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  • Springer  (11)
  • Blackwell Publishing Ltd
  • Wiley
  • 1980-1984  (10)
  • 1940-1944  (1)
  • 1925-1929
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  • Springer  (11)
  • Blackwell Publishing Ltd
  • Wiley
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 40 (1984), S. 1441-1443 
    ISSN: 1420-9071
    Keywords: Conidia ; Neurospora crassa ; temperature ; respiration ; germination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Incubation of conidia of wild typeNeurospora crassa at temperatures ranging from 25 to 46°C modulates their respiratory type. Between 37 and 41°C, the transient activity of the cyanide-insensitive respiratory pathway parallels, with a maximal extrusion of protons into the medium, the optimal rate of germ tube outgrowth.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Potato research 26 (1983), S. 237-246 
    ISSN: 1871-4528
    Keywords: Solanum tuberosum ; berry production ; tuber production ; survival ; germination ; rotation ; volunteer plants ; groundkeepers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Der Anteil der schottischen Kartoffelfläche, der mit Sorten wie Maris Piper und Désirée bestellt ist, die grosse Zahlen an Beeren produzieren können, stieg seit 1970 deutlich an (Tab. 1). Solche Sorten können dem Boden grosse Mengen an Kartoffelsamen (TPS) zuführen (Tab. 2) und ernste Unkrautprobleme schaffen. TPS kann im Boden eine siebenjährige Kartoffelzuchtfolge überleben (Tab. 3), während die Knollen der Sämlinge zum traditionellen Problem der Durchwuchskartoffeln beitragen (Abb. 1). Die Einflüsse von TPS als Unkraut in Kartoffelfruchtfolgen werden in Bezug auf Daten über Samenproduktion und Überleben und über Knollenbildung durch Sämlinge im Feld unter schottischen Bedingungen diskutiert. Verbesserungen der Erntetechniken können die Populationen der Durchwuchskartoffeln verringern, aber Sämlinge können in jedem Teil der Fruchtfolge erscheinen und die Population der Durchwuchskartoffeln auffüllen solange lebensfähige Samen im Boden vorhanden sind. Die Sämlinge können Probleme schaffen als ‘unerwünschte Pflanzen’ in Pflanzkartoffelbeständen oder in Feldern, auf denen ausgewählte TPS-Linien wachsen.
    Abstract: Résumé En Ecosse, les surfaces de pommes de terre plantées avec des variétés produisant un nombre de baies important, telles que Maris-Piper et Désirée, ont nettement augmenté au cours des années 70 (tableau 1). Ces variétés peuvent apporter des quantités importantes de semences vraies dans le sol (tableau 2) et créer de sérieux problèmes d'adventices. Les semences de pommes de terre peuvent survivre dans le sol avec cette culture tous les 7 ans dans la rotation (tableau 3) alors que les tubercules issus de semences ajoutent un problème en plus à celui traditionnel des repousses (fig. 1). En Ecosse, les conséquences des semences de pommes de terre, en temps que mauvaises herbes dans une rotation de plants, sont analysées à partir de chiffres indiquant la production et la survie de semences et la production de tubercules dans le champ issus de semences. Les améliorations apportées à l'arrachage peuvent réduire les populations traditionnelles de repousses mais des plantules issues de semences peuvent apparaître dans toute culture de la rotation et rétablir ainsi une population de repousses aussi longtemps que des semences viables demeurent dans le sol. Les plantes issues de semences peuvent elles-mêmes présenter un problème au niveau de l'épuration dans les cultures de plants ou dans les champs de sélection de lignées de semences vraies.
    Notes: Summary The proportion of the Scottish potato area planted to cultivars such as Maris Piper and Désirée, which can produce large numbers of berries, increased markedly during the 1970s. Such cultivars may add large quantities of true potato seed (TPS) to the soil and create serious weed problems. TPS can survive in the soil through a 7-year potato rotation, whilst tubers from seedlings add to the traditional groundkeeper problem. The implications of TPS as weeds of seed potato rotations are discussed in relation to data presented on seed production and survival and on tuber production by seedlings in the field under Scottish conditions. Seedlings may also present problems as ‘rogues’ in fields where TPS selected lines are grown.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 50 (1944), S. 73-106 
    ISSN: 1573-8469
    Keywords: Dwerg ; Gemiddelde ; Gewas ; „Gezond” ; Graad van aantasting ; Herkomst ; Herstel ; Kieming ; Kiemplant ; Klein ; Overgevoelig ; Physio ; Ras ; Rijping ; Stuifbrand ; Vatbaar ; Volwassen plant ; „Ziek” ; dwarf ; mean ; crop ; in relation to seedlings: normal ; degree of attack ; origin ; recovering ; germination ; seedling ; small ; hypersensitive ; physiologic race ; variety ; maturation ; smut ; susceptible ; mature plant ; in relation to seedlings: abnormal
    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
    Plant foods for human nutrition 34 (1984), S. 151-157 
    ISSN: 1573-9104
    Keywords: Horse gram ; moth bean ; germination ; cooking ; phyate phosphorus ; minerals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The phytate phosphorus in horse gram and moth bean seeds accounted for 57% and 55%, respectively, of the total phosphorus. During germination, there was a continuous decrease in the proportion of phytate phosphorus. In 48 h germinated seeds, the phytate phosphorus accounted for only 20% and 26%, respectively of the total phosphorus. A significant amount of calcium was leached out during germination. Other minerals were not affected significantly. Cooking decreased phytate phosphorus in ungerminated and germinated seeds of both the legumes. Calcium content in ungerminated and 12 h germinated moth bean seeds decreased significantly during cooking. Such a decrease was noticed in ungerminated seeds of horse gram. No significant changes were noticed in magnesium, iron, manganese, and zinc contents of both the legumes due to cooking.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 141 (1982), S. 53-79 
    ISSN: 1615-6110
    Keywords: Basidiomycetes ; Aphyllophorales ; Ganodermataceae ; Ganoderma lucidum ; G. atkinsonii ; G. philippii ; Proterospores ; spores ; germination ; dispersal by air ; dispersal by animals ; biogenetic law ; morphology ; phylogeny ; systematics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Proterospores are formed exclusively at the beginning of the sporulation period and independently of abiotic factors. They differ both morphologically and physiologically from other spores developed later by the same fruit-body. As seen inGanoderma, proterospores germinate readily, whereas other spores must first pass through a fly larva gut. These proterospores are therefore well adapted to dispersal by air, the other spores, however, to dispersal by animals. In this respect, ontogenesis appears to recapitulate phylogeny. A comparative study of proterospores should further clarify systematic relationships within the fungi.
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  • 6
    ISSN: 1573-5060
    Keywords: Zea mays ; maize ; germination ; low temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two collections of inbred lines were divided into early (E), medium (M) and late (L) germinating lines, on the basis of days to germination under growth-cabinet conditions at 8°C and 6°C constant temperatures. Tolerance of low temperatures was found to be an heritable trait and characteristic of each inbred line. When the inbreds and F1s were tested at 6°C the single crosses of early germinating lines showed earlier germination than crosses between slow germinating lines. Thus the performance of F1s greatly depends on the parental lines used in the crosses. Differences observed in some of the reciprocal crosses were attributed to maternal effects.
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  • 7
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; pre-harvest sprouting ; germination ; α-amylase enzyme ; gibberellic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Sensitivity to GA in non-Gai genome winter wheat (Triticum aestivum L.) cultivars was investigated to determine magnitude of variation of the trait, its association with other traits, and effects of geographical location of production. α-Amylase enzyme activity was measured before and after treatment with gibberellic acid in 18 cultivars grown at one location and in five cultivars grown at six locations. Dye-labeled starch and agar-starch media procedures were used for the first and second experiments, respectively. α-Amylase activity differed significantly among the 18 cultivars after germination in water, germination in GA, and in absolute and relative sensitivity to GA. Cultivars that reacted similarly to GA had some common ancestors in their pedigrees, and α-amylase activity and sensitivity to GA were significantly negatively associated with seed weight. α-Amylase activity differed between tall and semi-dwarf cultivars in the second experiment, but not in the first experiment. The magnitude of variation in α-amylase activity and its relationship to preharvest sprouting susceptibility of the cultivars suggested that the trait can be modified to improve seed dormancy. Significant interactions between cultivar responses to GA and geographical location of grain production suggested that selection should be carried out in several environments.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 9 (1983), S. 1073-1078 
    ISSN: 1573-1561
    Keywords: Allelopathy ; inhibitors ; western ragweed ; Ambrosia psilostachya DC ; germination ; shoot growth reduction ; root growth reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Western ragweed (Ambrosia psilostachya DC.) top growth and rhizome extracts were inhibitory to germination and growth of seedling shoots and roots of test plants in almost all cases. Germination of all plants tested was reduced an average of 19.5% by the ragweed extracts. Shoot and root growth of plants tested was reduced an average of 56.8% by the ragweed extracts. The combined effects of germination plus growth reductions resulted in the tested plants producing only 34.8% in the extracts compared to production in distilled water.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 29 (1980), S. 727-736 
    ISSN: 1573-5060
    Keywords: Wheat ; Triticum aestivum ; bread wheat ; Triticum durum ; durum wheat ; drought tolerance ; germination ; seedling growth ; water stress selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A series of experiments was performed in order to evaluate the significance of seed germination and seedling growth in osmotic media as screening methods for drought tolerance. Ten spring wheat (Triticum aestivum L. em Thell.) and one durum wheat (Triticum durum Desf.) were tested under controlled environments, using polyethylene glycol-6000 (PEG) solutions as the moisture stress inducing media. Tolerance in the rate of endosperm utilization, under stress, prior to the onset of germination varied among cultivars. Germination rate or injury to germination at various concentrations of PEG differed significantly among cultivars. Cultivar rating with respect to injury to germination changed with stress levels. Injury to germination did not correlate with endosperm utilization rate in PEG or in water. Germinating seedlings were tolerant to extreme desiccation up to the stage of emergence of the first leaf from the coleoptile. Growth of photosynthesizing seedlings was monitored as they were carried through an increasing concentration gradient of PEG solutions, ranging from −5.9 to −11.3 bars of water potential. Cultivars significantly differed in seedling growth tolerance to increasing levels of water stress. Seedling growth tolerance across cultivars was not correlated with their germination responses under srress. It is concluded that tolerance to water stress in growing seedlings can be screened for by using PEG-containing nutrient solutions. It can not be predicted from germination tests in osmotica. Work was done under a US-Israel Binational Science Foundation (BSF) Grant no. 1654/78.
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  • 10
    ISSN: 1573-5060
    Keywords: Triticum destivum ; wheat ; pre-harvest sprouting ; inhibitors ; embryo ; germination ; gibberellic acid ; breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Seed dormancy in wheat (Triticum aestivum L. em Thell) is important for minimizing pre-harvest sprouting. To facilitate breeding cultivars that tolerate pre-harvest sprouting conditions, we assessed mode and magnitude of variation of seed dormancy among genotypes and investigated involvement of endogenous water-soluble inhibitor(s) in seed germination. Embryo bio-assays established that water-soluble inhibitor was ubiquitous among the wheat cultivars studied and did not diminish in quantity during after-ripening. Germination response of embryos was decreased by endogenous inhibitor, but the effect markedly declined as embryos aged at room temperature. Variation in dormancy among cultivars was primarily caused by differential response of their embryos to endogenous inhibitor. Gibberellic acid counteracted the initial inhibitory effect of endogenous inhibitor on germination but not the subsequent inhibitory effect on seedling growth. We concluded that pre-harvest sprouting resistance involves multiple factors, particularly embryo receptivity to endogenous inhibitor, and that variation in inhibitor quantity is not solely responsible for genotypic differences in susceptibility to pre-harvest sprouting. The possibility of additional approaches to breeding for pre-harvest sprouting resistance is indicated.
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