A new way to produce odd‐allotetraploid lily (Lilium) through 2n gametes. (7th June 2021)

• Record Type: Journal Article
• Authors: Xiao, Kongzhong; Cui, Luomin; Wan, Lin; Zhong, Ju; Liu, Yanmei; Sun, Yanni; Zhou, Shujun
• Is Part Of: Plant breeding. Volume 140:Number 4(2021)
• Page Start: 711
• Page End: 718
• Publication Date: 2021-06-07
• Subjects: 2n gamete -- interploid cross -- Lilium -- odd‐allotetraploid -- sexual polyploidization; Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12932
• Languages: English
• ISSNs: 0179-9541

Abstract

Abstract: 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.