Reference "Identification of quantitative trait loci using a small sample of topcrossed and F4 progeny from maize"

Reference ID

9418

Title

Identification of quantitative trait loci using a small sample of topcrossed and F4 progeny from maize

Source

Crop Science, 1994, vol. 34, pp. 882-896

Authors (4)

Beavis-WD	Smith-OS
Grant-D	Fincher-R

Abstract

This study was conducted to determine if regions of the genome associated with
variability of agronomically important traits could be identified by a small,
but typical, sample of topcrossed and F2:4 progeny from the cross B73 x MO17.
Genomic regions were identified for 24 agronomic traits using interval mapping
and simultaneous estimation of multiple quantitative trait locus models. The
estimated numbers of quantitative trait loci (QTL) identified per trait was
about three to five. Many of the identified QTL were the same for correlated
traits. Interestingly, yield QTL were not in the same regions as reported for
B73 x MO17 in a previous study. This is thought likely to be due to the fact
that both studies were based on a small number of independently sampled lines.
It is suggested that both studies probably identified a subset of the yield QTL
in B73 x MO17. The lack of correspondence between the studies indicated that the
number of QTL is likely to be large.