Occurrence of hardseededness in relation to seed development in okra (Abelmoschus esculentus (L) Moench)

DEMİR İ.

PLANT VARIETIES AND SEEDS, vol.10, no.1, pp.7-13, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 1
  • Publication Date: 1997
  • Journal Name: PLANT VARIETIES AND SEEDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.7-13
  • Ankara University Affiliated: Yes

Abstract

Okra seeds (cv. Akkoy) were harvested 18, 25, 32, 36, 39, 43, 46, 50 and 60 days after anthesis (DAA) in 1994 and 1995. Seeds were tested far germination at 25 degrees C over 28 days. Seeds that did not imbibe were considered as hard seeds. Seed moisture content dropped to 10% by 50 DAA in both years. No seeds were able to germinate until 32 DAA. As soon as seeds began to germinate at 36 DAA, the percentage of hard seeds increased as seed moisture content declined. At 50 DAA when seed moisture content had dropped to 10%, 52% of seeds tested were hardseeded. This level of hardseededness remained stable in later harvests. Maximum germination was obtained from seeds harvested at 39 and 43 DAA at which stage seeds were 70-100% black bat still had quite a high moisture content (32-44%). Drying seeds within the pod (slow drying) stimulated germination compared to those extracted immediately offer harvest in the early stages of development.