Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract Reduced competition and increased availability of abiotic resources shortly after a fire can favour growth flowering herbaceous species. These changes may also affect the pollinator community, reproductive success, and, potentially, characteristics progeny. However, anthropogenic increases in frequency fires could reverse beneficial effects fire. We evaluate effect on sexual expression, pollination, female early progeny vigour Solanum palinacanthum, an andromonoecious resprouting herb South American Chaco ecosystems. Measurements were performed at six sites along gradient frequency, ranging from 0 to 5 over 22 years. found that plant size proportion hermaphrodite (relative male) flowers intermediate (twice burned) compared unburned sites, but both declined high‐fire sites. Pollinator visits more frequent plants area with frequency. Although did not enhance probability fruit set, it total number site burned twice. Seeds had higher mass germination rates. Soil maternal environmental shaped by play key role reproduction S. palinacanthum . Nonetheless, due human activities override reproduction.

Language: Английский