Relationship between Laboratory Germination and Biometric Parameters of Betula jarmolenkoana Golosk. Aglets
Rakymbekov Z. Abayeva K. Dosmanbetov D. Akhmetov R. Shynybekov M.
2023Science Publications
OnLine Journal of Biological Sciences
2023#23Issue 1117 - 123 pp.
This study evaluates the relationship between laboratory germination and biometric parameters of aglets of the critically endangered birch tree species Betula jarmolenkoana Golosk (Yarmolenko birch). The Yarmolenko birch is a very rare, narrowly endemic species, growing at an altitude of 1,900-2,100 m above sea level and only in the basins of three rivers (Kakpak, Bayynkol, and Tekes) in the Almaty region of Kazakhstan. Therefore, research is currently needed to increase the stability of birch forests and determine the optimal ways to preserve them. The study aimed to establish the nature of the relationship between laboratory germination and biometric parameters of birch aglets. To conduct surveys on the Yarmolenko birch forests, six sampling areas were selected, and five trees of close age (VI-VII age classes) were selected and marked in each sampling area. At the end of summer (August), after the seeds had reached physiological maturity (yellowing of the aglet core), 100 pieces of aglets were collected from trees at a height of 2.0 to 2.5 m and weighed on electronic scales. The data obtained were processed using methods of variational statistics, and the average values, coefficient of variability, and standard error of the average value were calculated. Students t-test was used to compare features between the areas. The relationship between biometric parameters and seed germination was identified and statistically substantiated. According to three-year observations, in some areas of the forest, especially in areas with young and medium-aged plants, the morphometric parameters of aglets were not the same and did not repeat in different years. This was due to the weather conditions of the year of aglet formation and the growth and development of seeds.
Forest Growing Conditions , Laboratory Analysis , Sampling Areas , Seed Germination , Soil , Yarmolenko Birch (Betula jarmolenkoana Golosk)
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Faculty of Water, Land and Forest Resources, Kazakh National Agrarian Research University, Almaty, Kazakhstan
Almaty Branch of the Kazakh Research Institute of Forestry and Agroforestry named after A.N. Bukeikhan LLP, Almaty, Kazakhstan
Faculty of Water
Almaty Branch of the Kazakh Research Institute of Forestry and Agroforestry named after A.N. Bukeikhan LLP
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