Tree Display
| HOME | Text Search | Class Browser | Quick Queries | FPC Viewer | CMap Viewer | Genome Browser | WebBlast |
Tree Display |
[Submit comment/correction]
Reference Title Chromosomal assignment of RFLP linkage groups harboring
important QTLs on an intraspecific cotton (Gossypium
hirsutum L.) joinmap
Journal Journal of Heredity
Journal_code JHR
Year 2005
Volume 96 (2)
Page 132 144
Online PubMed 15618303 [PubMed]
Author Ulloa M
Saha S
Jenkins JN
Meredith WR Jr
McCarty JC Jr
Stelly DM
Type Article
Language English
Abstract Chromosome identities were assigned to 15 linkage groups of
the RFLP joinmap developed from four intraspecific cotton
(Gossypium hirsutum L.) populations with different genetic
backgrounds (Acala, Delta, and Texas Plains). The linkage
groups were assigned to chromosomes by deficiency analysis
of probes in the previously published joinmap, based on
genomic DNA from hypoaneuploid chromosome substitution
lines. These findings were integrated with QTL
identification for multiple fiber and yield traits. Overall
results revealed the presence of 63 QTLs on five different
chromosomes of the A subgenome (chromosomes-03, -07, -09,
-10, and -12) and 29 QTLs on the three different D subgenome
(chromosomes-14 Lo, -20, and the long arm of -26). Linkage
group-1 (chromosome-03) harbored 26 QTLs, covering 117 cM
with 54 RFLP loci. Linkage group-2, (the long arm of
chromosome-26) harbored 19 QTLs, covering 77.6 cM with 27
RFLP loci. Approximately 49% of the putative 92 QTLs for
agronomic and fiber quality traits were placed on the above
two major joinmap linkage groups, which correspond to just
two different chromosomes, indicating that cotton
chromosomes may have islands of high and low meiotic
recombination like some other eukaryotic organisms. In
addition, it reveals highly recombined and putative gene
abundant regions in the cotton genome. QTLs for fiber
quality traits in certain regions are located between two
RFLP markers with an average of less than one cM
(0.4[approximately]0.6 Mb) and possibly represent targets
for map-based cloning. Identification of chromosomal
location of RFLP markers common to different intra- and
interspecific-populations will facilitate development of
portable framework markers, as well as genetic and physical
mapping of the cotton genome.
Refers_to Mapping_data MD-5678ne x Prema, F2.3 (2000)
HQ95-6 x MD51ne, F2.3 (2002)
DES 119-5 x MD51ne, F2.3 (2002)
HS-46 x MARCABUCAG8US-1-88, F2.3 (1998)
Keyword[Show (25)]
| CottonDB Home Page | 
Disclaimers |
Contact CottonDB Curator |