Фенологические особенности развития репродуктивных органов и завязываемость семян у тиса ягодного в предгорной зоне Крыма

Abstract

In the research area, normally developed generative organs are formed in the common yew, and in the years with positive temperatures during the pollination period the seeds are formed. Vulnerable phase of microstrobile development is the period of divergency of microsporophylls and preparation for pollination. As a result of damage to the hydrated cells of the strobila axis, they lose the ability to pollinate. The affection of the ovules by low temperatures was not noted. Taking into account phenological heterogeneity and different probability of microstrobiles, it is recommended to use male trees of the entire phenological spectrum when founding the maternityseed plots.