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Abstract Detail

Reproductive Processes

Stumbo, Joseph [1], Krakos, Kyra [2].

Reproduction biology of Oenothera spp. in Texas: Are you a hybrid or something brand new?

In 2015, the Krakos Lab was sent to West Texas to collect ecological field data on two species of Oenothera, and to determine if a hybrid species existed in the region. Potential hybrid populations were identified and collected from the field, with early genetic results indicating that this is a potentially true-breeding new intermediate species. We hypothesized that the new Oenothera species collected from the field will breed true and will be morphological and genetically similar to the parent intermediate Oenothera collected in the field. A series of hand pollination treatments were conducted on the new Oenothera species to determine breeding system. The hybrids exhibit intermediate traits from both possible historical parent species in that the flowers have glabrous hairs, like Oenothera nealleyi and the fruit is non-stiped like Oenothera suffulta. The new Oenothera species is self-incompatible, however, it can produce viable fruit from members of the same populations and hybrids from different populations. The new intermediate populations of Oenothera appear to be a single stabilized species.

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1 - 10541 Anton Place, St.louis, MO, 63128, United States
2 - Maryville University, Biology, 650 Maryville University, St Louis, MO, 63141, United States

none specified

Presentation Type: Oral Paper
Session: REP1, Reproductive Processes 1
Location: San Luis 2/Starr Pass
Date: Wednesday, July 31st, 2019
Time: 8:45 AM
Number: REP1004
Abstract ID:470
Candidate for Awards:None

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