Results 161 to 170 of about 23,046 (202)

Investigation of avenacin-deficient mutants of Avena strigosa

Phytochemistry, 2001
The biosynthesis of cyclic triterpenoids in ten saponin-deficient (sad) mutant varieties of the diploid oat Avena strigosa is reported. Two mutants were found to be deficient in 2,3-oxidosqualene:beta-amyrin cyclase (OSbetaAC) (EC 5.4.99) and thus unable to produce the beta-amyrin necessary for the production of avenacins. The other mutants studied had
M J Daniels, A E Osbourn, David R Threlfall   +2 more
exaly   +3 more sources

Assignment of oat linkage groups to microdissected Avena strigosa chromosomes

Theoretical and Applied Genetics, 2002
Microdissection of metaphase chromosome preparations of diploid oat Avena strigosa (2n = 14) allowed isolation of the three individual chromosomes with distinct morphologies, numbers 2, 3 and 7. Using a PCR approach based on the DNA of microdissected chromosomes, STS derivatives of RFLP markers, genetically mapped in Avena spp.
Yolanda Loarce, A Fominaya, G Künzel
exaly   +3 more sources

Morphometric Analysis of Inflorescence Phytoliths Produced by Avena sativa L. and Avena strigosa Schreb

Economic Botany, 2006
Morphometric analysis, the study of measurements of size and shape, has the potential to be an effective tool for phytolith analysis. This study reports the first attempt to apply the methodology to oats. In particular, this study was designed to determine if morphometric analysis could adequately discriminate between phytoliths produced in the ...
Marta Portillo, Terry Ball
exaly   +2 more sources

Oats (Avena strigosa) as winter forage for dairy cows in Vietnam: an on-farm study

Tropical Animal Health and Production, 2012
In North Vietnam, during winter, alternative forage resources are needed to balance the feed ration of dairy cows. The objective of this study was to investigate the effect of oat forage as a component of traditional winter roughage diets on feed intake, milk production and feeding cost in dairy cows.
Philippe Lecomte, Didier Richard
exaly   +4 more sources

Seedling resistance to Puccinia coronata f. sp. avenae in Avena strigosa, A. barbata and A. sativa

Euphytica, 2013
A study was carried out in which seedling resistance to the crown rust pathogen, Puccinia coronata f. sp. avenae (Pca), was characterised among 385 oat accessions of Avena strigosa, A. barbata and A. sativa from the USDA-ARS National Small Grains Collection.
Robert Park
exaly   +2 more sources

A DESYNAPTIC MUTANT IN AVENA STRIGOSA

Canadian Journal of Genetics and Cytology, 1965
A strain of diploid oats, Avenn stl-igosn Schreb. (2n = 14) C.I. 4748, was crossed with its autotetraploid form (2n = 28) produced by colcl~icine treatment. T h e F, triploid ss were reoularlv forrned. I L1 i This plant proved to be heterozygous for a gene which in the recessive condition was responsible for partial desynapsis.
P. L. Dyck, Tibor Rajhathy
openaire   +1 more source

A SECONDARY TRISOMIC IN AVENA STRIGOSA

Canadian Journal of Genetics and Cytology, 1970
The pairing behaviour of the chromosomes and the morphology of a secondary trisomic plant is briefly described. The plant was male and female sterile caused presumably by a deleterious dosage effect.
Tibor Rajhathy, George Fedak
openaire   +1 more source

Isolation and mapping of resistance gene analogs from the Avena strigosa genome

Theoretical and Applied Genetics, 2004
Degenerate primers based on conserved regions of the nucleotide binding site (NBS) domain (encoded by the largest group of cloned plant disease resistance genes) were used to isolate a set of 15 resistance gene analogs (RGA) from the diploid species Avena strigosa Schreb. These were grouped into seven classes on the basis of 60% or greater nucleic acid
M L, Irigoyen, Y, Loarce, A, Fominaya, E, Ferrer   +3 more
openaire   +2 more sources

TRISOMICS OFAVENA STRIGOSA

Canadian Journal of Genetics and Cytology, 1975
A set of seven primary trisomics and seven derived types were produced in Avena strigosa Schreb., a diploid oat species. Each trisomic type had a distinct phenotype. The primary trisomics were identified on the basis of plant and chromosome morphology. Although fertility (seed-set) and the frequency of transmission of the extra chromosome varied among ...
openaire   +1 more source

Genetic control of bivalent pairing in the Avena strigosa polyploid complex

Chromosoma, 1973
Bivalent pairing in the tetraploid oat A. barbata, the main tetraploid form of A. strigosa polyploid complex, was found to be determined by a single recessive gene in quadriplex condition. This gene segregated in tetrasomic fashion in the A. barbata × A. strigosa autopolyploid, which indicates conspicuously autopolyploid origin of A.
openaire   +2 more sources