Studies on the Stiffness of Culms in Barly Plants (Hordeum sativum, JESSEN) : 5. Effects of shading on development in culms.

[摘要] Development in culms of Sekitorisai-No. 1 (brittle culm variety) and Haganemugi (stiff culm variety) was influenced by shading during 4 periods (culm elongation stage, heading stage, milk stage, and paste stage). The solar radiation was diminished to 50 % of non-treatment. Consequently, dry matter production was lowered and the injurious effects on the stiffness of culms were recognized in heading stage treatment. The treatment in paste stage effected slightly to culm growth, and then lodging was not observed in the fields at all. The effect of treatment were more slight in Haganemugi than that in Sekitorisai-No. 1. Generally, the bending moment was lowered by shading, and the tendency was paralleled with the progress of dry matter production.

[学科分类] 农业科学（综合）