Gnutikov Alexander A, Nosov Nikolai N, Loskutov Igor G, Rodionov Alexander V, Shneyer Victoria S
N.I. Vavilov Institute of Plant Genetic Resources (VIR), St-Petersburg 190000, Russia.
Komarov Botanical Institute (BIN RAS), St-Petersburg 197376, Russia.
Plants (Basel). 2025 May 21;14(10):1550. doi: 10.3390/plants14101550.
The possible origin of four cultivated species of the genus of different ploidy and different subgenome composition (, , , and ) from possible wild species was investigated. The region of the internal transcribed spacer ITS1 and the 5.8S rRNA gene in the cultivated species was studied with next-generation sequencing (NGS), and the patterns of occurrence and distribution of the ribotypes were compared among them and with those of the wild species. According to these data diploid, is more closely related to the diploid than to polyploid oats, and it could have evolved independently of polyploid cultivated species. The tetraploid could be a cultivated derivative of . Two hexaploid cultivated species, and , could have a different origin; could be the cultivated form of , whereas could originate independently. It was found that the oat species with the A and C subgenomes, even with strong morphological and karyological differences, could intercross and pass the further stages of introgression producing a new stable combination of genomes. Our data show that almost all species of could form an introgressive interspecies complex.
研究了不同倍性和不同亚基因组组成（、、、）的该属四个栽培物种可能的野生起源。利用新一代测序（NGS）技术研究了栽培物种中内转录间隔区ITS1和5.8S rRNA基因区域，并比较了它们之间以及与野生物种的核糖体类型的出现和分布模式。根据这些数据，二倍体与二倍体的亲缘关系比与多倍体燕麦更近，并且它可能独立于多倍体栽培物种进化而来。四倍体可能是的栽培衍生物。两个六倍体栽培物种和可能有不同的起源；可能是的栽培形式，而可能独立起源。研究发现，具有A和C亚基因组的燕麦物种，即使在形态学和核型上有很大差异，也可以杂交并进入渐渗的进一步阶段，产生新的稳定基因组组合。我们的数据表明，该属几乎所有物种都可以形成一个渐渗种间复合体。
