Аннотация
The article presents the results of breeding work in the direction of creating ultra-early and early maturing soybean varieties for cultivation in the northern regions of the Republic of Kazakhstan, specifically Kostanay, Pavlodar and Akmola regions. The work is conducted in according to the full scheme of the breeding process. Two Kazakhstani scientific organisations, namely LLP "Agricultural Experimental Station "Zarechnoye" (under the guidance of LLP "Kazakh Research Institute of Agriculture and Plant Industry"), are engaged in the process of creating ultra-accelerated varieties. The success rate of hybridisation varies between 4% and 15%. Soybean varieties have been developed and transferred: 000 ripeness group - Rusiya, growing season 85-90 days, average yield – 26,6 c/ha; in 00 ripeness group - Svetlyachok, growing season 90-95 days, average yield – 27,7 c/ha; Ivushka, growing season 90-95 days, average yield – 24,0 c/ha; in 0 ripeness group - Severnoye siyanie, growing season 105-107 days, average yield – 23,3 c/ha. The Ivushka variety is approved for production in Kostanay, Pavlodar and Akmola regions.