Study on Interspecific Compatibility of Different Combinations Inner (Inter) Lily Hybrids

Cross breeding is a major method to breed a new variety of lily, different hybrid combinations will show different compatibility. Some varieties of Asiatic hybrids, Oriental hybrids, Longiflorum hybrids, Trumpet hybrids, LA hybrids, OT hybrid and several species of wild-type lily were selected as materials to hybridize using four pollination methods, which are cut-style, graft-style, conventional pollination and invert graft-style, rate of fructification and number of embryo were used to determine compatibility of different combinations inner(inter) lily hybrids. Results indicated that when combinations in the same hybrid line, LA hybrids showed poor compatibility, the rate of fructification were low or no, while Oriental hybrids showed compatibility was relevant to gene type and finally hybrid embryos for more than 60 days were obtained from 35 good combinations, Asiatic hybrids showed a certain compatibility and hybrid embryos for more than 60 days were obtained, particularly for female parent Navona best. When combinations occurred between different hybrid lines, hybrid embryos could be obtained from A×L, OT×O, OT×A and OT×L group, which showed a certain degree of compatibility, while we have obtained swollen fruit, but embryos for more than 60 days were not found among the crossing groups of A×LA and O×T their compatibility should be studied further. Alusta, Nymph, Shocking and Yelloween were fine breeding materials as female parent in OT hybrid. When wild-type lilies were male parent, combinations which had better performance were Bonsoir (LA) × L. pumilum, Freya (LA) × L. davidii, Shocking (OT) × L. davidii, Navona (A) × L. pumilu, Navona (A) × L. concolor, Yelloween (OT) × L. pumilum, Yelloween (OT) × L. concolor and Yelloween (OT) × L. regale, while L. pumilum, L. concolor, L. daurium and L. davidii performed well as male parent.