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SUNFLOWER

 
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ROMANS

 

 

Simple interline hybrid.


Originator - Plant Production Institute nd. a V.Ya. Yuryev of NAAS.


It has been entered in the Plant Variety Register of Ukraine for growing in steppe and forest-steppe zones of Ukraine since 2010.
Approbation characteristics: plant height - 160 cm; slightly convex calathid up to 20 cm in diameter; huskness - 22%; incrustation – 99.6%; mass of 1,000 seeds - up to 50 g; oil content in seeds – up to 50.0%.


Biological features: ripeness group – middle-early, growing season – 104 days. Lodging resistance- high. Shedding resistance - high. Downy mildew resistance - high. Broomrape resistance - high. Sufficiently drought-resistant and root rot resistant.

Economic features: The hybrid crop potential – 4.0 t/ha.Peculiarities of cultivation technology: recommended density – 50,000 plants per hectare. Commercial crops need no desiccation. Preparation of soil and seeds for sowing is conventional.


Peculiarities of seed industry: The parent line seeds are sown in two phases: the the pollen fertility restorer line is sown after appearance of the female parent seedlings. Mineral fertilizers at the dose of N30 P30 K30 should be applied. The yield capacity of the female parent line is up to 1.3 t/ha depending on the presence of honey-bee colonies (the norm is 3 hives/ha). No desiccation is needed. The yield of certified seeds is 65-70%.

 
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