Induction of precocious flowering in Hevea brasiliensis rubber tree by the combined effects of girdling and paclobutrazol

Yeang H.Y., . and Sivanadyan K., . and Choo C.L., . and Mohd Noor Abdul Ghani, . Induction of precocious flowering in Hevea brasiliensis rubber tree by the combined effects of girdling and paclobutrazol. pp. 220-230. ISSN 0127-7065

While girdling or paclobutrazol treatment could individually induce precocious flowering in Hevea brasilensis a combination of both treatments gave rise to an enhanced effect. The supplementation of high nitrogen fertilizer to these treatments did not increase precocious flowering. Compared with the Wickham clones clones from the 1981 Germplasm collection showed a recalcitrance to flower-induction probably because of their state of juvenility. Induced male flowers could be successfully used for hand-pollination whereas induced female flowers tended to give poor fruit-set. Paclobutrazol treatment had a side-effect in causing 'bark-burst' (splitting and flaking of the bark) in some of the Germplasm plants although this was rarely observed among the Wickham clones. Repeated girdling was observed to have a protective effect against bark burst

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Abstract

While girdling or paclobutrazol treatment could individually induce precocious flowering in Hevea brasilensis a combination of both treatments gave rise to an enhanced effect. The supplementation of high nitrogen fertilizer to these treatments did not increase precocious flowering. Compared with the Wickham clones clones from the 1981 Germplasm collection showed a recalcitrance to flower-induction probably because of their state of juvenility. Induced male flowers could be successfully used for hand-pollination whereas induced female flowers tended to give poor fruit-set. Paclobutrazol treatment had a side-effect in causing 'bark-burst' (splitting and flaking of the bark) in some of the Germplasm plants although this was rarely observed among the Wickham clones. Repeated girdling was observed to have a protective effect against bark burst

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Item Type:	Article
Additional Information:	Summary (En)
AGROVOC Term:	HEVEA BRASILIENSIS
AGROVOC Term:	FLORACION INDUCIDA
AGROVOC Term:	PACLOBUTRAZOL
AGROVOC Term:	MALASIA
AGROVOC Term:	CLONES
AGROVOC Term:	GERMOPLASMA
AGROVOC Term:	PLANTON DE VIVERO
AGROVOC Term:	FRUCTIFICACION
AGROVOC Term:	ABONOS NITROGENADOS
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:56
URI:	http://webagris.upm.edu.my/id/eprint/20673

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