Distribution patterns of nutrients in different positions of 5 oat varieties at different breeding periods Effects of Exogenous Putrescine on PSⅡ Photochemistry and Ion Distribution of Cucumber Seedlings Under Salt Stress Effects of iron stress on growth, physiological character and iron distribution of the three citrus rootstocks Type of Distribution and Method of Density Estimation for Pantana phyllotachysae Studies on the Biological Characters of the Chinese Pear Sucker, Psylla chinesis PLANT DISTRIBUTION IN FRESHWATER LAKESHORE: RELATIVE IMPORTANCE OF SPECIES POOL LIMITATION VS. NICHE LIMITATION Investigation on effects for genotypes and region distribution to the grain amino acid contents of winter wheat Growing Season Distribution of Tissue Fructan in Wheat The 21/2 rule for controlling the tree pattern in forest cutting Effect of population distribution on yield and water use efficiency in summer soybean Effects of NaCl stress on organ compartmental allocation of K+, Na+ and Cl- and growth of two Dendranthema species seedlings