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Bulgarian Journal of Crop Science   ISSN 0568-465X
Array ( [session_started] => 1685500640 [LANGUAGE] => EN [LEPTON_SESSION] => 1 )


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Study of hybrid material originated from interspecific crosses with wild Helianthus annuus L. for resistance to diseases and parasite broomrape
Daniela Valkova, Julia Encheva, Valentina Encheva, Pepa Shindrova, Michail Christov
Abstract: Hybrid plants were obtained by crossing between fve male sterile sunflower lines and 20 accessions of wild annual species Helianthus annuus L. form the collection of wild sunflower species in DAI, General Toshevo. Resistance of F
1 and F2 hybrid plants to the cause agents of gray spots (Phomopsis helianthi Munt.-Cvet. et al.) and black spots on sunflower (Phoma macdonaldii), Alternaria leaf spot, downy mildew (Plasmopara helianthi Novot.) and the parasite broomrape (Orobanche cumana Wallroth) was studied. Some morphological, phenological and biochemical characters were established. Data obtained from the quarantine plots and in laboratory conditions showed that plants from some of the crosses were with resistant type of reaction to one or more diseases. Differences in morphological characters were observed between plants from different crosses and among plants from the same cross. Transfer of fertility restorer genes for the CMS PET1 was established.
Keywords: Helianthus annuus; hybridization; resistance
Date published: 2017-08-09
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