us with a scientific basis for both protecting and migrating this species.
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