J R Witcombe
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Explore the profile of J R Witcombe including associated specialties, affiliations and a list of published articles.
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Recent Articles
1.
Witcombe J, Murphy P
Theor Appl Genet
. 2013 Nov;
71(5):736-41.
PMID: 24247610
Covered and naked barleys from the Himalaya differ significantly from each other in a multivariate way (Murphy and Witcombe 1986). Two hypotheses which could account for this phenomenon are (1)...
2.
Murphy P, Witcombe J
Theor Appl Genet
. 2013 Nov;
71(5):730-5.
PMID: 24247609
Both reciprocal averaging and discriminant analysis confirm visual impressions that covered and naked barleys from several areas in the Himalaya differ significantly from each other in a multivariate way. Discriminant...
3.
Liu C, Witcombe J, Pittaway T, Nash M, Hash C, Busso C, et al.
Theor Appl Genet
. 2013 Nov;
89(4):481-7.
PMID: 24177898
Analysis of a sample of diverse pearl millet genotypes with 200 genomic DNA probes revealed this crop species to be extremely polymorphic. Among these genotypes, 85% of probes detected polymorphism...
4.
Busso C, Liu C, Hash C, Witcombe J, Devos K, de Wet J, et al.
Theor Appl Genet
. 2013 Nov;
90(2):242-6.
PMID: 24173897
Sex as a factor affecting recovered recombination in plant gametes was investigated in pearl millet, Pennisetum glaucum, by using reciprocal three-way crosses [(AxB)xCvCx(A x B)]. The two populations were mapped...
5.
JONES E, Liu C, Gale M, Hash C, Witcombe J
Theor Appl Genet
. 2013 Oct;
91(3):448-56.
PMID: 24169834
Quantitative trait loci (QTLs) for resistance to pathogen populations of Scelerospora graminicola from India, Nigeria, Niger and Senegal were mapped using a resistant x susceptible pearl millet cross. An RFLP...
6.
Liu C, Devos K, Witcombe J, Pittaway T, Gale M
Theor Appl Genet
. 2013 Oct;
93(5-6):902-8.
PMID: 24162424
The effects of homoeology and sex on recombination frequency were studied in crosses between cultivated pearl millet, Pennisetum glaucum, and two wild subspecies, P. violaceum and P. mollissimum. For the...
7.
Steele K, PRICE A, Witcombe J, Shrestha R, Singh B, Gibbons J, et al.
Theor Appl Genet
. 2012 Sep;
126(1):101-8.
PMID: 22968512
Altering root morphology of rice (Oryza sativa L.) cultivars could improve yields in drought-prone upland ecosystems. Marker-assisted backcross breeding was used to introgress four QTLs for root traits into an...
8.
Witcombe J, Hollington P, Howarth C, Reader S, Steele K
Philos Trans R Soc Lond B Biol Sci
. 2007 Sep;
363(1492):703-16.
PMID: 17761467
Using cereal crops as examples, we review the breeding for tolerance to the abiotic stresses of low nitrogen, drought, salinity and aluminium toxicity. All are already important abiotic stress factors...
9.
Steele K, PRICE A, Shashidhar H, Witcombe J
Theor Appl Genet
. 2005 Oct;
112(2):208-21.
PMID: 16208503
A marker-assisted back-crossing (MABC) breeding programme was conducted to improve the root morphological traits, and thereby drought tolerance, of the Indian upland rice variety, Kalinga III. This variety, the recurrent...
10.
Steele K, Edwards G, Zhu J, Witcombe J
Theor Appl Genet
. 2004 Aug;
109(6):1247-60.
PMID: 15300383
Conventional methods for quantitative trait locus (QTL) mapping require the selection of particular traits to be measured based on assumptions as to their importance. We have tested an alternative approach...