Features of female cone’s formation of Scotch pine in provenance tests of the Left-bank Forest-Steppe of Ukraine
Journal Title: Лісівництво і агролісомеліорація - Year 2013, Vol 122, Issue
Abstract
The features, phenology and duration of key stages of female cone’s formation for different Scots pine provenances in the provenance tests of the Left-bank Forest-Steppe of Ukraine were investigated at cytological level. It was revealed that for the 6 groups of provenances (Local, Northern, Volga region, Western, Isolated, Southern) studied formation of the female cone on the first year of development takes place from 1.04 till 27.05 and from 18.04 till 25.05 on the second year . Northern pines are much differ from the others and advance them on terms of formation of cones for 14 days. It does impossible their crossing with others climatypes. Correlation dependences between certain dates of stages’ forming of female Scotch Pine’s macrostrobiles on first (n + 1) and second (n + 2) years of development and some geographical and climatic characteristics of maternal stands were found out. Tendencies of dependence between phenology of certain stages of female gametophyte formation and energy of germination of seeds were defined.
Authors and Affiliations
L. Torosova
Keywords
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