Genomic variation of new cultivars selected from distant hybridization in Lilium
Genomic variation of new cultivars selected from distant hybridization in Lilium
复制标题
百合远缘杂交新品种的基因组变异
DOI：
10.1111/j.1439-0523.2011.01906.x
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发表时间：
2012-02-01
期刊：
影响因子：
2
通讯作者：
Zhou, Shujun
中科院分区：
文献类型：
--
作者：
Zhang, Xianxian;Ren, Guiling;Zhou, Shujun
亚洲百合(AA)、长花百合(LL)、东方百合(OO)和喇叭百合(TT)的园艺性状相结合是百合育种的主要趋势之一。利用基因组原位杂交技术对百合不同类群间杂交选育的19个新品种的基因组变异进行了研究，以确定这些新品种是如何产生的。其中2个是二倍体(2n=2x=24)，选自F-1OT杂交种，16个是异源三倍体(2n=3x=36)，主要来自2n配子，较少可能来自二倍体x双二倍体杂交，1个品种是异源四倍体，有3个L基因组和1个O基因组。结果表明，异源三倍体是百合新品种选育的发展趋势，大多数异源三倍体百合品种来源于F-1远缘杂交产生的2n配子。
One of the main trends in Lilium breeding is to combine horticultural traits of Asiatic (AA), Longiflorum (LL), Oriental (OO) and Trumpet (TT) lilies. We used genomic in situ hybridization to examine the genomic variation of 19 new cultivars, bred by hybridization between different lily groups, to determine how the cultivars arose. Two of them are diploid (2n = 2x = 24), selected from F-1 OT hybrids, 16 are allotriploid (2n = 3x = 36), mainly from 2n gametes and less possibly from diploid x amphidiploid crosses; and one cultivar was allotetraploid with three L-genomes and one O-genome. Our results indicate that allotriploid breeding is a future trend for new cultivars in Lilium and that most of the allotriploid lily cultivars originate from 2n gametes produced by F-1 distant hybrids.