Inclusion of benzyladenine into priming solution promotes germination of Kentucky bluegrass (Poa pratensis L.) seeds


TİRYAKİ İ. , Ozbay N., Nas M. N. , Korkmaz A.

CUBAN JOURNAL OF AGRICULTURAL SCIENCE, cilt.40, ss.229-234, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 40 Konu: 2
  • Basım Tarihi: 2006
  • Dergi Adı: CUBAN JOURNAL OF AGRICULTURAL SCIENCE
  • Sayfa Sayıları: ss.229-234

Özet

The objective of this work is to study whether inclusion of various stress related plant growth regulators into priming solution would improve germination and emergence of Kentucky bluegrass (Poa pratensis L.) seeds. Seeds were primed in 1, 2 or 3% KH2 PO4 for six days at 20 degrees C. Four replications of 100 seeds for germination and 50 seeds for emergence were arranged in a completely randomized design. Priming seeds in 1%KH2PO4 significantly increased germination percentage compared to untreated seeds, although germination rate and synchrony were reduced. Inclusion of methyljasmonate (MeJA, 1, 3, 5, or 10 mu M), 1-aminocyclopropane-1-carboxylic acid (ACC, 1, 3, 5, or 10 mu M) or benzyladenine (BA, 50, 100, 200, or 500 mu M) into priming solution revealed that germination characteristics (germination percentage, rate, and synchrony) could be further improved by supplementing plant growth regulators (PGRs) into priming solution. The highest final germination percentage was obtained from the seeds primed in the presence of 500 mu M BA (79%) compared to seeds primed in 1% KH2PO4 (65%) only. The PGRs improved final emergence percentage and the highest BA concentration Was more effective compared to other PGRs tested. The results indicated that 1%KH2PO4 supplemented with 500 mu M BA could be used to promote germination of Poa pratensis L. seeds to some extend while 3 mu M MeJA can be used to enhance seedling emergence rate of Kentucky bluegrass seeds.