“…Early stage for vegetative growth needs cooler weather and formation of bulb is enhanced by high temperature. Hybrid varieties play a vital role in increasing vegetable production due to their high yield potential, early maturing, superior quality, disease and pest resistance attributes (Nagaraju et al 2017). MS mechanism is one of the tools for hybrid variety development and it is the most significant mechanism for improving the yield and higher returns of onion (Pike, 1986, Kalloo, 1988.…”