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Obtaining and Identification of the Allotetraploid from 4x Flowering Chinese Cabbage × 4x Kailan Changes in the Pattern of Organization of Microtubules during Meiosis in Pollen Mother Cell (PMC) of Autotetraploid Rice Comparison of physiological index and diosgenin content in different ploidy of Dioscorea zingiberensis Inducement of tetraploid Dioscorea zingiberensis Cytological Observation on Microsporogenesis in Inter-subspecific Hybrids of Rice with Different Ploidy Level Studies on Polyploid Breeding of Isatis indigotica Fort. Tetraploid Induction and Chromosome Identification from Immature Embryo with Colchicine Treatment in Clivia miniata Phenotypic Observation and Analysis of Inflorescence Variation of Autotetraploid Robinia pseudoacacia Improvement of Callus Induction Efficiency in Anther Culture of Autotetraploid Rice Nutrient Uptake and Use Efficiency of Diploid, Tetraploid, and Hexaploid Wheats under Different Water and Nutrition Conditions Molecular and Cytological analysis of Meiosis in Autotetraploid Arabidopsis thaliana Colchicines Induced Polyploid Plants and Identification in Welsh Onion Studies on the Induction of 2n Gamete in Chinese Cabbage and the Production of Tetraploid by Sexual Polyploidization A New Excellent Mid-maturing Grape Cultivar‘Qiuheibao’ Studies on the Induction of 2n Gamete in Chinese Cabbage and the Production of Tetraploid by Sexual Polyploidization Studies on Anther Development of Mustard Tubers Cytoplasmic Male Sterile Lines in Chinese Cabbage Obtaining and Identification of Tetraploid Brassica nigra Obtaining and Identification of Tetraploid Brassica nigra Photoautotrophic Growth of Tube-plantlets Derived from Elite Autotetraploid Rice Individuals of Hybrid Progenies under Open Condition C-band polymorphism in tetraploid wheat (Triticum turgidum) landraces from Qinghai and Gansu In vitro autotetraploid induction and analysis on DNA methylation diversity of Platycodon grandiflorum Comparative Studies on the Morphological Characteristics of Diploid and Tetraploid of Wild Sickle Alfalfa Establishment of A Tetraploid Alfalfa Family and Analysis of Its Genetic Variability DEVELOPMENT AND CHARACTER OBSERVATION OF AUTOTETRAPLOID POLYEMBRYONIC MUTANT RICE INDUCED BY ION BEAM IMPLANTATIOON Analysis of Genetic Variation and DNA Methylation Alteration in Autotetraploid and Diploid Dendrobium officinale In vitro Induction and Identification of Autotetraploid of Atractylodes lancea (Thunb.) DC. A Comparative Study of Polyploid Development Induction of Ornithogalum thyrsoides by Pendimethalin and Colchicine in vitro Meiosis Observation of Pollen Mother Cells and Determination of Pollen Viability of Tetraploid Asiatic Lily Cultivars Morphological and Developmental Characters of Autotetraploid from Wild Diploid Dactylis Glomerata in Yunnan Province(A Brief Recearch Report) Comparison on microstructures of epidermis and stomatal apparatus of leaf between tetraploid and diploid of Dioscorea zingiberensis Characteristics of Micro-structures and Chlorophyll Fluorescence Parameters of Diploid and Autotetraploid ‘Hanfu’ Apple Leaves SALT RESISTANCE OF TETRAPLOID ROBINIA PSEUDOACACIA Several problems on autopolyploid breeding in plants Growth, Quality and Cold Tolerance of Diploid and Tetraploid Yanghua Radish Study on Nutritional Traits and Isoenzymes of Diploid and Autotetraploid Non-heading Chinese Cabbage Analysis of Karyotype and GISH of the Hybrid from Citrus grandis‘Shatianyou’and C. ichangensis Analysis of Karyotype and GISH of the Hybrid from Citrus grandis‘Shatianyou’and C. ichangensis Discovery and Evaluation of Natural Mixoploid（2x + 4x）Variants in Ziziphus jujuba Mill.‘Dongzao’ A New Kiwifruit Variety‘Jinxia’ A New Pear Cultivar—— ‘Huagai rang’