THE YIELD FORMATION OF SOWING BULB ONION IN FOREST-STEPPE OF NOVOSIBIRSK PRIOBYE

Ya.F. Zizina, R.R. Galeev
Novosibirsk State Agrarian University

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Summary. The goal object of the research is to examine the bulb onion hybrids for annual crop production. The experiments were conducted in the forest-steppe zone in the extremely continental climatic conditions of Novosibirsk Priobye in 2008-2010. The soils on the trial plot are dark-grey heavy loamy forest soils. The research objects are hybrids of “Seminis” company (the Netherlands) (Candy F₁, Caballero F₁, Barito F₁, Chateau F₁, Teton 112 F₁, Tioga F₁, Red Zeppelin F₁, Fireball F₁) and native bred varieties (Siberian Odnoletniy, Odintsovets, Zolotnitchok and Yukont). It was established that the native varieties have distinguished increase in the leaf area and the highest photosynthetic productivity of sowings: Siberian Odnoletniy – 9,8 thousand m^2-ha and 886,0 thousand m2 day-ha, Odintsovets – 11,2 thousand m^2-ha and 1030,3 thousand m² day^-ha), Zolotnitchok – 9,9 thousand m^2-ha and 922,5 thousand m² day^-ha respectively. Among different maturity groups of the yellow onions the long day onion for storage Tioga F1(42,6 t-ha) has distinguished increase in the productivity – at 12% in comparison with standard. Among the red onions the extra yield to standard for hybrid Red Zeppeling F1 (51,2 t^-ha) was amounted – 48%. According to the viability of hybrids the maximum indexes were established for hybrids Candy F₁ (mid day onion), Barito F₁ (long day onion), Tioga F₁ (long day onion for storage), Fireball F₁ (red long day onion) – 58,0; 73,2; 77,9 и 86,9% preserved bulbs after storage amounted correspondingly.

Keywords: bulb onion, hybrid, variety, leaf area, photosynthetic potential, dynamics of bulb development, yield, biochemical analysis, capacity for survival.