Phothochemical quenching is indicative of ionic stress on ‘Tahiti’ acid lime grafted on citrus genotypes

ABSTRACT The objective was to study the chlorophyll ‘a’ fluorescence and photochemical quenching from ‘Tahiti’ acid lime grafted in new citrus genotypes under irrigation with three types of water during prefloration phase first year cultivation, purposing verify if are indicatives beginning ionic stress. An experiment set up salinity levels (0.14, 2.40 4.80 dS m-1), 13 rootstock, corresponding ‘Rangpur Santa Cruz’ lime, Citrandarins, ‘Sunki Tropical’ mandarin eight hybrids, all using randomized block design four replications. At 70 days after transplanting, a plants were evaluated. Photochemical indicates begin saline stress plants; on TSKC x (LCR TR) - 059, Citrandarins ‘Riverside’ ‘San Diego’ TRBK 007 has greater activation protective mechanisms through transient fluorescence.