PJB-2023-489
Effects on altitude on reptoductive characteristic of an endangered plant Tetracentron sinense Oliv.
Qian Yang
Abstract
This article takes the endangered plant Tetracentron sinense Oliv. as the research object to study the reproductive characteristics of T. sinense. at different altitudes. The effects of climate warming on the future natural regeneration of T. sinense were investigated indirectly by simulating climate change with altitude gradient. The results showed that the flowering phenology of T. sinense at low-altitude was more advanced than that at high-altitude. With the increase in altitude, the length of inflorescence and infructescence decreased, while the single flower area, the length of long stamens, short stamens, and pistil increased. Analysis of the proportion of components in the infructescence of T. sinense showed that the proportion of pericarp biomass decreased, but the proportion of seed biomass increased with increasing altitude. The pollen counts and P/O value of T. sinense were significantly higher at mid-altitude compared to other altitudes. Furthermore, the length, width, and thickness of T. sinense seeds continuously decreased with the increase in altitude. T. sinense at low altitude had lower seed germination and germination potential. These changes will ultimately hinder the reproduction process of T. sinense and are not conducive to the regeneration and reproduction of the existing T. sinense repropopulation.
To Cite this article:
Download
