Effects of nitrate calcium on the germination of tomato seeds.
Five strains of tomato seeds(A,B,C,D,I) were treated with Ca(NO3)2 solution.The results indicated that,germination rate,germination energy and the growth of hypocotyl could be promoted by lower concentration Ca(NO3)2,but the growth of seedlings radicle was inhibited at a significant level(P0.05).The inhibitive effects on the seed germinations increased,as Ca(NO3)2 concentrations rose,and different strains were differently inhibited.Comprehensive analysis was made on the relative median lethal concentration,index of relative germination ability and the growth of seedlings.The results showed that their order of salt resistance ability was I DABC.