The effects of heat treatment on hardseededness of serially harvested okra seed lots at optimum and low temperatures

DEMİR İ.

SCIENTIA HORTICULTURAE, cilt.89, sa.1, ss.1-7, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 89 Sayı: 1
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0304-4238(00)00216-8
  • Dergi Adı: SCIENTIA HORTICULTURAE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-7
  • Anahtar Kelimeler: okra, germination, hard seeds, after-ripening
  • Ankara Üniversitesi Adresli: Evet

Özet

A heat treatment of 50 degreesC for 2 days increased both germination rate and capacity of serially harvested (36, 39, 43, 46, 50, 58 DAA) okra (Abelmoschus esculentus (L.) Moench cultivar Akkoy) seeds, The more mature the seeds the better the response to treatment. Maximum advantage was obtained from seeds harvested 58 DAA, at which maximum hardseededness occurred and at an incubation temperature of 18 degreesC as opposed to 25 degreesC. Treated seeds of 58 DAA showed germination of 84 and 48% at 18 and 25 degreesC, respectively. Eradication of hardseededness by the treatment was associated with an increased imbibition rate and electrical conductivity of steep water. The better results at 18 degreesC indicate that the heat treatment can be used by commercial companies and individual producers for early sewings in order to obtain better seedling establishment. (C) 2001 Elsevier Science B.V. All rights reserved.