Research on the Regeneration System from Hypocotyls and Cotyledon of Brassica napus L. In Vitro Culture and Plant Regeneration of Orychophragmus diffusus Plant Regeneration from Petiole Protoplasts of Brassica napus Seasonal Changes of Caloric Values in Different Organs of Butia capitata Effect of Various Hormones with Different Concentration Ratios on the Regeneration Plant from Tender Petioles of Rosa marretii Levl. Somatic embryogenesis from petiole in Eleutherococcus senticosus Research of NHX Gene Transformation in Brassica napus by Agrobacterium tumefaciens SOMATIC EMBRYOGENESIS FROM PETIOLE IN APPLE Comparative Anatomical Studies on Petioles of Osmanthus ANATOMICAL VARIATIONS IN LEAVES OF BOESENBERGIA O. KUNTZE AND KAEMPFERIA L. SPECIES (ZINGIBERACEAE) 四棱草属比较形态及其分类系统位置的研究──Ⅴ.四棱草属及其近缘属茎和叶柄的解剖 Adventitious bud regeneration from petiole of pear(Pyrus) Tissue culture of chinese wild grape In vitro Culture and Plant Regenera tion of Pa rthenoc issus qu inquefolia AN ANATOMICAL STUDY ON THE PETIOLE IN SOME SPECIES OF POPULUS AND ITS SYSTEMATIC SIGNIFICANCE Preliminary Study on Tissue Culture Technique in Brassica campestris L. ssp. chinensis var. utilis Anatomical Study on Petiole of Angelica sensu lato and Its Allies from China Regeneration of Autotetraploid Broccoli in Vitro Culture and Identification of the Ploidy Influence of nitrate reduction in leaf blades on nitrate-N concentration in petioles of spinach Nitrate accumulation in petiole and blade of different spinach cultivars and its relation to plant growth Within-leaf allometric relationships of mature forests in different bioclimatic zones vary with plant functional types Establishment and Optimization of High-frequency Shoot Regeneration System of Ligusticum chuanxiong Hort. EFFECTS OF BORON ON SOME ELEMENTS, PHENOL, ENZYME ACTIVITY AND HORMONE IN COTTON PETIOLE Research on Direct Formation of Microtubers from Pinellia ternata Regeneration of Autotetraploid Broccoli in Vitro Culture and Identification of the Ploidy Acclimatization of Midrib Angle and Petiole Angle of Camptotheca acuminate Decne to Different Light Regimes in Evergreen Broadleaves Forests Withintwig Biomass Allocation in Evergreen and Deciduous Broadleaved Species:Allometric Scaling Analyses Induction and anatomical observation of callus of Asarum heterotropoides