Imbibition for 6 hours could lower ratio of dry or fresh weight of cotyledons to fresh weightof seedling(FWC/FWS%); but it was beneficial to the direct formation of flower buds fromdetached cotyledons cultured on MS medium.

• 吸胀6h，使子叶干重百分率和子叶鲜重占苗鲜重的百分率降至最低点，但显著有利于黄瓜离休子叶培养直接分化花芽。