Akhmad Zubaidi, Akhmad Zubaidi and Glenn K McDonald, G. K McDonald Exposing roots to high levels of boron reduces stomatal conductance in wheat and faba bean. Tsinghua University Press.
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Plant Nutrition for Food Security IPNC 2005 Beijing.pdf Download (31MB) | Preview |
Abstract
Many soils used for crop production in southem Australia contain high concentrations of available boron that can be phytotoxic. The spatial variability of soil B is high and plants can be exposed to a range on B concentrations over relatively short distances and periods of time. Three experiments were conducted with wheat (Triticum aestivum) and faba bean (Vicia faba) to examine the short-term responses to different concentrations of B in soil and solution culture. In each experiment stomatal conductance (g") was reduced by up to 5O% by concentrations of B between I and 8 mM. The sensitivity of g, to B was greater in hydroponics than in soil. The reduction in g, occurred within 24 h of exposure to B and was not associated with a change in the leaf relative water content (RWC) and there were no visual symptoms of B toxicity. There is an immediate response when plants encounter high levels of B in the root zone and this occurred well before any extemal signs of B toxicity were evident. The response is independent of plant water status.
| Item Type: | Other |
|---|---|
| Keywords (Kata Kunci): | water stress, water use |
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Fakultas Pertanian |
| Depositing User: | . Salahudin, A.Md.,S.Adm. , |
| Date Deposited: | 06 Jun 2021 12:01 |
| Last Modified: | 06 Jun 2021 12:01 |
| URI: | http://eprints.unram.ac.id/id/eprint/21932 |
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