Hybrid rapeseed

Hybrid rapeseed

Description

Regardless of the political-economic aspects that have influenced the development of the crop for many years, COLZA represents, thanks to its great adaptability to most of the Italian pedoclimatic environments, a culture of great agronomic and environmental intrigue. In central and southern Italy, the inclusion of oilseed rape in single grain cereals may represent the only alternative, since the autumn-winter cycle guarantees greater production stability compared to spring-summer crops such as sunflower. In addition to the classic "free pollinating" varieties, the "varietal associations" (AV) and the true F1 hybrids have been available for some years on the market. The "varietal associations" are obtained by mechanically mixing seeds of a male-sterile hybrid and of one or two varieties with pollinating functions, in the 75-80% ratio of the male-sterile line and 20-25% of the pollinating line (s). The production potential of AV seems to be 10-15% higher than those of free-pollinating varieties. True hybrids (F1) have the male fertility restored, therefore the fertilization is entrusted to the entire population and not to 15-20% of the plants, as happens in the AV. Compared to the latter, true hybrids are credited with better productivity, greater seed strength, better tolerance to diseases.

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