NEW WINTER-WHEAT VARIETY - GK-DELIBAB DEVELOPED VIA COMBINING CONVENTIONAL BREEDING AND IN-VITRO ANDROGENESIS

Wheat (Triticum aestivum L.) cultivar 'GK Delibab' was improved and re leased in 9 yeats combining conventional breeding steps and plant biot echnology methods. 'GK Delibab' is derived from a multiple cross made in 1984. After F-2 selection, haploids were induced from F-3 generatio n in anther culture. Fertile doubled haploid (DH) seeds and lines obta ined via colchicine treatment were multiplied and tested further in nu rsery. After three years of official tests at National Institute for A gricultural Quality Control (NIAQC) for registration 'GK Delibab' was registered and released as a winter wheat variety in Hungary. The majo r agronomical advantages of 'GK Delibab' are its excellent winterhardi ness, premium bread making quality and earliness. The performance of ' GK Delibab' suggests that for breeding lines originating from DH plant s may be as valuable as lines originating from traditional breeding so urces.