caa a22 4500 378916890 CHVBK 20180305123555.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.2298/hel0441151n doi (NATIONALLICENCE)gruyter-10.2298/hel0441151n INTERSPECIFIC HYBRIDIZATION BETWEEN H. pumilus nutt. AND H. annuus L. AND THEIR POTENTIAL FOR CULTIVATED SUNFLOWER IMPROVEMENT [Elektronische Daten] LA HIBRIDIZACIÓN DE INTERSPECIES ENTRE H. pumilus NUTT. Y H. annuus L. Y SU POTENCIAL PARA EL ADELANTO DE GIRASOL / HYBRIDATION INTERSPÉCIFIQUE ENTRE H. pumilus NUTT. ET H. annuus L. ET LEUR POTENTIEL DANS L'AMÉLIORATION DU TOURNESOL CULTIVÉ / [Lyudmila Nikolova, Michail Christov, Gerald Seiler] Successful interspecific hybridization was carried out between the wild perennial diploid species Helianthus pumilus Nutt., accession GT-M-172, and cultivated H.annuus L. The cross compatibility between H.pumilus and H.annuus was much higher when the wild species was used as the male in the crosses. Insemination (seed set) was very low in both directions. In order to prove the presence of considerable variability in the early F1 generation, some statistical methods were used for evaluation of morphological traits such as plant height, head diameter, number of disk flowers and insemination. Heterosis was detected for plant height. Cases of partial to complete dominance of the cultivated parent prevailed. A high level of segregation was observed in the F2 generation, therefore, traits depression and transgression were evaluated for plant height, head diameter, number of florets and seed set. A triple phenotypic correlation appeared between three characters in sunflower and one of them was confirmed on genetic level as well. Resistance to Plasmopara helianthi, Orobanche cumana and Phomopsis helianthi was discovered in different progenies of the interspecific hybrids of H.pumilus. This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Helianthus pumilus Nutt nationallicence Helianthus annuus L nationallicence interspecific hybridization nationallicence Nikolova Lyudmila Dobroudja Agricultural Institute - General Toshevo 9520, Bulgaria, Phone:+35958603125; Fax: +35957314448 aut Christov Michail Dobroudja Agricultural Institute - General Toshevo 9520, Bulgaria aut Seiler Gerald USDA-ARS Northern Crop Science Lab., Fargo, North Dakota 58105, USA aut HELIA De Gruyter 27/41(2004-12-01), 151-162 1018-1806 27:41<151 2004 27 helia https://doi.org/10.2298/hel0441151n text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2298/hel0441151n text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nikolova Lyudmila Dobroudja Agricultural Institute - General Toshevo 9520, Bulgaria, Phone:+35958603125; Fax: +35957314448 aut NATIONALLICENCE 700 1- Christov Michail Dobroudja Agricultural Institute - General Toshevo 9520, Bulgaria aut NATIONALLICENCE 700 1- Seiler Gerald USDA-ARS Northern Crop Science Lab., Fargo, North Dakota 58105, USA aut NATIONALLICENCE 773 0- HELIA De Gruyter 27/41(2004-12-01), 151-162 1018-1806 27:41<151 2004 27 helia CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter