Abstract
An evaluation of seeding density (60, 120, and 180 kg ha-1) with six durum wheat and two bread wheat genotypes, was carried out at the Norman E. Borlaug Experimental Station during the fallwinter 2021-2022 crop season. An experimental alpha lattice design was used with three replications; the plot size consisted of two beds five meters long, separated by 80 cm and with three rows. Highly significant statistical differences were found between seed densities and between the genotypes evaluated; the best seed densities (p ≤ 0.05) were 120 and 180 kg ha-1, with grain yields of 7,319 and 7,425 kg ha-1, respectively. Genotypes with the highest grain yield were: STOT (STOT//ALTAR 84/ALD/3/PATKA_7/YAZI_1/4/SOMAT_3/PHAX_1// TILO_1/LOTUS_4/5/SOOTY_9/RASCON_37//WODUCK/CHAM_3/6/BAROYECAORO C2013/7/WID22202/4/SORA/2*PLATA_12//SOMAT_3/3/AJAIA_12/F3LOCAL(SEL.ETHIO. 135.85)//PLATA_13/5/CF4-JS 21//TECA96/TILO_1, CDSS13B00720T-099Y-099M-1Y-4M0Y) with 7,669 kg ha-1, followed by Noroeste C2021 (7,561), Don Lupe C2020 (7,463), Borlaug 100 (7,392), CIANO M2018 (7,296), TARRO (TARRO_1/2*YUAN_1//AJAIA_13/ YAZI/3/SOMAT_3/PHAX_1//TILO_1/LOTUS_4/4/CANELO_8//SORA/2*PLATA_12/5/CBC 501CHILE/GUANAY/4/CNDO/PRIMADUR//HAI-OU_17/3/SNITAN/7/ALTAR84/ BINTEPE85/3/STOT//ALTAR 84/ALD/4/POD_11/YAZI_1/5/VANRRIKSE_12/SNITAN/6/ SOOTY_9/RASCON_, CDSS14B00835T-099Y-099M-5Y-1M-0Y) (7,282), CENEB Oro C2017 (7,271), while CIRNO C2008 the regional check, showed the lowest grain yield (6,019 kg ha-1).
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