Effects of Gibberellic Acid and Gold Light on Germination, Enzyme Activities, and Amino Acid Pool Size in a Dwarf Strain of Watermelon 1

摘要

Gibberellic acid (GA3) promotes and continuous gold light inhibits germination of seeds of a dwarf strain (WB-2) of watermelon [Citrullus lanatus (Thunb.) Matsu. and Nakai]. Osmotic inhibition of germination with mannitol in light-grown seeds of WB-2 was only slightly reversed by GA3 at the concentrations used, whereas, GA3 substantially relieved osmotic inhibition in dark-grown seeds.