Stock Influence on Growth, Morphological and Biochemical Leaf Parameters Prunus domestica L.

Abstract

Vegetation growth peculiarities and morphological and physical-biochemical features of Prunus domestica L. Utro and Yaichnaya Sinyaya varieties leaves grafted on different growing strength rootstocks were studied. Low-growing clonal rootstocks 140–1 and Novinka decreased the trees growing strength on 15–20% in comparison with strong-growing stocks; medium-growing rootstocks OPA-15-2 and OP-23-23 reduced it on 10%. The longest growing activity and the largest sprouts length was stated on these rootstocks as well, i.e. 1.3–1.4 times more than on other ones. Stable sprouts average length decrease was registered on grafted stocks 140–1 and Novinka. Leaf surface index value on the trees grafted on clonal rootstocks OPA-15-2 and OP-23-23 was on 40% higher than on control, i.e. 4.3 leaves m2/crown projection area m2. Optimal values of total increment, sprouts average length, leaves area and the largest part of physiological-biochemical parameters were stated at medium-growing clonal rootstocks OPA-15-2 and OP-23-23 use. Plum leaves blades were hypostomatic; numerous stomata were located on the abaxial (bottom) side of leaves. Stomata were located in interveinal space irregularly. Stomata length size varied from 14.6 μm (Utro/seedlings) to 22.1 μm (Yaichnaya Sinyaya/OP-23-23). The rootstock has influence on the process of photosynthesis, antioxidant activity, accumulation of minerals and metabolic answerin the leaves.

Effect of climatic conditions on some physicochemical and physiological characteristics of the plum fruits Horvin variety growth

“…Como lo manifiesta Medina-Torres (2000), se han propuesto diversos parámetros para determinar la madurez de las ciruelas en la recolección, siendo los más usuales, el color de la epidermis y la dureza de la pulpa. Respecto a la fisiología de su maduración, las ciruelas han sido tradicionalmente clasificadas como frutos climatéricos (Sánchez, 2015;Motyleva et al, 2021).…”