Results 151 to 160 of about 13,842 (195)
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Resistance in lactuca against Bremia lactucae Regel
Euphytica, 1974After testing many Lactuca species consisting of cultivated types and wild species, 23 PIVT numbers (all accessions of wild species) were found to have resistance to the five NL races of Bremia lactucaeRegel.
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Transactions of the British Mycological Society, 1984
Eight isolates of Bremia lactucae from Lactuca serriola were tested for pathogenicity on 29 differential cultivars of Lactuca sativa and one L. sativa × L. serriola hybrid. The cultivars carried fourteen known race specific resistance factors (R1–R14) both singly and in combination, plus RO in Cobham Green.
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Eight isolates of Bremia lactucae from Lactuca serriola were tested for pathogenicity on 29 differential cultivars of Lactuca sativa and one L. sativa × L. serriola hybrid. The cultivars carried fourteen known race specific resistance factors (R1–R14) both singly and in combination, plus RO in Cobham Green.
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Genetic Resources and Crop Evolution, 1996
Patterns of achene proteins of L. sativa cultivars are mutually compared and compared with L. saligna, L. serriola and L. virosa. L. virosa and L. saligna are easy to identify and are characterized by typical banding patterns. L. sativa and L. serriola share the same banding pattern. They differ clearly from L. saligna and L. virosa. L.
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Patterns of achene proteins of L. sativa cultivars are mutually compared and compared with L. saligna, L. serriola and L. virosa. L. virosa and L. saligna are easy to identify and are characterized by typical banding patterns. L. sativa and L. serriola share the same banding pattern. They differ clearly from L. saligna and L. virosa. L.
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Sesquiterpenoids from Lactuca tatarica
Fitoterapia, 2010A new guaianolide and a new eudesmanolide were isolated from Lactuca tatarica, as well as eight known sesquiterpenoids. The new compounds were elucidated on the basis of spectroscopic methods including IR, HRESIMS, 1D and 2D NMR, and the known compounds were established by comparing their physical data with those of the corresponding compounds in the ...
Xiao-Xiong, Wang +2 more
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The behaviour of Bretnia lactucae on cultivars of Lactuca sativa and on other composites
Annals of Applied Biology, 1976SUMMARYThe spores of an isolate of Bremia lactucae obtained from lettuce germinated equally well on Cellophane and on the surfaces of all plant species inoculated. The fungus penetrated the epidermal cells of both host and non‐host plants but extensively invaded only certain lettuce cultivars.
I. R. CRUTE, C. H. DICKINSON
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The effects of chloramphenicol on Ulva lactuca
Chemosphere, 2013The administration of pharmacological substances in the food producing industry is a crucial and long established practice in ensuring animal welfare. However, a very high percentage of the drugs used will directly or indirectly be present in the various compartments of natural ecosystems therefore constituting a source of pollution. The reactions that
Sara, Leston +4 more
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Plant Physiology and Biochemistry, 2007
A plant's physiology is modified simultaneously with Oomycete pathogen penetration, starting with release and accumulation of reactive oxygen species (ROS). Localisation of superoxide, hydrogen peroxide, peroxidase and variation in their activity, and the isoenzyme profile of antioxidant enzymes peroxidase (1.11.1.7), catalase (EC 1.11.1.6), superoxide
Michaela, Sedlárová +3 more
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A plant's physiology is modified simultaneously with Oomycete pathogen penetration, starting with release and accumulation of reactive oxygen species (ROS). Localisation of superoxide, hydrogen peroxide, peroxidase and variation in their activity, and the isoenzyme profile of antioxidant enzymes peroxidase (1.11.1.7), catalase (EC 1.11.1.6), superoxide
Michaela, Sedlárová +3 more
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New sources of major gene resistance in Lactuca to Bremia lactucae
Euphytica, 1991A total of 1789 accessions of several lettuce collections was screened to find new major gene resistance to the downy mildew fungus Bremia lactucae Regel. The accessions belonged to the species Lactuca sativa (N=1288), L. serriola (N=399), L. saligna (N=52) and L. virosa (N=50). A total of 20 races of B.
F. J. M. Bonnier +2 more
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Physiological and Molecular Plant Pathology, 1994
Lactuca saligna L. possesses resistance to Bremia lactucae Regel (lettuce downy mildew) of potential value to lettuce breeders. All the tested accessions of this species were highly or completely resistant to all of the races of B. lactucae used. The nature of this resistance was investigated quantitatively in a microscopical study of the earliest ...
Lebeda, A., Reinink, K.
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Lactuca saligna L. possesses resistance to Bremia lactucae Regel (lettuce downy mildew) of potential value to lettuce breeders. All the tested accessions of this species were highly or completely resistant to all of the races of B. lactucae used. The nature of this resistance was investigated quantitatively in a microscopical study of the earliest ...
Lebeda, A., Reinink, K.
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