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Effects of Defoliation on Sex Differentiation in Oil Palm Clones

Published online by Cambridge University Press:  03 October 2008

R. H. V. Corley ,
M. Ng  and
C. R. Donough
R. H. V. Corley
Affiliation:
Unilever Plantations and Plant Science Group, Maris Lane, Trumpington, Cambridge CB2 2LQ, England,
M. Ng
Affiliation:
Pamol Plantations Sdn Bhd, Kluang, Johor, Malaysia
C. R. Donough
Affiliation:
Pamol Plantations Sdn Bhd, Kluang, Johor, Malaysia
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Summary

Defoliation affected inflorescence production by oil palms, causing a decrease in sex ratio (ratio of female inflorescences to total) and an increase in abortion rate. Clones differed in response to defoliation. One of seven clones showed no increase in abortion rate; in one clone there was a tendency for female inflorescences to abort in greater numbers than males. The change in sex ratio occurred much sooner after defoliation in some clones than in others, and comparison of flowering records with dissections done at the time of defoliation indicated that inflorescence sex was affected at more than one stage in development. This has important consequences for attempts to predict yields.

Type
Research Article
Information
Experimental Agriculture , Volume 31 , Issue 2 , April 1995 , pp. 177 - 190
Copyright
Copyright © Cambridge University Press 1995

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