Improvement of Brassica napus via interspecific hybridization between B. napus and B. oleracea
Abstract The large natural variation existing in Brassica oleracea offers a promising approach to improving B. napus (rapeseed). However, the cytogenetic and genetic characterizations of the interspecific hybridization between B. napus and B. oleracea remain poorly understood. Here, the chromosome behavior of F1 triploid hybrids between B. napus and B. oleracea was observed. Various chromosome pairings in pollen mother cells at diakinesis were found with the predominant configuration of 9II + 10I. The segregation pattern of 9:19 had the highest frequency relative to theoretical distribution estimated at anaphase I. Although the fertility was poor in the F1 generation, it recovered to normal levels in only a few generations. Additionally, B. napus-like individuals in the F3 and F4 generations, referred as new-type rapeseed, showed diverse genetic variation relative to current B. napus and strong heterotic potential. Accordingly, a significantly positive correlation between the introgressed B. oleracea genomic components and heterosis was observed in hybrids made with the new-type rapeseed lines. Our data suggest that the introgression of genetic components of B. oleracea can expand the genetic variation and improve the heterotic potential of rapeseed..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2014 |
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| Erschienen: |
2014 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:34 |
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| Enthalten in: |
Molecular breeding - 34(2014), 4 vom: 10. Aug., Seite 1955-1963 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Qinfei [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
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| Anmerkungen: |
© Springer Science+Business Media Dordrecht 2014 |
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| doi: |
10.1007/s11032-014-0153-9 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2047847028 |
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| 245 | 1 | 0 | |a Improvement of Brassica napus via interspecific hybridization between B. napus and B. oleracea |
| 264 | 1 | |c 2014 | |
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| 520 | |a Abstract The large natural variation existing in Brassica oleracea offers a promising approach to improving B. napus (rapeseed). However, the cytogenetic and genetic characterizations of the interspecific hybridization between B. napus and B. oleracea remain poorly understood. Here, the chromosome behavior of F1 triploid hybrids between B. napus and B. oleracea was observed. Various chromosome pairings in pollen mother cells at diakinesis were found with the predominant configuration of 9II + 10I. The segregation pattern of 9:19 had the highest frequency relative to theoretical distribution estimated at anaphase I. Although the fertility was poor in the F1 generation, it recovered to normal levels in only a few generations. Additionally, B. napus-like individuals in the F3 and F4 generations, referred as new-type rapeseed, showed diverse genetic variation relative to current B. napus and strong heterotic potential. Accordingly, a significantly positive correlation between the introgressed B. oleracea genomic components and heterosis was observed in hybrids made with the new-type rapeseed lines. Our data suggest that the introgression of genetic components of B. oleracea can expand the genetic variation and improve the heterotic potential of rapeseed. | ||
| 650 | 4 | |a Euploid | |
| 650 | 4 | |a Genetic diversity | |
| 650 | 4 | |a Heterosis | |
| 700 | 1 | |a Zhou, Qinghong |4 aut | |
| 700 | 1 | |a Mei, Jiaqin |4 aut | |
| 700 | 1 | |a Zhang, Yongjing |4 aut | |
| 700 | 1 | |a Li, Jiana |4 aut | |
| 700 | 1 | |a Li, Zaiyun |4 aut | |
| 700 | 1 | |a Ge, Xianhong |4 aut | |
| 700 | 1 | |a Xiong, Zhiyong |4 aut | |
| 700 | 1 | |a Huang, Yinjing |4 aut | |
| 700 | 1 | |a Qian, Wei |4 aut | |
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