European Journal of Experimental Biology Open Access
ISSN: 2248-9215
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Abstract
Role of photoperiod on some growth characters of Amaryllis
(Hippeastrum johnsonii), a Bulbous plant
Sara Zakizadeh, Behzad Kaviani and Rasoul Onsinejad
Day length is an important factor effective on plant growth and development. The present study describes the effects
of different photoperiods (16-8, 14-10 and 12-12 h light/dark) on some growth characters of Hippeastrum johnsonii
using bulblets cultured on MS basal medium. Explants were bulblets. In all cases, 16-8 h light/dark was more
effective. Maximum bulblets diameter (3.15 cm), leaf length (9.80 cm), root number (2.25), root length (2.18 cm)
and longest root length (2.70 cm) were observed in explants treated with 16-8 h light/dark.
