Sjemenarstvo, Vol. 21 No. 5-6, 2004.
Pregledni rad
SUNFLOWER BREEDING AND SEED PRODUCTION IN THE AGRICULTURAL INSTITUTE OSIJEK
Miroslav Krizmanić
; Poljoprivredni institut Osijek, Republika Hrvatska
Ivica Liović
; Poljoprivredni institut Osijek, Republika Hrvatska
Anto Mijić
; Poljoprivredni institut Osijek, Republika Hrvatska
Marijan Bilandžić
; Poljoprivredni institut Osijek, Republika Hrvatska
Sažetak
Sunflower breeding in the Agricultural Institute Osijek started 30 years ago. At that time began a process of creation inbred lines from high oil Russian sunflower varieties that were grown then in Croatia. In breeding work, we began with usage sources of cytoplasmic male sterility (cms) and restorer genes (rf) for fertility restoring in F₁ hybrid generation 25 years ago. During last period, a plenty of inbred lines with good general and specific combining abilities (GCA and SCA) have created. Sunflower breeding as well as breeding of other field crops is the most efficient and environmentally the most accepted way for increasing food quantity and quality. Main goal of our work is creation of new superior hybrids with high grain yield (over 5 t/ha), oil content (over 50%), and high and stable oil yield (over 2 t/ha). For realization of these goals, it is needed to create hybrids with short to middle high stalk, increase resistance to logging and drought, and increase harvesting index. Special attention is devoted to creation inbred lines with emphasized tolerance to dominant pathogens: Plasmopara halstedii, Alternaria helianthi, Macrophomina phaseolina, Phoma macdonaldi, Sclerotinia sclerotiorum and Phomopsis helianthi. Furthermore, it is necessary to create hybrids of shorter vegetation (120- 125 days), with longer duration of leaf area (Leaf area duration - LAD). Result of hereunto work is 12 approved sunflower hybrids that have given a large contribution to increasing sunflower production in Republic of Croatia. Also, in Republic of Slovakia have approved two sunflower hybrids of the Agricultural Institute Osijek. Sunflower qualitative seed production is the most important process in maintenance of genetic purity of lines and hybrids. In Croatia, we often meet a problem of finding appropriate areas and required space isolation. Due to high oil content of our new sunflower hybrids generation, a special attention have to be given to on time harvesting and fast delivery of seed to processing facilities.
Ključne riječi
sunflower; breeding; hybrids; seed; seed production
Hrčak ID:
167985
URI
Datum izdavanja:
29.7.2004.
Posjeta: 885 *