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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 263-265 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE enzyme nitrate reductase is of major importance A in the nitrogen metabolism of maize1-*. Evidence from earlier work in our laboratory1-2 suggested that it may be significantly involved in grain-yielding capacity, and also established1 that the activity of nitrate reductase is drastically ...
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 10 (1961), S. 368-378 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Selection for higher and lower levels of protein and oil content in maize has been conducted for 61 generations. Response to selection has been irregular, and prediction of response by extrapolation of regression trend lines proved seriously inaccurate in at least 9 of 12 predictions. Application of a “selection response’ formula also yielded generally unsatisfactory predictions. Analysis of the morphological components of oil content led to very accurate prediction of response in the “High Oil” strain and to a reasonably satisfactory prediction in “Low Oil”. It was apparent that in the last 55 generations of selection, selection response for oil content was concentrated in two separate morphological characters — germ size in the “high” selection and oil content of the germ in selection for lower oil content. A satisfactory analysis of the character “protein content” could not be made from data available.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 11 (1962), S. 263-272 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Maize types and varieties cultivated in southeastern Europe may be traced to a number of introductions of widely-differing New World maize races. Subsequent hybridization, introgression, and selection have resulted in the evolution of many unique ecotypes. This paper describes the apparent history and current distribution of the major maize races and “race groups” of southeastern Europe. The classification is preliminary in nature, since not all material present in the area has been adequately collected or examined. The known and potential special breeding value of the major maize races domestic to the area are discussed, and emphasis is placed on the importance of quick action in the collection and preservation of this valuable and irreplaceable germplasm source. Brief mention is also made of planned international cooperation in the further collection and conservation of southeastern European maize germ plasm.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 14 (1965), S. 161-169 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A race classification, based on multiple variate analysis using 23 morphological characteristics, was applied to 42 indigenous maize strains from Southeastern Europe, 20 “race” collections from Spain and 2 Corn Belt Dent hybrids from the United States. Based on the evidence obtained and on comparisons with other studies, the Southeastern European strains were assigned to one of seven races or race groups, of which at least five appear on historical evidence to be derived directly or by recent hybridization from importations originating in North America. In contrast, the majority of the Spanish collections appeared to have their origins in importations from Central America or the West Indies. Very little similarity was observed between the Spanish and Southeastern European collections, when considered overall. Detailed classification and study of European maize appears highly desirable as an aid to utilization of this potentially valuable germ plasm in world maize breeding programs.
    Type of Medium: Electronic Resource
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