Reproductive Biology of Astragalus argaeus (Fabaceae), a critically endangered endemic species

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Atasagun B., AKSOY A., GÜLLÜ I., ALBAYRAK S.

ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS, cilt.93, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 93
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1590/0001-3765202120201613
  • Dergi Adı: ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Animal Behavior Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Communication Abstracts, EMBASE, INSPEC, MEDLINE, Metadex, Veterinary Science Database, zbMATH, Directory of Open Access Journals, Civil Engineering Abstracts
  • Anahtar Kelimeler: Astragalus argaeus, endemic, reproductive biology, conservation biology, life history, POLLEN-OVULE RATIOS, BREEDING SYSTEMS, INBREEDING DEPRESSION, SELF-FERTILIZATION, GENE FLOW, CONSERVATION, POPULATIONS, ECOLOGY, HISTORY, PLANTS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Astragalus argaeus is an endemic plant species that is under critical risk of extinction. Here we investigated its population census, breeding system and reproductive success to determine the main factors affecting restricted distribution of this species. According to the results from pollination experiments, A. argaeus was autogamous but benefit from the cross pollination (xenogamous) and the presence of pollinators increases fruit set. The pollen/ovule ratio of A. argaeus was calculated as 3119,which correspond to facultative xenogamy. Reproduction biology data obtained by both methods are quite compatible with each other. Pollen viability and stigma receptivity data showed that both stigma receptivity and pollen viability were high and was no temporal isolation throughout the anthesis. Seed viability of A. argaues was determined as 52%. The low reproductive success of the species could be attributed to low seed viability and germination rates, small population size and variations in season and climate.