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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (7): 1495-1504.doi: 10.16420/j.issn.0513-353x.2022-0385

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Analysis of Flora Volatiles of the Hybrids and Their Parents in Daylily (Hemerocallis

JIAO Fang1,2, SUN Guofeng1, LI Lifang2, ZHANG Jinzheng1,*()   

  1. 1 Key Laboratory of Plant Resources and Beijing Botanical Garden,Institute of Botany,the Chinese Academy of Sciences,Beijing 100093,China
    2 Beijing Florascape Co.,Ltd.,Beijing 100035,China
  • Received:2022-12-06 Revised:2023-03-13 Online:2023-07-25 Published:2023-07-26
  • Contact: ZHANG Jinzheng

Abstract:

Eighteen F1 hybrids from three cross combinations of Hemerocallis and their parents were used as materials,and the floral volatiles were qualitatively and quantitatively determined by headspace solid-phase extraction combined with gas chromatography-mass spectrometry(HS-SPME-GC-MS). Relative release rate of the two main flora volatiles which decide the fragrance and the total floral volatiles of the tested materials were analyzed. One-way SIMPER analysis was performed to figure out the percentage of similarity with parents. Result showed that:(1)The composition and content of the floral volatiles of the F1hybrids of the three hybrid combinations were similar to their parents,when the female parent is the same,the higher the relative release rate of the floral volatiles of the male parent,the higher the relative release rate of the floral volatiles of its F1 hybrids;(2)If the main floral volatile of the hybrid parents were (E)-β-ocimene,the F1 hybrids also contained higher amount of (E)-β-ocimene and the content of which was between the two parents,and the total amount of flora volatiles was also between the two parents;if the main flora volatiles of the parents contained both (E)-β-ocimene and linalool,the content of (E)-β-ocimene in some of the F1 hybrids were higher than or similar to that of the parents,while the content of linalool was between the two parents,the total amount of floral volatiles was basically higher than that of the two parents;(3)Wild species with intense fragrance crossed with cultivars with no significant fragrance could breed fragrant F1 hybrids,so they are good germplasm resources to breed fragrant daylilies.

Key words: Hemerocallis, hybridization, flora volatily, HS-SPME-GC-MS