A new way to produce odd‐allotetraploid lily ( Lilium ) through 2 n gametes

Odd‐allotetraploid lily, such as ‘Honesty’ (LAAA), is a new type of allotetraploids. However, there has been no report on how to breed odd‐allotetraploid lily cultivars so far. According to their genomic composition, such as LAAA, we proposed LA × AAAA and LALA × AAAA would be two ways to breed them...

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Bibliographic Details
Published in:Plant breeding 2021-08, Vol.140 (4), p.711-718
Main Authors: Xiao, Kongzhong, Cui, Luomin, Wan, Lin, Zhong, Ju, Liu, Yanmei, Sun, Yanni, Zhou, Shujun
Format: Article
Language:English
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Summary:Odd‐allotetraploid lily, such as ‘Honesty’ (LAAA), is a new type of allotetraploids. However, there has been no report on how to breed odd‐allotetraploid lily cultivars so far. According to their genomic composition, such as LAAA, we proposed LA × AAAA and LALA × AAAA would be two ways to breed them since LA lily could produce a small amount of 2 n gametes and LALA could produce a large amount of normal 2 x gametes. In the present study, an interploid cross, LA × AAAA, was made and its five seedlings were analysed using genomic in situ hybridization. Four of them were odd‐allotetraploid, one was near odd‐allotetraploid. Their intergenomic variations caused by 2 n eggs increased the chance of selecting new cultivars. It was concluded that the interploid cross was a promising way to breed odd‐allotetraploid lilies with high genetic variations at chromosome levels.
ISSN:0179-9541
1439-0523
DOI:10.1111/pbr.12932