Greener Journal of Agricultural Sciences

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Hamza et al

Greener Journal of  Agricultural Sciences Vol. 3 (7), pp. 557-562, July 2013.

 ISSN: 2276-7770 © 2011 Greener Journals

Research Paper

Manuscript Number: 061013662

 

Heritability Estimate for Fruit Traits in Date Palm Crosses (Phoenix dactylifera L)

 

*1Hamza A.M., 2Ado S.G., 2Usman I.S., 1Ataga C.D.,

1Odewale J.O., and 1Agho Collins

 

1Plant Breeding Division, Nigerian Institute for Oil Palm Research (NIFOR). P.M.B.1030 300001, Benin City, 

Edo State, Nigeria.

 2Department of plant sciences, I.A.R., A.B.U, Zaria, Kaduna, Nigeria.

 

*Corresponding Author’s Email: abdulnifort @ yahoo.com


Abstract:

Date palm progress derived from 60 crosses replicated twice, subjected to analysis of variance using nested design for the purpose of estimating fulsibs, broad sense and narrow sense heritability’s, genetic advance and genetic advance as percentage mean for the eight fruit traits. Positive estimates were recorded for fulsibs heritability for the traits. Broad sense heritability for the traits was high. Narrow sense estimates were low and negative indicating that the estimates were not different from zero or they were very small. Heritability indicates the effectiveness with which selection of genotype can be based on phenotypic performance, though it does not provide any indication of the amount of genetic progress that will result from selecting the best individuals. The relatively high estimates obtained for broad sense and medium estimates for fulsibs heritability suggest that variation in these traits may be attributed to a high degree of additive gene action and selection for these traits would therefore be effective and thus shows that the traits are under strong genetic control. Broad sense heritability estimate for any one trait is useful when high genetic advance in that trait is feasible, because high heritability coupled with high genetic advance is the true index for effective selection. It was necessary that expected genetic advance be estimated to know what level of improvement can be expected from selection of each of the characters examined. Pollen source has strong influence on fruits and seed characters of date palm. Among the palms used for this study, male 1R12 GPIII; 6R3 GPIII and 1R7 NCRP performed better than the rest. Mass, recurrent and backcross selection are recommended for further breeding programs in development of date palms in Nigeria.
 
Keywords: Fulsibs heritability, Broad sense heritability, Narrow sense heritability, expected genetic advance and fruits traits.

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