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Powdery mildew resistance in Aegilops tauschii coss. and synthetic hexaploid wheats (1994)

Lutz, Jürgen ; Hsam, Sai L. K. ; Limpert, E. ; [et al.]

Springer

Genetic resources and crop evolution 41 (1994), S. 151-158

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ISSN: 1573-5109

Keywords: Triticum aestivum ; Aegilops tauschii (syn. Ae. squarrosa) ; Erysiphe graminis f. sp. tritici resistance genes ; gene expression

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Summary A collection of 400 Ae. tauschii (syn. Ae. squarrosa) Coss. accessions were screened for powdery mildew resistance based on the response patterns of 13 wheat cultivars/lines possessing major resistance genes to nine differential mildew isolates. 106 accessions showed complete resistance to all isolates, and 174 accessions revealed isolate-specific resistance, among which were 40 accessions exhibiting an identical response pattern as wheat cultivar ‘Ulka/*8Cc’ which is known to possess resistance gene Pm2. Expression of both complete and isolate-specific resistance from Ae. tauschii was observed in some synthetic hexaploid wheats derived from four mildew susceptible T. durum Desf. parents, each crossed with five to 38 resistant diploid Ae. tauschii accessions. Synthetic amphiploids involving different combinations of T. durum and Ae. tauschii generally showed a decrease in resistance compared with that expressed by the Ae. tauschii parental lines.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00051631

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Evolution und Züchtung des Saatweizens (Triticum aestivum L.) (1991)

Zeller, Friedrich J. ; Friebe, Bernd

Weinheim : Wiley-Blackwell

Biologie in unserer Zeit 21 (1991), S. 248-254

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ISSN: 0045-205X

Keywords: Life and Medical Sciences

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology

Notes: Seitdem der abendländische Mensch erkannt hatte, daß sich Getreidekörner, besonders die des Weizens, zur Mehl- und Brotherstellung eignen, ist er auf Gedeih und Verderb mit dieser Pflanzenart verbunden. Ohne den Einfluß des Menschen wären die Kulturformen von Weizen, Reis, Gerste, Hafer und Mais nicht denkbar. War er es doch, der entscheidend dazu beigetragen hat, daß sich im Laufe von Jahrtausenden unsere wichtigsten Getreidearten von ehemals spindelbrüchigen Gräsern, deren Samen nach der Reife auf den Boden fielen, Schrittweise zu zähspindeligen, nichtährenbrüchigen Hochleistungs-Nutzpflanzen umwandelten.

Additional Material: 8 Ill.