Document Type : Research Paper

Authors

1 Assistant Professor of Plant Production and Genetics Department, Weed science, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan. Bavi, Mollasani, Iran.

2 Assistant Professor of Plant Production and Genetics Department, Faculty of Agriculture, Agricultural Sciences and Natural Resources University of Khuzestan

Abstract

In order to evaluate chia (Salvia hispanica L) to temperature, under abiotic stresses (salinity and drought) three separate experiments were carried out in the laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in four replications in 2018. Treatments included temperature (5, 10, 15, 20, 25, 30, 35, 40 and 45 °C), salinity (0, 50, 100, 150, 200, 250, 300, 350 and 400 mM) and drought stress (-0.2, -0.4, -0.6, -0.8, -1, 1.2 and 1.4 MPa). In response to temperature, chia was able to germinate in the range of 10 to 40 °C. The base temperatureو, optimum temperature and ceiling temperature were predicted 6, 28 and 44°C respectively. Germination percentage and germination rate decreased in response to salinity and at salinity 400 mM, germination was completely inhibited. Salinity 50% reduction (X50) in germination percentage and germination rate obtained at salinity 349 and 236 mM. 50% reduction in germination percentage and germination rate was observed at -0.92 and -0.79 MPa of drought stress. According to x50 parameter, chia is resistant to salinity and drought stresses. In conditions of saline soils and drought stress, chia can be recommended to farmers for cultivation.

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