AGROECOLOGICAL ADAPTIVITY OF YELLOW LUPIN GENOTYPES

For the first time the Method for evaluation of agro-ecological adaptivity developed by The Samar Federal center of the Russian academy of sciences was used for the characteristic of the yellow lupin genotypes under the global warming conditions. A complex index was developed; it allows evaluate every tested sample for its variety of responses to the changes of the agro-climatic conditions of the year and cultivation localization. Yellow lupin varieties and breeding lines have been tested in a competition test during three years in 2020-2022 in the All-Russian Research Institute of Lupin (Bryansk) and in the Novozybkov Agricultural Experimental Station – branches of the Federal Williams Research Center of Forage Production and Agroecology; five of them have been tested simultaneously in both agro-ecological sites. The received data of the agro-ecological adaptivity of the genotypes’ group tested in the All-Russian Research Institute of Lupin are in the range from 23.21 to - 66.58, and the data of the genotypes tested in the Novozybkov Agricultural Experimental Station – from 24.34 to -73.33. The genotypes have been ranked and distributed for five groups according to the available range. Three samples among five which were tested simultaneously in both agro-ecological sites have the complete concurrence of the groups of agro- ecological adaptivity: the variety Antey is a variety with high adaptivity; the variety Nadezhny has the low adaptivity degree and the variety Vladko has the very low adaptivity degree. The group ranging of the varieties Bulat and Novozybkowsly 100 didn’t result in complete concurrence however it demonstrated the high adaptivity degree in the varieties’ competition test in the All- Russian Research Institute of Lupin; both varieties kept the moderate adaptivity degree under the conditions of Novozybkov Agricultural Experimental Station. The received results confirm the acceptability of using the new methodology for yellow lupin, and its use for lupin breeding will help to develop new adaptive varieties with stable main characters for yield and production quality