Tolerance of Mango (Mangifera indica L. Anacardiaceae) seedling to different levels of aluminum

Issue Date

12-2009

Abstract

The tolerance of ' Carabao', 'Pico', 'Pahutan' and ' Kachamitha' mango seedling to varying levels of aluminum (Al): 0, 250 and 500 μM AlCl₃ was evaluated for 22 weeks in a pot experiment using Lipa clay loam soil with an initial pH of 6.9. The application of 500 μM AlCl₃ reduced total root length, root length density and specific root length of mango seedlings. Leaf fresh weight, leaf dry weight and stem dry weight were also reduced due to Al treatments. 'Carabao' mango seedling had the highest specific root length and shoot root ratio, while 'Kachamitha' had the highest stem diameter, root volume and root dry weight. Although the exchangeable soil Al was below the detectable level, application of 500 μM AlCl₃ decreased the soil pH from 6.5 to 6.3. Highest Al and Iron (Fe) concentrations in the leaves were observed in 500 μM AlCl₃ while, Al Fe and Manganese (Mn) concentrations in the roots did not vary with Al treatments. 'Kachamitha' exhibited the best root growth compared to the others varieties. Having the lowest Al concentration in the roots and highest in the leaves, 'Katchamitha' was considered tolerant to high soil Al levels.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

34

Issue

3

Page

33-42

Document Type

Article

Frequency

tri-quarterly

Physical Description

graphs, tables

Language

English

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