Stomatal Behaviors and Physiological Responses Affected by Iron Deficiency in Peach Plants Grafted onto Garnem and GF 677

Iron (Fe) is a pivotal nutrient taking roles in respiration, photosynthesis and many plant metabolisms. Chlorosis caused by Fe deficiency generally occurs high pH environments fruit trees including peach are known sensitive to iron starvation. starvation declines leaf chlorophyll carotenoid contents, supresses growth photosynthetic capacity. induces responses plants different stomatal behaviors physiological alterations occur sustain the increased uptake capacity of Fe-deficient plants. In this study, effects on morphology variety Rich May grafted onto Garnem GF 677 rootstocks were investigated. Plants exposed deficient conditions for 3 months. End experiment, properties evaluated. The highest decrease (relative rates shoot diameter length) induced was found Garnem. SPAD relative anthocyanin decreased 52 70% May/Garnem grafting combination. Decreases values lower with 677. 677, LRWC 1.8% membrane permeability 10%. controlled Stomatal factors more rootstock, increment pore areas leaded increase conductance. damage depletion higher due loss SPAD, increasing permeability. Thus, can be used orchards under conditions.