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United States Department of Agriculture

Agricultural Research Service

Title: Occurrence of Unreduced Eggs in Peach

Authors
item Pooler, Margaret
item Scorza, Ralph

Submitted to: Fruit Varieties Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: March 1, 1995
Publication Date: N/A

Interpretive Summary: Peach tree growth and fruit development is controlled by gene expression. Little is known concerning which genes control specific traits and where these genes are located on peach chromosomes. Such information may make it easier in the future to improve certain characteristics of peaches such as disease resistance and fruit quality. This report shows that during the development of the peach seed and pollen, the chromosome number is not always reduced, as normally occurs. This observation will allow scientists to use certain peach trees for detailed genetic and genome mapping studies.

Technical Abstract: Haploid peach trees were evaluated for the presence of unreduced eggs as indicated by the production of normal fruit with viable seed following open pollination. Two of 7 haploid genotypes produced unreduced eggs. "PAlal-IN" produced normal fruit from 0.44% of the flowers studied in "PRRL-IN" produced 0.35% normal fruit. Unreduced pollen was also observed in haploid plants and occurred in all anthers sampled.

Last Modified: 9/22/2014
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