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Hybridity Verification of Progenies Obtained from Ovule Culture by Using RAPD Markers in Reciprocal Crosses of Alstroemeria  

Lee, Ja-Hyun (Department of Horticulture, Chonnam National University)
Joung, Youn-Hwa (Department of Horticulture, Chonnam National University)
Han, Tae-Ho (Department of Horticulture, Chonnam National University)
Publication Information
FLOWER RESEARCH JOURNAL / v.19, no.4, 2011 , pp. 231-237 More about this Journal
Abstract
In this study, we performed ovule culture after reciprocal crosses of two Alstroemeria accessions and investigated genetic contribution of parents by using RAPD markers. The best method was half-ovule culture on MS medium supplemented with $60g{\cdot}L^{-1}$ sucrose and $2.2g{\cdot}L^{-1}$ gelrite at 14 days after pollination. Embryos began to germinate after 6 weeks of culture. The complete plantlets were formed after 4 months of culture. In eight progenies and two parental cultivars, 59 polymorphic bands were obtained out of 89 total bands by RAPD analysis using 7 primers. Eight $F_1$ progenies from the crosses between two accessions using reciprocal crosses showed 1:1 contribution of maternal and paternal parents. It is confirmed that $F_1$ progenies were obtained from parental accessions by using RAPD markers. We conclude this cross combination showed pre-fertilization barriers with incompatibility between stigma or style, and pollen because progeny number was different in each cross combination. Thereby, it warrants overcoming pre-fertilization barrier together with post-fertilization barrier in order to broaden the heterozygosity within progeny populations in Alstroemeria breeding program.
Keywords
Alstroemeriaceae; half-ovule culture; Peruvian lily; RAPD; hybridity verification;
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