NDLI: Congruence in QTL for adventitious rooting in Pinus elliottii × Pinus caribaea hybrids resolves between and within-species effects

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Congruence in QTL for adventitious rooting in Pinus elliottii × Pinus caribaea hybrids resolves between and within-species effects

Content Provider	Springer Nature Link
Author	Shepherd, Mervyn Huang, Shaowei Eggler, Peter Cross, Michael Dale, Glenn Dieters, Mark Henry, Robert
Copyright Year	2006
Abstract	Targeting between-species effects for improvement in synthetic hybrid populations derived from outcrossing parental tree species may be one way to increase the efficacy and predictability of hybrid breeding. We present a comparative analysis of the quantitative trait loci (QTL) which resolved between from within-species effects for adventitious rooting in two populations of hybrids between Pinus elliottii and P. caribaea, an outbred F$_{1}$ (n=287) and an inbred-like F$_{2}$ family (n=357). Most small to moderate effect QTL (each explaining 2–5% of phenotypic variation, PV) were congruent (3 out of 4 QTL in each family) and therefore considered within-species effects as they segregated in both families. A single large effect QTL (40% PV) was detected uniquely in the F$_{2}$ family and assumed to be due to a between-species effect, resulting from a genetic locus with contrasting alleles in each parental species. Oligogenic as opposed to polygenic architecture was supported in both families (60% and 20% PV explained by 4 QTL in the F$_{2}$ and F$_{1}$ respectively). The importance of adventitious rooting for adaptation to survive water-logged environments was thought in part to explain oligogenic architecture of what is believed to be a complex trait controlled by many hundreds of genes.
Starting Page	11
Ending Page	28
Page Count	18
File Format	PDF
ISSN	13803743
Journal	Molecular Breeding
Volume Number	18
Issue Number	1
e-ISSN	15729788
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-06-29
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Marker-aided selection Rooting percentage Stem cuttings Synthetic hybrids Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Molecular Biology Biotechnology Agronomy and Crop Science

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Genetic control of adventitious rooting on stem cuttings in two Pinus elliottii × P. caribaea hybrid families

Genetic control of adventitious rooting on stem cuttings in two Pinus elliottii × P. caribaea hybrid families

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Congruence in QTL for adventitious rooting in Pinus elliottii × Pinus caribaea hybrids resolves between and within-species effects

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Congruence in QTL for adventitious rooting in Pinus elliottii × Pinus caribaea hybrids resolves between and within-species effects