Effect of high night temperature on cotton respiration, ATP content and carbohydrate accumulation. Dimitra Loka

ISBN: 9780549666776

Published:

NOOKstudy eTextbook

90 pages


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Effect of high night temperature on cotton respiration, ATP content and carbohydrate accumulation.  by  Dimitra Loka

Effect of high night temperature on cotton respiration, ATP content and carbohydrate accumulation. by Dimitra Loka
| NOOKstudy eTextbook | PDF, EPUB, FB2, DjVu, AUDIO, mp3, RTF | 90 pages | ISBN: 9780549666776 | 10.39 Mb

High temperatures are considered to be one of the main environmental factors contributing to variable yields in cotton. This has been attributed to a negative effect on respiration and carbohydrate accumulation, but the evidence for this is lacking.MoreHigh temperatures are considered to be one of the main environmental factors contributing to variable yields in cotton.

This has been attributed to a negative effect on respiration and carbohydrate accumulation, but the evidence for this is lacking. In this study it was hypothesized that high night temperatures have a negative effect on cotton respiration and adenosine 5-triphosphate (ATP) levels that results in a significant loss of carbohydrates.

Two sets of growth chamber studies were conducted in order to evaluate the long-term effect (four weeks) and short-term effect (two hours) of elevated night temperatures, on respiration, leaf ATP levels and carbohydrates status. The results showed that high night temperatures increased respiration rates, which resulted in a reduction of leaf ATP levels and carbohydrates content. This was due to the immediate (two hours) effect of increasing temperatures on respiration and ATP content, whereas the effects on carbohydrates were more cumulative over a longer period of time.

Further research is needed in order to elucidate the exact effect of high night temperatures on cotton metabolism and productivity.



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