Претраживање
Приказ резултата 1-10 од 14
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 ...
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 ...
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 ...
Towards Orobanche resistance in sunflower - SSR analysis of a novel resistance source
(Paris : International Sunflower Association, 2012)
Broomrape is an aggressive parasite that penetrates through the roots of the host, absorbs nutrients directly from the vascular system and causes significant reduction in sunflower yield. Genetic resistance proved to be ...
Laboratory method for detection of tribenuron-methyl resistant sunflower (Helianthus annuus L.)
(Paris : International Sunflower Association, 2012)
Sulphonylureas are potent herbicide group that inhibit synthesis of three essential amino acids, valine, leucine and isoleucine. They have proven to be very effective in controlling broad-leaf weeds. Developing herbicide ...
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 ...
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) ...
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 ...
Influence of seed processing on sunflower seed qualities
(Paris : International Sunflower Association, 2012)
In sunflower seed production it is important to obtain a high quality end product. This depends not only on field conditions and cultural practices applied but also on seed processing. During processing, seed grades are ...
Towards dihaploid production in sunflower - Selection of regeneration medium
(Paris : International Sunflower Association, 2012)
In sunflower breeding, it takes six to eight years to obtain inbred lines that are homozygous. Dihaploid production enables production of completely homozygous material for less than a year thus accelerating breeding ...