in‏ ‏order‏ ‏to‏ ‏study‏ ‏chamomile‏ ‏tolerance‏ ‏to‏ ‏salinity‏ ‏and‏ ‏find‏ ‏a way‏ ‏to‏ ‏increase‏ ‏its‏ ‏tolerance‏ ‏afactorial‏ ‏experiment‏ ‏was‏ ‏conducted‏ ‏in‏ ‏acompletely‏ ‏randomized‏ ‏design‏ ‏with‏ ‏three‏ ‏replications‏ ‏in‏ ‏‎2012.‎‏ ‏seeds‏ ‏primed‏ ‏with‏ ‏salicylic‏ ‏acid‏ ‏and‏ ‏gibberellic‏ ‏acid‏ ‏‎(ga)‎‏ ‏at‏ ‏‎250‎‏ ‏ppm‏ ‏by‏ ‏a‏ ‏combination‏ ‏of‏ ‏the treatments‏ ‏at‏...

abstract: salicylic acid is a phytohormone with phenolic nature which has been proved its role in increasing plant resistance to biotic and abiotic stress in several studies. this study was performed in order to investigation of interaction between 0, 0.5 and 1.5 mm concentrations of salicylic acid, as a seed pretreatment and different levels of drought stress (100, 75, 50 and 25 percent of fie...

The effect of high CO(2) (1% CO(2)/21% O(2)) on the activity of specific forms of catalase (CAT-1, -2, and -3) (EA Havir, NA McHale [1987] Plant Physiol 84: 450-455) in seedling leaves of tobacco (Nicotiana sylvestris, Nicotlana tabacum) was examined. In high CO(2), total catalase activity decreased by 50% in the first 2 days, followed by a more gradual decline in the next 4 days. The loss of t...