Effect of low temperature stress treatment in five selected clones of Camellia sinensis (T-17, TV-19, TV-25, TV-29, TV-30) was found to be significant. Guaiacol Pero xidase (GPX) decreased with decreasing temperature. PPO decreased with decreasing temperature showing highest activities at 20℃ in all clones. CAT activit ies decreased in T-17, TV- 29, and TV-30 with decrease in temperature with exceptions in TV-19, and TV- 25 which showed increase catalase ( CAT) and guaiacol pero xidase (GPX) activ ities. A decreasing trend of lip id pero xidation was observed in all the clones with decreasing temperature. Total phenolics content was highest in all clones at 20℃ with exception in TV- 30, wh ich showed lowest at 20℃. Total sugar content was found to be highest in all clones treated at 20℃. The present study indicates that various clones of tea showed a range of physiological and biochemical sensitivities under a lo w temperature stress
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Hrishikesh Upadhyaya (2012) studied this question.
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