Study of the genetic structure of a Brassica napus L. canola population derived from six interspecific crosses of B. napus × B. oleracea
| Autor: | Jani Bhavikkumar, Azam Nikzad, Berisso Kebede, Habibur Rahman |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study Genetic diversity food.ingredient biology Population Brassica Plant Science Horticulture biology.organism_classification 01 natural sciences Genome Crop 03 medical and health sciences 030104 developmental biology food Agronomy Genetic structure Brassica oleracea education Canola Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Canadian Journal of Plant Science. 101:315-327 |
| ISSN: | 1918-1833 0008-4220 |
| DOI: | 10.1139/cjps-2020-0059 |
| Popis: | Broadening the genetic base of the C genome of Brassica napus L. canola is needed for continued improvement of this crop. For this, we developed few hundred canola lines from B. napus × Brassica oleracea L. interspecific crosses involving a B. napus canola line and six B. oleracea accessions belonging to four varieties, viz. vars. alboglabra, botrytis, capitata, and italica, and following two breeding methods [F2 and BC1 (F1 × B. napus) derived lines]. The objective of this study was to understand the genetic structure of this population regarding the alleles introgressed from B. oleracea by using simple sequence repeat markers and to investigate the inheritance of B. oleracea alleles in these reconstituted canola lines. Marker analysis showed that the four B. oleracea varieties were genetically quite distinct. Several canola lines derived from these six crosses tended to group together with their B. oleracea parent demonstrating that the wide diversity of the B. oleracea gene pool can be exploited for broadening the genetic base of the C genome of B. napus canola. Loss of several B. oleracea alleles occurred during the development of these inbred lines. While comparing the two breeding methods for introgression of B. oleracea alleles, significantly greater loss of alleles occurred in the F2-derived population as compared with the BC1-derived population. Thus, the knowledge from this study can be used for efficient introgression of exotic alleles from B. oleracea into B. napus for broadening the genetic base of this crop. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|