Studies on heterosis of vernal hybrid F_1 of male sterile lines of Ven & K Typeal wheat and their relationship with chlorophyll content and zymogram of isoenzyme Identification and Morphological Analysis of a Rice Chromosome Segment Substitution Line Carrying a Major Effect Gene for Late Heading Date and Mapping of Ehd4-2 Studies on the Photosynthesis of Some Species of Camellia Effect of Simulated Acid Rain and Its Acidified Soil on the Biomass and Some Physiological Activities of Wheat Seedlings Ultrastructure of Chloroplast and Photosynthetic Properties of the Leaves at Different Position in Maize The effects of nutrient solution injected on the morphology and physiology of apple trees and quality of the fruit THE EFFECT OF RARE-EARTH ELEMENTS ON PHYSIOLOGICAL CHARACTERISTICS OFROBINIA PSEUDOAEACIO SEEDLINGS Physiological responses of five deciduous broad-leaved tree seedlings in the Northeast Area of China to burning Physiological response of chlorophyll fluorescence in moss Plagiomnium cuspidatum to mixture heavy metal solution Study on Leaf Ultrastructure of the Thermo-sensitive Chlorophyll Deficient Mutant in Rice Effects of Ca2+ on photosynthetic parameters of Pinellia ternata and accumulations of active components in heat stress