Zobrazeno 1 - 10
of 35
pro vyhledávání: '"H. J. B. Lowe"'
Autor:
H. J. B. Lowe
Publikováno v:
Zeitschrift für Angewandte Entomologie. 79:376-383
In large field plots of experimental varieties, fewer Myzus persicae developed on resistant than on susceptible sugar beet, although in the glasshouse the effect of resistance on aphid numbers was more varied. In two years out of four, natural virus
Autor:
H. J. B. Lowe
Publikováno v:
Zeitschrift für Angewandte Entomologie. 76:311-321
Inherited resistance to aphids has been assessed in vigorous, pot-grown sugar beet with two short, consecutive tests after the seedling stage. The plants were infested with apterous Myzus persicae and Aphis fabae simultaneously, but assessments of re
Autor:
H. J. B. Lowe
Publikováno v:
Bulletin of entomological research. 60(4)
In both experimental and naturally developed colonies,Aphis fabaeScop., andAcyrthosiphon pisum(Harris) were concentrated on the upper parts of broad bean plants.A. pisumresembled Myzus persicae (Sulz.) rather thanAphis fabaeby normally infesting leav
Autor:
H. J. B. Lowe
Publikováno v:
The Annals of applied biology. 78(1)
SUMMARY Differences in inherited resistance among seven sugar-beet stocks had similar effects on Myzus persicae clones representing the range of variation in aphid response to resistant and susceptible sugar beet observed in fifty-eight clones collec
Autor:
H. J. B. Lowe, W. J. Angus
Publikováno v:
Annals of Applied Biology. 106:591-594
SUMMARY Aphid infestations of wheat yield trials near Cambridge were assessed by shoot sampling and by breeder's scores. Both resistant and extremely susceptible cultivars were identified. Results from the two methods of assessing infestation were we
Autor:
H. J. B. Lowe, Mohan Singh
Publikováno v:
Annals of Applied Biology. 107:109-116
SUMMARY A technique is described to assess and select in the field for resistance to Myzus persicae in sugar beet. Lines developed by this method were aphid resistant when compared with commercial cultivars. The resistance was inherited by progeny li
Autor:
H. J. B. Lowe
Publikováno v:
Annals of Applied Biology. 105:529-538
SUMMARY Five stocks of winter wheat were resistant to S. avenae in glasshouse screening tests, where resistance was more evident in older than younger plants but different types of resistance were not separated. Antibiosis was measured from the growt
Autor:
H. J. B. Lowe
Publikováno v:
Annals of Applied Biology. 88:401-406
SUMMARY Resistance to Sitobion avenae and Metopolophium dirhodum was assessed by caging aphids on the upper part of mature tillers. Despite variation in the results, considered to be due mainly to differences amongst plants of different ages, certain
Autor:
H. J. B. Lowe, Gillian Russell
Publikováno v:
Entomologia Experimentalis et Applicata. 17:468-476
The probing of Aphis fabae and Myzus persicae in the leaves of sugar beet with inherited resistance or susceptibility to aphids was studied by microscopic examination of samples of whole leaves, prepared after 48 h exposure to adult aphids at approxi
Autor:
H. J. B. Lowe
Publikováno v:
Ecological Entomology. 9:119-122