Abstract
This observations were carried out during 1954 to 1955 to gain a preliminary fundamental information to study the anatomical effects of various external conditions to the root tissues of barley and wheat plants. Both crown and seminal rooots of naked barley and wheat undergo extensive anatomical change during their growing season ; i. e., development of thickening and lignin reaction of cell membrane in endodermis, pericycle and stele parenchyma of crown and seminal roots, occurrence of thickened cell membrane inouter and inner cortex of crown root, occurrence of collapsed space in central portion of crown root, and deformation, splitting and disappearance of epidermal cell layer of seminal root. These changes were most severe during the early March and the early April. However, the degree of these changes was differ with species or cultivated locations ; for instance, the thickening of cell membrane as described above was more conspicious in naked barley than in wheat (see Fig. 1), and also more in OITA barley than in NAGASAKI and KAGOSHIMA ones (See Table 1).
