Parent selection for oil palm clonal seed gardens

Breure C.J., . and Konimor J., . (1992) Parent selection for oil palm clonal seed gardens. [Proceedings Paper]

Quantitative genetical information on the selection of elite oil palm families in three steps was derived from records of dura female and pisifera male parents and their offspring planted at Dami Oil Palm Reserach Station Papua New Guinea. These three steps were :- 1 selection of dura and pisifera parents on the basis of their performance per se; 2 progeny testing of these provisionally selected parents to determine their General Combining Ability GCA values and 3 testing of families obtained by intercrossing parents finally selected on the basis of GCA values and identification of elite families. Guidelines for single palm selection were obtained from a multiple regression analysis using as predictors 1 oil-and-kernel yield and 2 Harvest Index HI of the offspring GCA values of parental palm for leaf Mg-content LMg height leaf area ration LAR leaf area frond production rachis length frond weight vegetative dry matter production VDM and the relative rate of increase in the logistic equation of leaf area against age k. This showed that HI may be increased by selection for high LAR LMg and k; and low frond production. Reducing frond production may also increase oil-and-kernel yield per palm but the main predictors of these yield characters were leaf and height. As these two traits mainly determine the ability to compete for light with neighbouring palms it is concluded that leaf area and height should be taken into account when selection for yield per palm is at issue. Significant correlations between female parents and offspring i.e. heritability in standard units were found for oil-to-bunch ratio 0.60 kernel-to-bunch ratio 0.94 height increment 0.46 LAR 0.56 leaf area 0.58 frond production 0.53 and LMg 0.46. Significant heritabilities were also found for these characters from the square of the correlation between GCA- and phenotypic values except for LMg. None of these correlations were significant for bunch yield

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Abstract

Quantitative genetical information on the selection of elite oil palm families in three steps was derived from records of dura female and pisifera male parents and their offspring planted at Dami Oil Palm Reserach Station Papua New Guinea. These three steps were :- 1 selection of dura and pisifera parents on the basis of their performance per se; 2 progeny testing of these provisionally selected parents to determine their General Combining Ability GCA values and 3 testing of families obtained by intercrossing parents finally selected on the basis of GCA values and identification of elite families. Guidelines for single palm selection were obtained from a multiple regression analysis using as predictors 1 oil-and-kernel yield and 2 Harvest Index HI of the offspring GCA values of parental palm for leaf Mg-content LMg height leaf area ration LAR leaf area frond production rachis length frond weight vegetative dry matter production VDM and the relative rate of increase in the logistic equation of leaf area against age k. This showed that HI may be increased by selection for high LAR LMg and k; and low frond production. Reducing frond production may also increase oil-and-kernel yield per palm but the main predictors of these yield characters were leaf and height. As these two traits mainly determine the ability to compete for light with neighbouring palms it is concluded that leaf area and height should be taken into account when selection for yield per palm is at issue. Significant correlations between female parents and offspring i.e. heritability in standard units were found for oil-to-bunch ratio 0.60 kernel-to-bunch ratio 0.94 height increment 0.46 LAR 0.56 leaf area 0.58 frond production 0.53 and LMg 0.46. Significant heritabilities were also found for these characters from the square of the correlation between GCA- and phenotypic values except for LMg. None of these correlations were significant for bunch yield

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Item Type:	Proceedings Paper
Additional Information:	6 tables 1 appendix 19 ref. Summary En
AGROVOC Term:	ELAEIS GUINEENSIS
AGROVOC Term:	CLONES
AGROVOC Term:	SELECCION
AGROVOC Term:	PAPUA NUEVA GUINEA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15067

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