Detection of genetic determinants that define the difference in photoperiod sensitivity of Triticum aestivum L. near-isogenic lines

作者：Kiseleva A A^*; Eggi E E; Koshkin V A; Sitnikov M N; Roder M; Salina E A; Potokina E K

来源：Russian Journal of Genetics, 2014, 50(7): 701-711.

DOI：10.1134/S102279541405007X

Identification of genetic determinants that define different degrees of line sensitivity to the photoperiod was acomplished using near-isogenic lines of the soft hexaploid wheat Triticum aestivum L. using SSR markers and markers specific to the Vrn and Ppd genes. It was established that the Ppd-s line contains a dominant Ppd-D1a allele located on chromosome 2D. This allele is characterized by a large deletion in the gene promoter region. For two other lines (Ppd-m and Ppd-w), introgression of the Ppd-B1 gene on chromosome 2B was detected from the parental Sonora variety, which is insensitive to the day length; however, the previously described Ppd-B1a.1 allele was not found. Another polymorphism that can cause weak photoperiodic sensitivity, an increased copy number of the Ppd-B1 gene, was detected for these lines.

• 出版日期2014-7