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Introgression of drought-resistance gene(s) from Helianthus argophyllus to Helianthus annuus specie, using embryo rescue techniques

Domenii publicaţii > Biologie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Florentina Sauca

Editorial: Total publishing (www.totalpublishing.ro), Romanian Agricultural Research, No. 27,, p.47-51, 2010.

Rezumat:

In order to improve drought resistance of sunflower in the context of global warming and to accelerate this improvement, introgression of resistance genes from wild species was attempted, using embryo rescue techniques, combined with classical procedures to improve crossing, self-pollination and backcrossing. Thirty four approved or pending approval lines (B and C) were tested for combination capacity with the wild Helianthus argophyllus. After crossing between H. annuus and H. argophyllus, 6 generation in two years (2008-2010) were obtained, as follows:F1 (interspecific crossing-harvest immature hybrid embryos), BC1FI; BC2FI; BC3F1; BC4F1; BC4F2. In case of the crossing between species H. argophyllus and H. annuus only four generation (F1;BC1FI; BC1F2; BC2F1) in 2 years were obtained, due to the long vegetation period of the wild species, the long flowering period, the high degree of branching and not finally higher incompatibility between the two species.
Acknowledgements:
This research was supported by the Word Bank -MAKIS-AG141554/22.04.2008

Cuvinte cheie: floarea-soarelui, embrioni imaturi, salvarea embrionilor, icrcisari interspecifice // sunflower, immature embryos, embryo rescue, interspecific crossing

URL: http://incda-fundulea.ro

Introgression of drought-resistance gene(s) from Helianthus argophyllus to Helianthus annuus specie, using embryo rescue techniques

Domenii publicaţii > Biologie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Florentina Sauca

Editorial: Total publishing (www.totalpublishing.ro), Romanian Agricultural Research, No. 27,, p.47-51, 2010.

Rezumat:

In order to improve drought resistance of sunflower in the context of global warming and to accelerate this improvement, introgression of resistance genes from wild species was attempted, using embryo rescue techniques, combined with classical procedures to improve crossing, self-pollination and backcrossing. Thirty four approved or pending approval lines (B and C) were tested for combination capacity with the wild Helianthus argophyllus. After crossing between H. annuus and H. argophyllus, 6 generation in two years (2008-2010) were obtained, as follows:F1 (interspecific crossing-harvest immature hybrid embryos), BC1FI; BC2FI; BC3F1; BC4F1; BC4F2. In case of the crossing between species H. argophyllus and H. annuus only four generation (F1;BC1FI; BC1F2; BC2F1) in 2 years were obtained, due to the long vegetation period of the wild species, the long flowering period, the high degree of branching and not finally higher incompatibility between the two species.
Acknowledgements:
This research was supported by the Word Bank -MAKIS-AG141554/22.04.2008

Cuvinte cheie: floarea-soarelui, embrioni imaturi, salvarea embrionilor, icrcisari interspecifice // sunflower, immature embryos, embryo rescue, interspecific crossing

URL: http://incda-fundulea.ro