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Comparative study of abiotic environmental factors in broomrape (Orebanche cumana Wallr.) infested and non-infested sunflower areas of Serbia and Argentina
(Paris : International Sunflower Association, 2012)
In several main sunflower producing regions, the parasitic weed Orobanche cumana (Broomrape) is the most serious biotic crop constraint. This weed, native of the Caucasus region, has progressively migrated to all Eurasia. ...
Long-term influence of cultural practices on sunflower yields in commercial production in Serbia
(Paris : International Sunflower Association, 2012)
Sunflower is one of the main crops in Serbia, with average acreage of 200000 ha. Economic difficulties associated with the transition have caused significant reduction in sunflower yields. The aim of this paper was to ...
Modeling of environmental causes of hybrid by sowing date interaction in sunflower: a statistical approach
(Paris : International Sunflower Association, 2012)
The analysis of agronomic crop trials is usually complicated by the presence of hybrid by environment interaction, In this study the effect of selected environmental variables on hybrid by sowing date interaction in ...
Feasibility of keeping F, interspecific sunflower hybrids
(Paris : International Sunflower Association, 2012)
Helianthus genus comprises 14 annual and 37 perennial species. Perennial species reproduce vegetatively (rhizomes, tubers) so that it is relatively easy to maintain them in ex situ collections in the field. Hybrid plants ...
Influence of substrate, chemical treatment and length of storage on sunflower seed germination
(Paris : International Sunflower Association, 2012)
For determination of sunflower seed quality several substrates are in use: sand, soil, compost and filter paper where sand is most commonly used. Sand enables good contact of seeds and substrate and decreases possibility ...
Genetic diversity of Macrophomina phaseolina isolates from different regions and host plants
(Paris : International Sunflower Association, 2012)
Macrophomina phaseolina (Tassi) Goid. is a soil borne pathogen with a wide host range which causes disease on more than 500 cultivated and wild plant species. The absence of host specificity and its geographic distribution ...
Mode of inheritance and combining ability for seed yield and morphophisiological components of yield in sunflower (Helianthus annuus L.)
(Paris : International Sunflower Association, 2012)
Used in this study were 13 new divergent cms inbred lines (A) originating from four interspecies populations originating from three annual (H. debilis, H. praecox runyoni, H. deserticola) and one perennial (A. resinosus) ...
Estimation of combining abilities in sunflower (Helianthus annuus L.)
(Paris : International Sunflower Association, 2012)
In commercial production, sunflower hybrids are more represented than open pollinated varieties. The basic advantage of hybrids over varieties is that the hybrids allow the use of heterosis. Sunflower hybrids are more ...
Screening perennial Helianthus species for powdery mildew
(Paris : International Sunflower Association, 2012)
Powdery mildew (Erysiphe cichoracearum) has been reported as a potential constraint for sunflower growing in regions with warm climate. Severity of disease varies depending on the sunflower genotype. Aim of this research ...
Broomrape resistance in newly developed sunflower inbred lines
(Paris : International Sunflower Association, 2012)
Broomrape (Orebanche cumana Wallr.) is considered to be one of the most severe constrains in sunflower (Helianthus annuus L.) production. Rapid appearance of new races requires continuous search for new sources of resistance ...