Процессы гидратации, предшествующие прорастанию пыльцы, предопределены морфологическими особенностями пыльцевого зерна можжевельника. Эксперименты по проращиванию пыльцы in vitro и наблюдения за развитием пыльцевых трубок in vivo показали, что важную роль в процессах сбрасывания экзины и последующего развития пыльцевой трубки у можжевельника обыкновенного играет гидрофильная капсула, сохраняющаяся в течение всей жизни пыльцевых трубок, вплоть до момента оплодотворения. Установлено, что для проращивания пыльцы можжевельника оптимальны гелеобразные (на основе агара) среды, содержащие сахарозу. По результатам этих экспериментов предложена схема расчета жизнеспособности пыльцы можжевельника при проращивании in vitro.
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