Relationship between Laboratory Germination and Biometric Parameters of <i>Betula jarmolenkoana</i> Golosk. Aglets

This study evaluates the relationship between laboratory germination and biometric parameters of aglets critically endangered birch tree species Betula jarmolenkoana Golosk (Yarmolenko birch). The Yarmolenko is a very rare, narrowly endemic species, growing at an altitude 1,900-2,100 m above sea level only in basins three rivers (Kakpak, Bayynkol, Tekes) Almaty region Kazakhstan. Therefore, research currently needed to increase stability forests determine optimal ways preserve them. aimed establish nature aglets. To conduct surveys on forests, six sampling areas were selected, five trees close age (VI-VII classes) selected marked each area. At end summer (August), after seeds had reached physiological maturity (yellowing aglet core), 100 pieces collected from height 2.0 2.5 weighed electronic scales. data obtained processed using methods variational statistics, average values, coefficient variability, standard error value calculated. Student's t-test was used compare features areas. seed identified statistically substantiated. According three-year observations, some forest, especially with young medium-aged plants, morphometric not same did repeat different years. due weather conditions year formation growth development seeds.