Studies on seed dormancy and effect of antioxidants on growth, seed yield and quality in quinoa (Chenopodium quinoa willd)

Abstract

A study on dormancy breaking methods in quinoa was conducted in the laboratory of Department of Seed Science and Technology, College of Agriculture, University of Agricultural Sciences, GKVK, Bengaluru during 2022-23. The experiment comprises of different treatments viz., control, potassium nitrate (KNO3) @ 0.2%, 0.5%, 1% for 12 hr, Gibberellic Acid (GA3) @ 100 ppm, 200 ppm, 500 ppm, for 12 hr, Thiourea @ 1%, 2% for 12 hr and kinetin @ 50 ppm, 100 ppm, 200 ppm for 12 hr, Among treatments highest germination (87.25 %), mean seedling length (9.80 cm), mean seedling dry weight (8.96 mg), seedling vigour index-I (855), seedling vigour index-II (782) were recorded in treatment KNO3 @ 1 % for 12 hr and lowest (28.50 %, 7.80 cm, 6.94 mg, 222 and 198, respectively) were recorded in control. It is concluded that treatment KNO3 @ 1 % for 12 hr can break the dormancy in quinoa.