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Great achievements have been reached in ornamental lily breeding, however, there is little work on edible lily breeding. In order to breed edible lilies as good as ornamental ones, in the present study, two edible lilies, Lilium brownii var. viridulum and L. davidii var. unicolor, were mainly investigated for their microsporogenesis, hybridization, genomic differences, and hybrid identity and fertility using conventional and modern cytogenetic techniques. The results showed that both L. brownii var. viridulum and L. davidii var. unicolor had normal meiosis and fertility; their hybrids could be obtained through cut style pollination and embryo rescue only when L. brownii var. viridulum was used as female and L. davidii var. unicolor as male; the hybrids were male sterile and the two genomes of their hybrids could be distinguished with genomic in situ hybridization. The results are similar to what observed in ornamental LA, OA, OT, and LO lily hybrids. It is concluded that L. brownii var. viridulum and L. davidii var. unicolor are distantly related and the hybrids are promise to breed allotriploid edible lilies in the next few years. |
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