A Novel RAPD and SCAR Marker of the Resistant Gene for Downy Mildew (dm) in Cucumber Effect of Nitrate Nitrogen on Activities of Glutamine Synthetase and Glutamate Dehydrogenase during Development of Cucumber Cotyledon Effects of iso-osmotic Ca(NO3)2 and NaCl stress on growth and physiological characteristics of cucumber seedlings The Induction of Female Flowers in Cotyledons of Cucumber (Cucumis sativus L.) in Vitro Effect of Calcium on Growth and Chlorophyll Fluorescence of Cucumber Seedlings under Hypoxia Effects of Exogenous Spermdine on Soluble Protein Expression in Cucumber Seedlings under Different Saline Concentrations Clone and Analysis of Expansin Gene of Cucumber Fruit