Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1975-1979  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Studies onGomphocarpus physocarpus: Further evidence of preferential feeding by the aphid,Aphis nerii on the internal phloem (1975)
    Springer
    Protoplasma 84 (1975), S. 345-356 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Penetration of the stems and leaves ofGomphocarpus physocarpus (E.Mey) by the aphid,Aphis nerii (B. de F.) was studied with light and phase microscopes. Penetration of the epidermis and ground tissues was largely intercellular, that of the phloem tissues partly intercellular and in part intracellular. In the large majority of penetrations the external phloem was bypassed, the stylet tracks terminating in the sieve tubes of the internal phloem. Of 75 pairs of stylet tips encountered in presumably functional sieve tubes 73 were lodged in sieve tubes of the internal phloem. This confirms observations of a preliminary study which indicated thatA. nerii feeds preferentially on sieve tubes of the internal phloem. A satisfactory explanation of this preferential feeding has yet to be provided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01279362
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Observations of the penetration of the phloem in leaves ofNerium oleander (Linn.) by stylets of the aphid,Aphis nerii (B. de F.) (1975)
    Springer
    Protoplasma 86 (1975), S. 309-319 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Penetration of the phloem of young and mature leaves ofNerium oleander by stylets of the aphid,Aphis nerii was studied with light, phase and differential interference contrast microscopes. Two of five pairs of stylet tips encountered in young leaves and eleven of sixteen pairs encountered in mature leaves were lodged in sieve tubes of the adaxial phloem. In young leaves, the majority of penetrations originated from the abaxial epidermis; conversely, the majority of penetrations in mature leaves originated from the adaxial epidermis. In all instances, penetration of the epidermis, ground tissue and phloem was largely intercellular.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287481
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    An investigation of preferential feeding habit in fourAsclepiadaceae by the Aphid,Aphis nerii B. de F. (1977)
    Springer
    Protoplasma 92 (1977), S. 1-19 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Penetration of the stems ofAraujia sericofera, Asclepias curassavica, Cynanchum ellipticum andSarcostemma viminale by stylets of the aphidAphis nerii was studied with light and differential interference contrast microscopes. Of a total of 118 stylets and 446 stylet tracks observed in cross-sections of stems of the fourAsclepiadaceae, 97 stylets and 372 stylet tracks terminated within the internal primary phloem. Of the remainder, 15 stylets and 74 tracks terminated within the external primary phloem. 22 stylets and 179 of the stylet tracks penetrated the external phloem on the way to the internal phloem. Of these, only four stylets and 32 of the stylet tracks showed signs of attempted probes of the external phloem. It is suggested thatAphis nerii may obtain not only its essential food requirements but also cardiac glycosides as a basis for chemical aposematism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01280197
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Observations of preferential feeding by the aphid,Rhopalosiphum maidis on abaxial phloem ofCucurbita maxima (1978)
    Springer
    Protoplasma 96 (1978), S. 75-80 
    Details
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Seventy-four of 83 stylet tracks, and 20 of 22 pairs of stylets of the aphid,Rhopalosiphum maidis were observed terminating in abaxial phloem of matureCucurbita maxima leaves. These results indicate that the abaxial phloem is more important in vein loading and the export of assimilates from mature leaves than the adaxial phloem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01279576
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...