ISSN:
1439-0523
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Nine European varieties of winter beans (Vicia faba L- var. minor and equina), pre-germinated at 20°C and raised at 15°C until plant emergence, were hardened at 8/2°C (day/night) for severals week;, and then “dehardened” at 15°C or 10°C.Development and varietal expression of freezing resistance (FR). und of several characters generally supposed to be linked with winterhardness, were examined during hardening and dehardening. Alter 5 weeks of hardening, most leaf traits remained constant while growth of plants and development of new leaves continued slowly. At the onset of dehardening FR and DM-content of tissue decreased, whereas most traits increased, rapidely or were enhanced considerably resulting in positive or negative phenotypical correlations of the traits with FR.With respect to winterhardiness, the old French landrace ‘Cote d'Or’ had the most advantages for almost each trait compared to the other varieties tested, Genotypic correlations established among leaf and plant traits, and with FR, might allow a limitation of the number of selection criteria for winterhardness. Even the laborious determinations of FR. might be omitted or minimized, since its genotypic variation was determined to 64 % by the variation in the rate of development, the change in height and water/D:M- ratio, and the leaf area. The validity of a winterhardness ideotype and the restrictions which havt1 to be considered with respect to the measurement of the proposed selection criteria are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1439-0523.1988.tb00299.x
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