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  • 1
    Electronic Resource
    Electronic Resource
    In vitro germination and viability of buckwheat (Fagopyrum esculentum Moench) pollen (1998)
    Springer
    Euphytica 102 (1998), S. 87-92 
    Details
    ISSN: 1573-5060
    Keywords: Fagopyrum esculentum ; pollen germination medium ; pollen viability ; pollination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract An in vitro method for the germination of common buckwheat pollen was developed. Pollen grains were successfully germinated in an artificial medium consisting of 0.2 g each of MnSO4, Ca(NO3)2.4H2O and KNO3, 0.04 g H3BO3, 15 g sucrose and 30 g polyethylene glycol (molecular weight approximately 20,000) dissolved in 100 ml of double distilled water. The viability of pollen was assessed by in vivo and in vitro germination tests at 20 °C and 25 °C over a 38 h time period. Pollen grains were collected and germinated at 4 h intervals from freshly harvested flowers grown under 16 h day length and a constant temperature. Maximum pollen viability was found 2 h and 6 h after first light when plants were maintained at 25 °C and 20 °C, respectively. Viability, as measured by germination percentage, was similar at both temperature regimes. Some pollen remained viable for approximately 34 to 38 h in intact flowers, but all pollen lost viability in less than an hour when stored at room temperature without humidity control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018393425407
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of cultivar and environment on phenolic acids in buckwheat (1996)
    Springer
    Euphytica 90 (1996), S. 73-77 
    Details
    ISSN: 1573-5060
    Keywords: buckwheat ; Fagopyrum esculentum ; phenolic acids ; cultivar ; location ; seasonal effects ; color ; protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Phenolic acid contents were determined in seeds from five buckwheat cultivars grown at three locations in western Canada for four years. Buckwheat contained 12–16 g/kg of total phenolic acids, about 3 g/kg of esterified phenolic acids, and 8–13 g/kg of etherified phenolic acids. The latter represented 70 to 79% of the total phenolics. Variation in phenolic acids was mainly due to cultivar, seasonal effects and their interaction, while growing location had no significant effect. Phenolic acid contents of buckwheat were independent of seed color and protein content. Esterified phenolic acids exhibited a negative significant association with etherified phenolic acids in buckwheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025162
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Total phenolics and condensed tannins in field pea (Pisum sativum L.) and grass pea (Lathyrus sativus L.) (1998)
    Springer
    Euphytica 101 (1998), S. 97-102 
    Details
    ISSN: 1573-5060
    Keywords: condensed tannins ; field pea ; grass pea ; Pisum sativum L. ; Lathyrus sativus L. ; total phenolics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Seed samples of seventeen field pea cultivars grown at five locations, and nine grass pea lines grown at two locations, in western Canada during 1993 and 1994 were analysed for total phenolics and condensed tannins. Each location in each year was considered as one environment. Total phenolics in field pea differed significantly among cultivars, ranging from 162 mg/kg DM (dry matter) (CE, catechin equivalents) for AC Tamor to 325 mg/kg DM (CE) for Richmond. Field pea had barely detectable levels of condensed tannins. Total phenolics in grass pea ranged from 868 mg/kg DM (CE) for L880388 to 2059 mg/kg DM (CE) for LS89110. Condensed tannins in grass pea ranged from 0.89 g/kg DM (CE) for L880388 to 5.18 g/kg DM (CE) for LS89125. Cultivar had a larger relative contribution to total phenolic levels in field pea and to total phenolic and condensed tannin levels in grass pea than environment. Total phenolic and condensed tannin levels were not correlated with seed yield and seed protein content in field pea or grass pea. Levels of total phenolics and condensed tannins were positively correlated in grass pea. Grass pea seeds with darker seed coat colour contained higher levels of condensed tannins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018371604056
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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