The effect of drought stress on the dry matter production, growth rate and biomass allocation of Anthephora pubescens Nees
| Autor: | M.W. van Rooyen, N. van Rooyen, A.C. Moolman |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
reproductive allocation
Biomass (ecology) biology Phenology media_common.quotation_subject fungi food and beverages Growing season Plant Science biology.organism_classification phenology water stress Anthephora pubescens Agronomy Dry weight Dry matter Growth rate biomass allocation Reproduction leaf allocation primary production media_common |
| Zdroj: | South African Journal of Botany. 62:41-45 |
| ISSN: | 0254-6299 |
| DOI: | 10.1016/s0254-6299(15)30576-7 |
| Popis: | The effect of drought stress on the dry matter production, growth rate and biomass allocation of Anthephora pubescens Nees was examined at three phenological stages, i.e. vegetative stage (P1), initiation of reproduction (P2) and late reproductive stage (P3). Relative to control plants, total dry mass of P1, P2 and P3 plants, harvested after an 8-day post-stress recovery period, was reduced by 78%, 60% and 35% respectively. However, at the end of the growing season, there were no differences (P > 0.05) in total dry matter accumulation between stressed and nonstressed plants: This recovery of A. pubescens can possibly be explained by the phenotypic plasticity in leaf allocation in stages P1 and P2, and by the increase in the leaf area ratio of P1 and P2 plants, following drought stress. |
| Databáze: | OpenAIRE |
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