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Details van artikel 9 van 13 gevonden artikelen
| Titel: |
Interaction Between Iron Stress and Root-Zone Temperature on Physiological Aspects of Aeroponically Grown Chinese Broccoli |
| Auteur: |
He, Jie Chua, N. Y. Aminda Qin, Lin |
| Verschenen in: |
Journal of plant nutrition |
| Paginering: | Jaargang 31 (2008) nr. 1 pagina's 173-192 |
| Jaar: |
2008-01 |
| Inhoud: |
Chinese broccoli (B. alboglabra), a subtropical vegetable was first grown at 25°C root-zone temperature (RZT) while its aerial portions were exposed to the hot, fluctuating temperatures for four weeks in the tropical greenhouse. Interaction between iron (Fe) stress and RZT were then studied by exposing the plant roots to 2 different RZTs: a constant cool 25°C-RZT (CRZT) and a fluctuating hot ambient RZT (ARZT). There were three different Fe levels [full Fe (FFe), 1/2Fe, and 0Fe] in the nutrient medium supplied to plants at each RZT. Compared to plant grown at CRZT, hot ARZT resulted in decreases in shoot and root productivities, photosynthetic CO2 assimilation rate (A), stomatal conductance (gs), Fe and nitrate (NO3-) uptake and transport and nitrate reductase activity (NRA). Hot ARZT also altered root morphology. Iron stress (1/2Fe and 0Fe) caused significant reductions in all the above parameters and changed root morphology when plants were grown at CRZT compared to those grown at FFe. However, most of the parameters studied had similar values at ARZT regardless of Fe levels. These results indicate that hot ARZT may mask the effects of Fe stress on certain physiological process which was clearly elucidated at RZT. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 13 gevonden artikelen
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