Photosynthetic activity of apricot varieties cultivated in the Southern zone of the Republic of Moldova

Abstract

Research on the growth parameters and photosynthetic activity of apricot plants was carried out in the agroclimatic conditions of the South of the Republic of Moldova, Vulcanesti district, in the farm SRL „Timac-Agro EAFT” on the varieties: Kyoto, Faralia, Pin Cot, Spring Blush, Orange Red, Farbaly, Parle Cot, Sweet Cot, Wander Cot, Magic Cot, Lili Cot, Big Red. Determine the indices of photosynthetic activity – the content of assimilatory pigments cl.a, cl.b, the sum of cl.a+b and carotenoids, mg/g.abs.dry subs.; chlorophyll indices (cl.a/cl.b), pigment indices (cl.a+b/carotenoids) and chlorophyll content (cl.a+b), mg/leaf. The studies were carried out in two periods: the deposition of the generative organs and their differentiation.