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STUDIES ON OSCINELLA PRIT LINN.: SUPPLEMENTARY DATA ON THE RELATION BETWEEN VARIETAL DIFFERENCES OF OAT PLANTS AND SUSCEPTIBILITY TO INFESTATION
Author(s) -
CUNLIFFE NORMAN,
FRYER J. C. F.
Publication year - 1925
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1925.tb04241.x
Subject(s) - infestation , biology , growing season , crop , agronomy , sowing , resistance (ecology) , abundance (ecology) , horticulture , ecology
SUMMARY During the year 1924 additional data, in relation to varietal resistance to attack, were collected by repeating as nearly as possible the investigation conducted during the previous year, with the exception that only those varieties of oat were used, which were most ( Goldfinder and New Abundance ) and least resistant ( Superb and Supreme ). During the second season, during which, on the whole, conditions were unfavourable to damage by frit fly, varietal differences were again effective so far as stem infestation was concerned. The two varieties, Goldfinder and New Abundance , were significantly resistant as compared with the variety Supreme , similar differences being observed in the two seasons. Very late sowing indicated that varietal differences among very young plants were ineffective in influencing extent of infestation. Small significant differences were observed in relation to the grain infestation, but from the evidence available it would appear that constant values for these differences are unlikely to occur over a period of years, because extent of infestation is largely dependent on the history of the crop during the early growing period.