Responses of Hevea brasiliensis Muell. Arg. plants to low temperatures under controlled conditions
In this study we have examined the responses of Hevea plants to low temperatures in growth chambers simulating winter conditions in the tropics. The low temperatures increased the leaf diffusive resistance even with a rise in the leaf temperatures toward the end of day. The total chlorophyll levels...
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| Published in | International journal of biometeorology Vol. 37; no. 4; pp. 203 - 206 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
01.12.1993
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| Subjects | |
| Online Access | Get more information |
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| Abstract | In this study we have examined the responses of Hevea plants to low temperatures in growth chambers simulating winter conditions in the tropics. The low temperatures increased the leaf diffusive resistance even with a rise in the leaf temperatures toward the end of day. The total chlorophyll levels were reduced by chilling, with no changes in the chlorophyll a/b ratio. Neither organic solute nor electrolyte leakage were observed at low temperatures. These results explain the low growth rate of plants and the lack of serious chilling symptoms necrosis) in mature leaves during winter conditions near latitude 22 degrees S in Brazil. |
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| AbstractList | In this study we have examined the responses of Hevea plants to low temperatures in growth chambers simulating winter conditions in the tropics. The low temperatures increased the leaf diffusive resistance even with a rise in the leaf temperatures toward the end of day. The total chlorophyll levels were reduced by chilling, with no changes in the chlorophyll a/b ratio. Neither organic solute nor electrolyte leakage were observed at low temperatures. These results explain the low growth rate of plants and the lack of serious chilling symptoms necrosis) in mature leaves during winter conditions near latitude 22 degrees S in Brazil. |
| Author | Lemos Filho, J.P. de Rocha Neto, O.G. da Pinto, H.S |
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| Snippet | In this study we have examined the responses of Hevea plants to low temperatures in growth chambers simulating winter conditions in the tropics. The low... |
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| SubjectTerms | air temperature chilling injury chlorophyll Hevea brasiliensis leaf diffusion resistance membrane permeability tropics winter |
| Title | Responses of Hevea brasiliensis Muell. Arg. plants to low temperatures under controlled conditions |
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