Ontology type: schema:ScholarlyArticle
1988-01
AUTHORSE. Ottaviano, D. Petroni, M. E. Pe′
ABSTRACTAn indirect approach was adopted to select viable mutants affecting the male gametophytic generation in maize. This approach consists of a selection of endosperm defective mutants followed by a test for gametophytic gene expression, based on the distortion from mendelian segregation and on the measurement of pollen size and pollen sterility. The material used consisted of 34 endosperm defective viable mutants introgressed in B37 genetic background. Complementation tests indicated that the mutation in the collection of mutants affected different genes controlling endosperm development. The study of the segregation in F2 revealed four classes of de (defective endosperm) mutants: (1) mutants in which the mutation does not affect either gametophytic development or function; (2) mutants in which the effect on the gametophyte affects pollen development processes; (3) mutants showing effects on both pollen development and function, and (4) mutants where only pollen tube growth rate is affected. Positive and negative interactions between pollen and style were detected by means of mixed pollination (pollen produced by de/de plants and pollen from an inbred line used as a standard and carrying genes for colored aleurone), on de/de and de/ + plants. Positive interactions were interpreted as methabolic complementation between defective pollen and normal styles. More... »
PAGES252-258
http://scigraph.springernature.com/pub.10.1007/bf00303961
DOIhttp://dx.doi.org/10.1007/bf00303961
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