On the nature of intra- and interspecific incompatibility in Ulmus

Efforts to introduce Dutch Elm Disease resistance into the American elm (Ulmus americana L.) through breeding with Asian elms has been hampered by sexual incompatibility. Controlled pollinations of Ulmus americana and the Siberian elm (Ulmus pumila L.) were studied in detail to gain insight into the...

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Bibliographic Details
Published in:American journal of botany 1986-04, Vol.73 (4), p.465-474
Main Authors: Bob, C.F, Redmond, B.L, Karnosky, D.F
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
AMELIORATION DES PLANTES
Biological and medical sciences
CERATOCYSTIS
CERATOCYSTIS ULMI
DISEASE RESISTANCE
FITOMEJORAMIENTO
Flower stigma
Fluorescence
Fundamental and applied biological sciences. Psychology
Generalities
Genetics and breeding of economic plants
GERMINACION
GERMINATION
HIBRIDACION
HYBRIDATION
HYBRIDIZING
INCOMPATIBILIDAD DEL POLEN
INCOMPATIBILITE POLLINIQUE
Interspecific and intergeneric hybridization, introgressions
Mentors
Papillae
Pest resistance
PLANT BREEDING
Plant breeding: fundamental aspects and methodology
Plant growth
POLEN
POLLEN
POLLEN INCOMPATIBILITY
Pollen tubes
Pollination
POLYMERS
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
Trees
ULMUS
ULMUS AMERICANA
ULMUS PUMILA
Varietal selection. Specialized plant breeding, plant breeding aims
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Summary:Efforts to introduce Dutch Elm Disease resistance into the American elm (Ulmus americana L.) through breeding with Asian elms has been hampered by sexual incompatibility. Controlled pollinations of Ulmus americana and the Siberian elm (Ulmus pumila L.) were studied in detail to gain insight into the nature of this incompatibility. Microscopic observations revealed that germination and early pollen tube growth were inhibited on the stigmatic surface following both intra- and interspecific incompatible pollinations. Both qualitative and quantitative differences in pollen inhibition on the stigmatic surface indicated that the inhibition may involve the action of an inhibitory substance. Detailed observations on callose deposition indicated that this β-1,3 glucose polymer may implement the inhibition.
ISSN:0002-9122
1537-2197
DOI:10.1002/j.1537-2197.1986.tb12064.x