The article presents a comparative analysis of the ecological plasticity and stability of large-fruited strawberry varieties in the conditions of the Kamchatka region. As a result of statistical and regression analyses, varieties with high ecological plasticity of productivity (bi > 1) and a positive response to improved growing conditions were identified, classified as intensive type: Pervoclassniza, Atlas, Japonka, Grenada, Festivalnay romashka, Galina, Fructovay; with low plasticity (bi < 1)-extensive type: Solnechnay polaynka, Corrado, Wengerca. Of particular value are the most stable in terms of productivity varieties of intensive type Galina and Fruit. A positive correlation of significant strength between the productivity of strawberry varieties and the coefficients of stability (r = 0,7) and plasticity (r = 0,6) was established, which shows the effectiveness of their use in assessing the adaptability of varieties. High-vitamin varieties with an average berry weight of at least 7,0 g, the most environmentally plastic and stable in vitamin C content, were identified: Atlas, Firework, Pervoclassniza, Fructovay. A comprehensive assessment of the parameters of adaptability in terms of fruit productivity and quality (vitamin C content, soluble solids, sugar-acid coefficient)established that the highest ecological plasticity and stability are possessed by high-vitamin varieties of intensive type Pervoclassniza and Fructovay.
MOLECULAR MARKERS ASSOCIATED WITH HIGH VITAMIN-C CONTENT IN GUAVA
