Phylogeny of Catalpa (Bignoniaceae) inferred from sequences of chloroplast ndhF and nuclear ribosomal DNA Development of Male and Female Gametophytes between Fertile Line and Male Sterile Line’s Flowers of Catalpa bungei C.A.Meyer. An Elite Variety of Catalpa bungei ‘Wanqiu 8402’ Study on Characteristic Differences of Catalpa bungei Clones in vitro Culture A new benzofuran in Catalpa ovata Isolation and Identification of Bioactive Compounds with Antioxidant from Catalpa bungei A Study on Nuclear Inclusion in the Cells of Flowers and Leaves of Catalpa Interactive effects of soil water and fertilizer application on leaf net photosynthetic rate and SPAD readings of Catalpa bungei seedlings Physiological Response to Drought Stress of Four Kinds of Stocks Grafted Seedlings of Catalpa bungei cl.‘Yu-1’ Chemical constituents in fruits of Catalpa ovata Relation between the Growth of Young Stand of Catalpa bungei and the Site Conditions of Low Mountain and Hilly Region Effects of exponential fertilization on biomass allocation and root morphology of Catalpa bungei clones Morphological and Anatomical Studies of Floral Organogenesis and Development in Catalpa speciosa Effects of Nitrogen Exponential Fertilization on Photosynthetic Characteristics of Three Catalpa bungei Clones Studies on Photosynthetic Characteristics of Three Clones of Catalpa bungei under Various Salt Stress Interspecific Hybridization of Catalpa bungei and Catalpa fargesii f. duclouxii Rooting Response of Catalpa bungei Softwood Cutting to Different Hormone Treatments and Medium Mixture Change of Nutrient Content and Oxidase Activities during Rooting of Catalpa bungei cl.‘Yu 1‘ Pollen Morphology of Several Species in Catalpa and Its Taxonomic Significance An Elite Variety of Catalpa bungei ‘Wanqiu 8401’ Morphological and Anatomical Studies of Floral Organogenesis and Development in Catalpa speciosa Genetic Diversity of Growth and Leaf Traits of Catalpa bungei Study on Polyphenol Content and Antioxidant Activity from Twelve Clones of Catalpa bungei Leaves Research of Below and Above-ground Competitions in Catalpa ovata Seedlings An Elite Variety of Catalpa bungei ‘Yunduo’ Timber Physical and Mechanical Properties of New Catalpa bungei Clones Coupling Effects of Soil Water and Fertilizer Application on Leaf δ13C of Catalpa bungei Seedlings Variation of Nitrogen Utilization among Catalpa bungei Clones at Nursery Stage and High-Yield Clones Selection Growth Traits of One-Year-Old Catalpa bungei Clones in Seedling Stage Nitrogen distribution and efficiency difference of Catalpa bungei C. A. Mey. clones at nursery stage Expression Analysis of B-class MADS-box Genes from Catalpa speciosa A New Catalpa bungei Cultivar‘Yiqiu 1’ A New Catalpa bungei Cultivar‘Yiqiu 1’ Observation on Megasporogenesis, Microsporogenesis and Development of Female and Male Gametophytes of Catalpa speciosa Warder Anatomical Study on the Primary Vascular System of Seedling of Catalpa ovata