This mutant was detected in M2 generation and was homozygous for earliness in M3, M4, M5 generations. Registration of this mutant variety with the name 'NOVENTA1, was performed in Hungary in 1989 (Reg. No 1117/89). The mutant variety 'Noventa' is a new source of genes conferring an extreme earliness. Crossing early varieties of different origin to accumulate the early maturity genes is an effective method to develop extremely early soybean cultivars with improved agronomic characters for cool, long day-length, and short-growing season.