Plant Regeneration from Cotyledonary Explants of Chinese Cabbage Cultured in Vitro Efects of Ozone on Growth and Yield of Chinese Cabbage Cloning and Expression Analysis of Vernalization-related Gene BcFLC in Brassica campestris QTL Analysis for Gluconapin Accumulation in Leaves of Brassica campestris L. Cloning and Expression Analysis of Enhancer of Glabra3(BrEGL3)in Brassica campestris L. ssp. rapifera‘Tsuda’ Efects of Ozone on Growth and Yield of Chinese Cabbage Cloning and Expression Analysis of Vernalization-related Gene BcFLC in Brassica campestris Cloning and Expression Analysis of Enhancer of Glabra3(BrEGL3)in Brassica campestris L. ssp. rapifera‘Tsuda’ Plant Regeneration from Cotyledonary Explants of Chinese Cabbage Cultured in Vitro