AGRONOMIC CHARACTERIZATION OF AN EMS-MUTAGENIZED POPULATION FOR SELECTING HIGH-YIELDING AND GLUTENENRICHED INDUSTRIAL WHEAT

Le résumé fourni par la source

A mutant population was generated using a popular wheat cultivar of Bangladesh; BARI GOM-28, with ethyl methanesulfonate (EMS) to create diversity in terms of different agronomic characteristics and grain quality parameters. An EMS concentration ranging from 0.2% to 1.2% was used and the optimum was found to be 0.8%. This study was initiated with 16,000 seeds, where 1,581 lines survived under greenhouse conditions up to M4 generation. Through 3 subsequent field trials, 3 promising lines, namely, 0037/17, 0020/17 and 0023/17 were selected with enhanced spike length, number of spikes per plant, number of spikelets per spike, number of grains per spike, grains weight per plant and 1000-grain weight. Such improved agronomic traits contributed towards a greater yield potential of 0037/17 (5.94-6.10 t ha-1), 0020/17 (5.47-5.54 t ha-1) and 0023/17 (4.97-5.20 t ha-1) than BARI GOM-28 (3.63-3.69 t ha-1) in the multi-location trial. Improvement in certain bread-making qualities like wet gluten content (>28%) and total protein content (~13%) was also observed and compared to BARI GOM-28 which had 22% wet gluten and 11% total protein. Therefore, these mutant lines could be used as a valuable resource for genetic studies to dissect the function of the genes controlling such desired parameters as well as superior breeding lines.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.