Effects of physical and chemical factors on the growth and neutral lipid content of Nitzschia palea Study on the Fern Genus Polystichum Roth Sect. Lasiopolystichum Daigobo from China Comparison on Leaf Phenotypic and Anatomical Structures of Polygonum paleaceum along Altitudinal Gradients at Yulong Mountains Studies on the Mechanism of the Anthesis of Rice Ⅲ.Structure of the Lodicule and Changes of Its Contents during Flowering Genetic Analysis and Molecular Tagging of a Gene for Palea Mutant in japonica Rice Variety Zhejing 22 Studies on Rice Quality of a Beak-shaped Glume Mutant