Abstract:

The aim was to improve the yield and quality of Leymus chinensis. The experiment was conducted by applying GA3, IAA and KT on L. chinensis jointing stage, to investigate the change of seed number and weight, and the characteristic of seed germination. The results indicated that, different exogenous hormone had diverse effects on the seed formation and germination on L. chinensis. GA3 and KT enhanced the number and weight of seeds of L. chinensis. However, GA3 had no significant effect on seed germination, but KT markedly decreased the various index of seed germination. Although IAA had no significant effect on the seeds number and weight per plant, it increased the various index of seed germination and the root length. Therefore, foliar spray with GA3 could effective improve the seed number and weight of L. chinensis, and application with IAA could increase the seed germination quality of the season.