Changes in seed lot constant (K-i) and storage longevity (sigma, P-50) in tomato seeds during development in relation to extraction methods

Demir İ., Ozcoban M., Samit Y.

PLANT VARIETIES AND SEEDS, cilt.14, sa.3, ss.163-169, 2001 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 3
  • Basım Tarihi: 2001
  • Dergi Adı: PLANT VARIETIES AND SEEDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.163-169
  • Ankara Üniversitesi Adresli: Evet

Özet

Tomato seeds were harvested 60, 70, 80 and 90 days after anthesis (daa), in 1998 and 50, 60, 70 and 80 daa in 1999 and extracted by natural fermentation, or hydrochloric acid extraction with pH 1, 2, 3 in 1998, and pH 1 and pH 2 in 1999. Seed quality was then assessed by seed lot constant (K-i), standard deviation of distribution of seed deaths in time (sigma) and time for seed viability to be reduced to 50% (p(50)) from the seed viability equation. Results showed that K-i and p(50) were reliable and rational tests of seed quality. Seeds harvested 70 daa consistently showed the greatest K-i and p(50) values among the lots irrespective of extraction methods, Natural fermentation and pH 1 were found to be deleterious for seeds harvested 50, 80 and 90 daa, while pH 2 appeared to be the optimum extraction method,