Physiological mechanisms for acid-soil tolerance of upland rice in the savanna of South America

Country
Latin America

Description

[Synopsis]

The Physiological mechanisms controlling genotypic differences of upland rice in tolerance to acid-soils were investigated in the savanna of South America. It was found that the soil pH decreased to 4.3 during crop growth, and the Al concentration in the soil solution increased to the level which brought about direct toxic effect on root growth. The tolerant genotypes the rhizosphere showed a slightly higher pH were able to avoid Al toxicity.

Affiliation

Japan International Research Center for Agricultural Sciences Biological Resources Division

International Center for Tropical Agriculture

Classification

Technical A

Term of research

FY1995(FY1992-FY1995)

Responsible researcher

OKADA Kensuke ( Biological Resources Division )

FISCHER Albert ( International Center for Tropical Agriculture )

GUMARAES Elcio ( International Center for Tropical Agriculture )

ほか
Publication, etc.

Japanese PDF

1995_05_A3_ja.pdf1.02 MB