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  • 1
    Electronic Resource
    Electronic Resource
    Gene polymorphisms in glyphosate-resistant and -susceptible biotypes of Eleusine indica from Malaysia (2003)
    Oxford, UK : Blackwell Science Ltd
    Weed research 43 (2003), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Resistant (R) and susceptible (S) biotypes of Eleusine indica were collected from four areas, namely Chaah, Lenggeng, Bidor and Temerloh, in Malaysia. Restriction fragment length polymorphism (RFLP) and polymerase chain reaction (PCR)-RFLP analyses using SphI restriction enzyme were able to differentiate the R biotype from the S biotype by showing R-specific and S-specific polymorphisms in E. indica from three of the areas, with the exception of Temerloh where no polymorphisms were detected. The different DNA profiles for the R biotypes obtained indicate that SphI is not a useful diagnostic marker. The DNA polymorphisms detected in the 5-enolpyruvylshikimate 3-phosphate (EPSP) synthase gene suggest that there are different mutation events leading to development of resistance to glyphosate. Partial sequencing of the EPSP synthase gene confirmed different mutations occurring with substitution of proline with serine or threonine at amino acid 106 for the R biotype in Chaah, Bidor and Temerloh.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3180.2003.00322.x
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  • 2
    Electronic Resource
    Electronic Resource
    Mobility and Persistence of Metolachlor in Two Common Malaysian Agricultural Soils (2000)
    Springer
    Bulletin of environmental contamination and toxicology 65 (2000), S. 530-536 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s0012800156
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of Mikania micrantha H.B.K. on germination and growth of weed species (1993)
    Springer
    Plant and soil 157 (1993), S. 107-113 
    Details
    ISSN: 1573-5036
    Keywords: allelopathy ; aqueous extract ; debris ; Mikania micrantha H.B.K.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Laboratory, greenhouse and field studies were conducted to determine the allelopathic potential of Mikania micrantha H.B.K. on the germination and growth of three weeds, namely Asystasia intrusa Bl., Chrysopogon aciculatus (Retz.) Trin. and Paspalum conjugatum Berg. The plant height of the test species decreased with increasing amounts of debris when either leaf or root debris of Mikania was present on the soil surface or incorporated into the soil. In general, incorporated debris caused greater reduction in height and seedling fresh weight than debris placed on the soil surface. Paspalum was more sensitive to either root or leaf of Mikania when incorporated into soil than on the soil surface. Leachate of Mikania leaf caused a significant reduction in radicle length and fresh weight of the seedlings of the test species. However, only Paspalum seeds showed significant decrease in germination when exposed to leaf leachate. Full-strength extract of either leaf or root caused a significant decrease in both germination and fresh weight of the test species. At the highest concentration, root extract of Mikania caused a marked reduction of radicle elongation of Paspalum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00038753
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects ofMikania micrantha H.B.K. on germination and growth of weed species (1993)
    Springer
    Plant and soil 157 (1993), S. 107-113 
    Details
    ISSN: 1573-5036
    Keywords: allelopathy ; aqueous extract ; debris ; Mikania micrantha H.B.K.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Laboratory, greenhouse and field studies were conducted to determine the allelopathic potential ofMikania micrantha H.B.K. on the germination and growth of three weeds, namelyAsystasia intrusa Bl.,Chrysopogon aciculatus (Retz.) Trin. andPaspalum conjugatum Berg. The plant height of the test species decreased with increasing amounts of debris when either leaf or root debris of Mikania was present on the soil surface or incorporated into the soil. In general, incorporated debris caused greater reduction in height and seedling fresh weight than debris placed on the soil surface. Paspalum was more sensitive to either root or leaf of Mikania when incorporated into soil than on the soil surface. Leachate of Mikania leaf caused a significant reduction in radicle length and fresh weight of the seedlings of the test species. However, only Paspalum seeds showed significant decrease in germination when exposed to leaf leachate. Full-strength extract of either leaf or root caused a significant decrease in both germination and fresh weight of the test species. At the highest concentration, root extract of Mikania caused a marked reduction of radicle elongation of Paspalum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02390232
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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