Male gametophytic selection in maize View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1982-09

AUTHORS

E. Ottaviano, M. Sari Gorla, E. Pe

ABSTRACT

There is evidence that male gametophyte selection is a widespread phenomenon in higher plants. The pollen tube growth rate is one of the main components of gametophyte selective value; genetic variability for this trait, due to the effect of single genes or to quantitative variation, has been described in maize. However, indication of gametophytic selection has been indirectly obtained; its effect was revealed by the positive relation observed between gametophyte competitive ability and sporophyte metrical traits.This paper considers the results of selection applied to gametophyte populations produced from single plants. The competitive ability of the lines was evaluated in comparison with that of a standard line by means of the pollen mixture technique. Sporophytic traits were measured in the hybrid progeny obtained by crossing selected S3 and S4 families with an unrelated single cross and an inbred line. Gametophyte selection produced inbred lines with high gametophyte competitive ability. In view of the selection procedure adopted, this result was interpreted as an indication of haploid expression of genes involved in the control of pollen tube growth. Moreover, this gametophytic trait was positively correlated with sporophytic traits (seedling weight, kernel weight and root tip growth in vitro), indicating that both groups of characters have a common genetic basis. More... »

PAGES

249-254

References to SciGraph publications

Journal

TITLE

Theoretical and Applied Genetics

ISSUE

3

VOLUME

63

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00304004

DOI

http://dx.doi.org/10.1007/bf00304004

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1018838513

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24270824


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