STM Article Repository

In order to study the effects of foliar sprays of cytokinine (CK) and abscisic acid (ABA) in different reproductive growth stages wheat of maternal plant (Zarrin: Cultivation of irrigated wheat Sensitive to salinity in germination stage ) on the seed characteristics under laboratory saline conditions a factorial experiment arranged in randomized complete blocks design (RCBD) with three replications and two factors was conducted in Agricultural Faculty of Mahabad Azad University.
Factor A included three saline stress levels of 0(Chek), 0.4 and 0.8 ds/m and factor B included seven levels; b1: no spray of hormones as the Control, b2: CK foliar spray in pollination stage, b3: CK and ABA foliar sprays in grain filling and pollination stages, b4: CK foliar spray in grain filling and pollination stages, b5: ABA foliar spray in pollination stage, b6: ABA foliar spray in grain filling and pollination stages, b7: CK and ABA foliar sprays in pollination stage (100 mmol CK and ABA solution).
Results showed that with increasing salinity rate all of the studied traits decreased significantly so that the lowest germination velocity, rootlet dry weight and rootlet length were obtained from the saline stress of 0.8 ds/m and their greatest amounts were obtained from the control (chek).
The interaction of salinity and plant growth regulators with dry weight and stemlet length was significant. With increasing the salinity percentage at various levels of hormones the stemlet length and dry weight decreased so that the lowest values were obtained from ABA foliar spray at pollination and grain filling with saline stress of 0.8 ds/m. The greatest values were obtained from the foliar spray of CK at pollination and grain filling with distilled water (Control). The results showed that CK foliar spray at pollination and grain filling had the greatest positive effect on seed vigority under saline conditions.