Laboratory tests for determining drought resistance in soybean (Glycine Max (L) Merrill)
Date
1981
Authors
Julito B. Aleta
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Abstract
Three laboratory methods for determining drought resistance in crop plants were evaluated using three drought resisant and one drought susceptible field tested soybean lines.
The seed germination and seedling growth test showed that the four soybean lines had similar percentage germination when treated with polyethylene glycol-6000 solution up to -5 bars of osmotic pressure. However, highly significant differences among the lines were observed in seedling characters like percentage of dry matter and length of hypocotyl and radicle.
The chlorophyll stability index (CSI) test was not able to distinguish drough resistant from drought susceptible soybean lines.
Results of the proline test of stressed plants indicated highly significant genotypic differences among the lines.
Seedling growth under high osmotic pressure and proline accumulation in stressed leaves were good determinants in evaluating drought susceptible from drought resistant soybean lines.
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Research Subject Categories::FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Plant production::Agronomy