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Unveiling the relationship between Lilium regale and L. leucanthum for breeding new lily cultivars
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  • Ziyu Zhu,
  • Yanni Sun,
  • Siyu Liu,
  • Mingzhu Peng,
  • Shujun Zhou
Ziyu Zhu
Jiangxi Agricultural University College of Forestry/School of Landscape and Art
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Yanni Sun
Jiangxi Agricultural University College of Forestry/School of Landscape and Art
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Siyu Liu
Jiangxi Agricultural University College of Forestry/School of Landscape and Art
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Mingzhu Peng
Jiangxi Agricultural University College of Forestry/School of Landscape and Art
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Shujun Zhou
Jiangxi Agricultural University College of Forestry/School of Landscape and Art

Corresponding Author:[email protected]

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Abstract

It is important to know the relationship between different species in plant breeding. Lilium regale is the key source to breeding modern Trumpet (T) and Oriental-Trumpet (OT) lilies; however, L. leucanthum has not been reported for breeding modern lily cultivars though it has some good horticultural traits, and it belongs to the same section as L. regale. In order to unveil the affiliation between L. regale and L. leucanthum, the present research compared their stomata and photosynthesis, made hybridization between them using normal pollination and cut style pollination, and analyzed them and their hybrids through fluorescein in situ hybridization (FISH) and random amplified polymorphic DNA (RAPD). The results showed that, except for their stomate size, other characteristics of stomate and photosynthesis were similar; they had indiscriminate FISH karyotypes and were highly crossable; and most PAPD fragment bands were quite similar except that a few bands were species-specific. We concluded: L. regale and L. leucanthum could considered a biological species though they are two morphologically taxonomic species, therefore, L. leucanthum could be used in breeding new Trumpet and Oriental-Trumpet lilies as L. regale.