Quantitative Analysis of Root System in Soybean Plant (Glycine max (L.) Merrill)

Japanese Journal of Crop Science

Mitsuhiro TAGUCHI¹  Noriyuki TANAKA¹  Susumu ARIMA¹  Fumitake KUBOTA¹ 

关键词: Pipe model theory;    根径;    Root diameter;    根系システム;    Root length;    根重;    Root system;    根長;    Root weight;    ダイズ;    Soybean;    パイプモデル理論;   

DOI  :  10.1626/jcs.59.270

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In order to make a mathematical model for soybean root system, the length, weight and diameter of the primary and lateral roots in soybean plants grown in pots were investigated and their mutual relationships were examined. (1) The elongation and branching of roots were vigorous from early to flowering stage, and the total length of roots per plant reached a maximum of about 3, 500 m at the flowering stage. The diameter of the primary root base also with growth time and reached approximately 20 mm at the flowering stage. (2) The relationship between the diameter of primary root base and the total root weight in a plant was represented by a cubic equation with a statistically high regression coefficient. Close mutual-relationships were also found among the other root characters. (3) When the roots in a plant were classified by 1 mm range of root diameter, the relationship between the total root length within each class and the diameter of primary root base was represented by the equation: F=4.78·D3.45·X4.8. Where F is the total length within a certain root diameter class, X is the class value of root diametcr and D is the diameter of the primary root base. The equation is applicable to the soybean root system at any growth stage. The relationship between the root length and the root diameter in a plant at various growth stages may be obtained by substituting the diameter of the primary root base into the equation.

【 授权许可】

Unknown