Akademik Veri Yönetim Sistemi
Diğer, ss.467-483, 2019
Brassinosteroids (BRs) have recently been classified as new
plant hormones. They can be found in all plant organs and it is known that BR
promote plant growth, development and germination in different plants. In this
study, the germination percantage was calculated of radish seeds (Raphanus
sativus L.) which were germinated in different epibrassinolide (eBL)
concentrations (10-5M, 10-7M, 10-9M, 10-11M). Root and hypocotyl lengths,
fresh and dry weights and membrane differantiations were determined at 10
days old seedlings. Epibrassinolide (eBL) is preferred in this study because it
is the active form of BR. It was shown that 10-7M and 10-9M eBL solutions
have promotive effects on seed germination whereas 10-5M eBL have
inhibitory effect . During the seedling growth, root elongation was stimulated
by 10-9M eBL, inhibited by 10-5M eBL. There was no significant difference on
hypocotyl length. When 10-9M eBL solution was heightened fresh weight of all
organs; 10-11M eBL, 10-5M eBL ve 10-9M eBL were heightened dry weight of
root, hypocotyl and cotyledon, respectively. It was thought that, the membrane
permeability was protected by 10-9M eBL by the results. It is hoped that BR
will lead to reduce food supply problems and promosing developments in
agricultural sector.
Key words: Epibrassinolide, Radish, Seed Germination, Seedling
Growth