SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Mattsson Jan) srt2:(1990-1994)"

Search: WFRF:(Mattsson Jan) > (1990-1994)

  • Result 1-10 of 21
Sort/group result
   
EnumerationReferenceCoverFind
1.
  •  
2.
  •  
3.
  •  
4.
  •  
5.
  • Arup, Ulf, et al. (author)
  • High performance thin layer chromatography (HPTLC), an improved technique for screening lichen substances.
  • 1993
  • In: The Lichenologist. - : Cambridge University Press (CUP). - 0024-2829 .- 1096-1135. ; 25, s. 61-71
  • Journal article (peer-reviewed)abstract
    • High performance thin layer chromatography (HPTLC) is a method that can be used for screening lichen substances. It is as simple to use as standard TLC, but has many advantages: It is more sensitive, it is possible to run more samples in a shorter period of time, and the amount of solvent used is much smaller. The material needed and the methods used are described in detail. Horizontal chromatogram development was used. Since two of the solvents used in system B have been substituted, and since the properties of the HPTLC plates are slightly different, our results are not entirely in accordance with the standardized TLC method. A revised table for the identification of 69 lichen substances (obtained from 62 taxa) is accordingly presented.
  •  
6.
  •  
7.
  •  
8.
  •  
9.
  •  
10.
  • Kärnefelt, Ingvar, et al. (author)
  • Evolution and phylogeny of cetrarioid lichens.
  • 1992
  • In: Plant Systematics and Evolution. - 1615-6110. ; 183:1-2, s. 113-160
  • Journal article (peer-reviewed)abstract
    • TheAcharian genusCetraria has not been scrutinised in the same way as the genusParmelia in terms of circumscription of segregate genera. A few generic names have been introduced, but mainly in checklists without any real indication of what these names stand for. After a detailed investigation of characters in the apothecia, conidiomata, anatomical structures, as well as morphology and secondary chemistry, it is clear that several, more or less distinctive, phylogenetic lines exist among taxa which earlier were accommodated inCetraria. Some of these distinctive phylogenetic lines are distinguished by ascus characters: (1) clavate asci with a small axial body, an apical ring structure in the tholus and ellipsoid ascospores; (2) uniseriate asci with a large axial body and globose ascospores; and (3) taxa with broadly clavate asci with a large axial body and ellipsoid ascospores. Sixty-three character states were studied and results from the character analyses were evaluated by cladistic analysis against 43 examined terminal taxa. Seven further taxa were included in one analysis. Results from the cladistic analyses give rather strong support for a new systematic treatment of at least certain groups in the cetrarioid lichens. A formal systematic arrangement is not made here but will be presented elsewhere. The characters investigated are illustrated in 78 half tone pictures and one line drawing. Five cladograms are presented.
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-10 of 21

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view