THE TIMING OF THE PASSAGE OF THE PHENOLOGICAL PHASES OF THE DEVELOPMENT OF KAMCHATKA HONEYSUCKLE

Abstract

The article presents long-term data on the study of the main phenological phases of the development of indigenous forms of honeysuckle, selected from the Central zone of the Kamchatka Peninsula: Milkovo, Kozyrevsk and the South-Eastern zone: Yelizovo, Petropavlovsk-Kamchatsky. The purpose of the study is to study the passage of the main phenological phases of the development of the initial forms of honeysuckle and distribute them according to the timing of the phenophases for use in the breeding process. When assessing economically valuable traits, it is important to analyze the passage of development phases, which are determined by climatic factors in the growing area. In the conditions of the south-east of Kamchatka, honeysuckle begins to vegetate from May 10 to May 18, with an average daily air temperature above 4.8-7.20 C. Early flowering, from June 6 to June 8, in the forms of Kozyrevsky and Milkovsky origin, at an average daily air temperature above 7.0-8.80 C; later, the forms of Yelizovsky and Petropavlovsk bloom - from June 7 to 9, at an average daily air temperature above 7.1-11.20 C. Full fruit ripening occurs 50-57 days after the beginning of flowering. The first mature berries form forms from Kozyrevsk – from July 25 to 31, from Milkovo – from July 25 to August 2, at an average daily temperature above 14.5-18.20 C. Later, from July 28 to August 3, the mass ripening of berries in the forms from Yelizovo and Petropavlovsk, with an average daily air temperature above 13.5-16.00 C. The growth of honeysuckle shoots begins in the first decade of June, and ends in the third decade of July (July 22-30), with an average daily air temperature above 14.2-18.70 C. The average duration of the growing season of the studied forms of honeysuckle is from 139 to 152 days. As a result of the study, the initial forms of Kamchatka honeysuckle are distributed according to the terms of the phenological phases of development, for further breeding use.