Varietal Differences of Root Systems in Tea-Rooted Cutting

Japanese Journal of Crop Science

Yoriyuki NAKAMURA¹ 

关键词: Camellia sinensis L. Cutting;    Camellia sinensis L.;    Root system;    根系形態;    Tea;    挿し木;    Varietal difference;    チャ;    品種間差異;   

DOI  :  10.1626/jcs.68.408

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Varietal differences in root system morphology in tea-rooted cuttings were examined by using a cylindrical net (radius of 3 cm) in a nursery bed. To determine the spatial distribution of the root, 11 tea cultivars were grown for about 9 months. The depth of the root penetration site on the net from the horizonal, the primary root length out of the net, and the root's total fresh weight were measured. The horizontal distance of the root tip from the stem, the vertical root depth, the actual root length, and the spreading angle of the root system were calculated. A principal component analysis was used to identify the important characteristics of the tea root system morphology. The root system morphology was primarily determined by the spatial distribution of the root and the root amount as an index of the root number and weight, in which the cultivar varied significantly. Yamanoibuki, Okuhikari, Sayamakaori, and Meiryoku formed in a relatively large root system, but Kanayamidori, Ooiwase, and Saemidori formed in a small root system. Fushun showed the large root amount and the small spreading angle of the root system ; Okumidori showed a large spreading angle of the system.

【 授权许可】

Unknown