Distribution of Allelic Variation for Genes of Vernalization and Photoperiod among Wheat Cultivars from 23 Countries Study on Bud Types and Rules of Flower Bud Differentiation and Branches‘ Forming in Yulania wugangensis Agronomic characters and their correlations with yield in summer soybean varieties of different growth habits STUDIES ON FRUIT SETTING AND FRUIT GROWTH HABIT OF AKEBIA TRIFOLIATA UNDER ARTIFICIAL CULTIVATION