The arbuscular mycorrhiza fungsi for rehabilitation of matured cocoa trees: growth and physiologycal responses

Rini M.V., . and Azizah Hashim, . and Jamal Talib, . (1998) The arbuscular mycorrhiza fungsi for rehabilitation of matured cocoa trees: growth and physiologycal responses. [Proceedings Paper]

The effect of mixed arbuscular mycorrhiza AM inoculum Glomus mosseae and Scutellospora calospora on gowth and physiology of cocoa was evaluated in the field. A split-plot design experiment was used with AM treatment as the main plot and cocoa clones as the subplot. Five selected cocoa clones viz. KKM3 KKM4 KKM5 PBC 137 and PBC 178 were grafted onto nine-year-old cocoa hybrid U1T1 X Na32 tress. The data were collected at 3 5 and 7 months after the AM inoculation. Inoculated clones showed better and significant plant with longer scion lengths and larger area index compared to uninoculated ones. The crop physiology was also significantly affected by AM with higher relative water and chlorophyll content in the leaf and lower stomatal resistance. Amongst the clones PBC 137 in particular proves to be far superior to the KKM clones. The most interesting observation as a result of AM inoculation was inoculated PBC clones started to flower 8 1/12 months after grafting while the KKM clones flowered 12 months after grafting.

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Abstract

The effect of mixed arbuscular mycorrhiza AM inoculum Glomus mosseae and Scutellospora calospora on gowth and physiology of cocoa was evaluated in the field. A split-plot design experiment was used with AM treatment as the main plot and cocoa clones as the subplot. Five selected cocoa clones viz. KKM3 KKM4 KKM5 PBC 137 and PBC 178 were grafted onto nine-year-old cocoa hybrid U1T1 X Na32 tress. The data were collected at 3 5 and 7 months after the AM inoculation. Inoculated clones showed better and significant plant with longer scion lengths and larger area index compared to uninoculated ones. The crop physiology was also significantly affected by AM with higher relative water and chlorophyll content in the leaf and lower stomatal resistance. Amongst the clones PBC 137 in particular proves to be far superior to the KKM clones. The most interesting observation as a result of AM inoculation was inoculated PBC clones started to flower 8 1/12 months after grafting while the KKM clones flowered 12 months after grafting.

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Item Type:	Proceedings Paper
AGROVOC Term:	VESICULAR ARBUSCULAR MYCORRHIZAE
AGROVOC Term:	FUNGI
AGROVOC Term:	THEOBROMA CACAO
AGROVOC Term:	PLANT PHYSIOLOGY
AGROVOC Term:	GLOMUS MOSSEAE
AGROVOC Term:	SCUTELLOSPORA
AGROVOC Term:	INOCULATION
AGROVOC Term:	SAMPLING
AGROVOC Term:	DATA COLLECTION
AGROVOC Term:	GROWTH
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16330

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