Evaluating Endangered Pitcher Plant (Sarracenia jonesii) Leaf Morphology And Flowering As Related To Soil Nutrient Status

As a federally endangered and critically imperiled carnivorous plant, there is limited information on Sarracenia jonesii. This study provides a greater understanding of how soil nutrients affect this pitcher plant's ability to grow carnivorous leaves and catch its own prey, as well as how it affects the plant's ability to flower and spread its dwindling genetic diversity. Sarracenia jonesii plants were found to have more flowers as the number of carnivorous leaves increased. The soil nutrient assessment of this population demonstrated that these carnivorous plants occupy soil that is high in nutrient content potential but low in plant-available nutrients, specifically nitrogen. Flowering and the presence of soil ammonium (NH4), did not exhibit a relationship. The growth of non-carnivorous leaves, phyllodia, and the presence of soil NH4 did not show a relationship. A historical assessment of one of the few remaining populations of S. jonesii showed a decline in clumps but showed increased leaf and flower production. This information can be used to inform future conservation strategies to ensure plants are propagated and planted in appropriate soil conditions for ideal growth, carnivory, and reproduction.

作为一项联邦级濒危且濒临灭绝的肉食性植物，关于Sarracenia jonesii的信息极为有限。本研究旨在深入探讨土壤养分如何影响该种捕虫瓶植物的肉食性叶片生长及捕食能力，以及其对植物开花和减少的遗传多样性扩散能力的影响。研究发现，随着肉食性叶片数量的增加，Sarracenia jonesii植物的花朵数量也相应增多。对该种群土壤养分的评估表明，这些肉食性植物占据的是养分含量潜力较高但植物可利用养分较低的土地，尤其是氮素。开花与土壤中铵（NH4）的存在并未显示出相关性。非肉食性叶片（叶状枝）的生长以及土壤中铵的存在之间也没有发现关系。对S. jonesii仅存少数种群之一的历史评估显示，丛生数量有所减少，但叶片和花朵的生产却有所增加。这些信息可用于指导未来的保护策略，确保植物在适宜的生长、捕食和繁殖的土壤条件下繁殖和种植。