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All Library Books, journals and Electronic Records Telegrafenberg

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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 49-56 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 57-59 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 62-63 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 60-61 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The English abstracting journal „Plant Breeding Abstracts” gives a satisfactory synopsis of books on plant breeding and of articles in this field that have appeared in general and professional journals. In the above survey are mentioned the following periodicals: Sveriges Utsädesföreningstidskrift (1891 →), Zeitschrift für Pflanzenzüchtung (1913 →), Der Züchter (1929 →), Agri Hortique Genetica (1943 →), Indian Journal of Genetics and Plant Breeding (1941 →), Melhoramento (1948 →), Annales de l'Amélioration (1951 →) and Euphytica, Netherlands Journal of Plant Breeding (1952 →).
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 43-48 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting Enige waarnemingen over de invloed van de daglengte op de bladgroei van kroten. 1. Het loofgewicht per plant is het product van het aantal bladeren per plant × bet gemiddelde bladgewicht per plant. Het gemiddelde bladgewicht wordt beïnvloed door de daglengte: in een lange dag worden de bladeren groter dan in een kortere dag. Het aantal bladeren per plant wordt niet beïnvloed door de daglengte. 2. Gedurende een periode van afnemende daglengte neemt ook het loofgewicht per plant af. Dit vindt plaats, zodra de bladeren die onder de langere daglengte zijn gevormd, afvallen, en worden vervangen door nieuwe, die kleiner zijn, omdat zij in een kortere daglengte zijn gegroeid. Bij bieten, die voor half Juni zijn gezaaid, begint deze achteruitgang van het loofgewicht gewoonlijk in de eerste helft van Augustus. 3. Het afnemen van de daglengte in de tweede helft van het zomerseizoen is blijkbaar een beperkende factor voor de groeisnelheid van de bieten via de verkleining van het loofgewicht per plant. 4. Indien onder een kortere daglengte de groeiomstandigheden voor de productie van een groot aantal bladeren gunstiger zijn dan onder een langere daglengte, kan het grotere aantal bladeren opwegen tegen de kleinere afmetingen van ieder blad, en oorzaak zijn, dat het loofgewicht per plant onder de kortere daglengte toch even groot of zelfs groter is dan onder de langere. Dit komt echter slechts bij wijze van uitzondering voor.
    Notes: Summary 1. Some observations on the influence of the length of day on the leaf growth of red garden beets have been made. 2. The foliage weight per plant is the product of the number of leaves per plant × the average leaf weight per plant. The average leaf weight is influenced by the length of day: under long day conditions the leaves grow larger than in a shorter one. The number of leaves per plant is not influenced by the length of day. 3. During a period of a decreasing day length, the foliage weight per plant also decreases. This takes place as soon as the leaves, which have developed under the longer day length, drop, and are replaced by new ones, which are smaller having developed under a shorter day length. With beet plants that have been planted before the middle of June, this reduction of the foliage weight per plant usually starts in the first half of August. 4. Evidently this decrease in the length of day during the second part of the summer season is a limiting factor for the growth rate of the roots through the reduction of the foliage. 5. If under a shorter day length the conditions are more favourable for the production of a great number of leaves than under a longer day length, the greater number of leaves may counterbalance the smaller size of the leaves, and consequently cause an equal of even a greater foliage weight per plant under the shorter day length than under the longer one. But this occurs only exceptionally.
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  • 6
    Electronic Resource
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    Springer
    Euphytica 1 (1952), S. 69-74 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 75-76 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 64-68 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary According to an E.C.A. project a study was made of the breeding, production, harvesting and marketing of small fruits in the U.S.A.. The breeding of small fruits appeared to be very important. With the strawberries the breeding for resistance to red-core-disease (Phytophthora fragariae Hickman) has come into prominence. TheVerticillium resistance of some Californian varieties, and the breeding for virus tolerance with parents of the tolerantchiloensis type was also of importance to us. Highbush blueberries are a native American crop; selection and breeding have resulted in much better varieties, which are being cultivated more and more intensively. Crosses between highbush blueberry types and lowbush types give more possibilities with respect to a drier soil, shorter growing season, and better hardiness. Blackberries are an important crop in the U.S.A.. Breeding work is done by G. F.Waldo at Corvallis (Oregon) in collaboration with G. M.Darrow at Beltsville. Better freezing quality is the main purpose in the West, greater hardiness in the East; thornlessness is a quality much wished for. Many possibilities still lie in hybridizing blackberries with raspberries. Problems in raspberry breeding in the West are mainly „wet feet”, a serious wilting disease, the cause of which is unknown yet, and the crumbliness of the fruits. Aphid resistance has been sufficiently achieved in new varieties such as Milton and Washington. Everbearing varieties are the purpose of the breeding work at Geneva.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 79-79 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 1 (1952), S. 77-78 
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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