Results 181 to 190 of about 6,641 (219)
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Investigation of avenacin-deficient mutants of Avena strigosa
Phytochemistry, 2001The 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 R, Trojanowska +3 more
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Assignment of oat linkage groups to microdissected Avena strigosa chromosomes
Theoretical and Applied Genetics, 2002Microdissection 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
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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 B Ball
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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 B Ball
exaly +2 more sources
Seedling resistance to Puccinia coronata f. sp. avenae in Avena strigosa, A. barbata and A. sativa
Euphytica, 2013A 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 F Park
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A DESYNAPTIC MUTANT IN AVENA STRIGOSA
Canadian Journal of Genetics and Cytology, 1965A 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
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A SECONDARY TRISOMIC IN AVENA STRIGOSA
Canadian Journal of Genetics and Cytology, 1970The 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
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Meiotic chromosome association in diploid and tetraploid Avena strigosa Schrel.
Genome, 1989In diploid Avena strigosa the frequency and distribution of open (rod) bivalents suggest that a limited number of chromosomes, possibly two, fail to have a chiasma in one (short) arm in over 60% of the cells. In the tetraploid these are expected to form bivalents instead of quadrivalents at metaphase I of meiosis in a high frequency.
Zadov, S.N. +3 more
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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 ...
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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 ...
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Avenaol, a germination stimulant for root parasitic plants from Avena strigosa
Phytochemistry, 2014Root exudates from the allelopathic plant, black oat (Avena strigosa Schreb.), were found to contain at least six different germination stimulants for root parasitic plants, but no known strigolactones (SLs). One of these germination stimulants was purified and named avenaol.
Hyun Il, Kim +9 more
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