Biochemical mechanisms associated with low yield during stress in Hevea clone RRII 105

Sreelatha S., . and Simon S.P., . and Kurup G.M., . and Vijayakumar K.R., . and Okore I. K., . and Akpobome F. A., . and Tijani-Eniola H., . and Oghide E. A., . Biochemical mechanisms associated with low yield during stress in Hevea clone RRII 105. pp. 197-115. ISSN 1511-1768

Variation in yield latex physiological parameters enzymes involved in carbohydrate and thiol metabolism antioxidant enzymes and enzymes related to cessation of latex flow were studied in clone RRII 105 during peak yielding and low yielding stress (summer) seasons. A significant reduction in dry rubber yield was observed during the stress period compared to the peak yielding season. Latex flow characteristics metabolism of carbohydrate and thiols and activities of antioxidant enzymes showed significant variation between seasons. The present study revealed that even though thiol metabolism is activated during stress decline in cytosolic invertase superoxide dismutase catalase and B-serum N-acetyl glucosaminidase activity lead to lower yield during the stress period in clone RRII 105. The significance of these physiological and biochemical parameters are discussed in relation to yield obtained during the peak yielding and stress seasons.

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Abstract

Variation in yield latex physiological parameters enzymes involved in carbohydrate and thiol metabolism antioxidant enzymes and enzymes related to cessation of latex flow were studied in clone RRII 105 during peak yielding and low yielding stress (summer) seasons. A significant reduction in dry rubber yield was observed during the stress period compared to the peak yielding season. Latex flow characteristics metabolism of carbohydrate and thiols and activities of antioxidant enzymes showed significant variation between seasons. The present study revealed that even though thiol metabolism is activated during stress decline in cytosolic invertase superoxide dismutase catalase and B-serum N-acetyl glucosaminidase activity lead to lower yield during the stress period in clone RRII 105. The significance of these physiological and biochemical parameters are discussed in relation to yield obtained during the peak yielding and stress seasons.

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Item Type:	Article
AGROVOC Term:	Hevea
AGROVOC Term:	Clones
AGROVOC Term:	Latex
AGROVOC Term:	Invertase
AGROVOC Term:	Sucrose
AGROVOC Term:	Thiols
AGROVOC Term:	Antioxidants
AGROVOC Term:	Yields
AGROVOC Term:	Stress
AGROVOC Term:	Rubber industry
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23077

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