Reproductive isolation on interspecific backcross of F1 pollen to parental species, Hemerocallis fulva and H. citrina (Hemerocallidaceae)

Akiko A. Yasumoto, Tetsukazu Yahara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Reproductive failure of backcross could play important roles in determining the evolutionary outcome of hybridization. However, such studies have been somewhat fewer than those of the F1-producing cross and F1 × F1 cross. We conducted hand-pollination backcross experiments using Hemerocallis fulva, H. citrina, and their F1 hybrids. Seed set per flower of the backcrosses reduced to about 50% of the control cross, irrespective of ovule parent species. This symmetrical seed set reduction on the backcross might be caused by the death of backcross embryo as a result of Dobzhansky-Muller incompatibility by recessive alleles.

Original languageEnglish
Pages (from-to)287-291
Number of pages5
JournalJournal of Plant Research
Volume121
Issue number3
DOIs
Publication statusPublished - May 1 2008

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Hemerocallis fulva
Xanthorrhoeaceae
reproductive isolation
pollen
seed set
ovules
pollination
hybridization
death
alleles
flowers

All Science Journal Classification (ASJC) codes

  • Plant Science

Cite this

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AB - Reproductive failure of backcross could play important roles in determining the evolutionary outcome of hybridization. However, such studies have been somewhat fewer than those of the F1-producing cross and F1 × F1 cross. We conducted hand-pollination backcross experiments using Hemerocallis fulva, H. citrina, and their F1 hybrids. Seed set per flower of the backcrosses reduced to about 50% of the control cross, irrespective of ovule parent species. This symmetrical seed set reduction on the backcross might be caused by the death of backcross embryo as a result of Dobzhansky-Muller incompatibility by recessive alleles.

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