With the objective of identifying high productive and better quality onion cultivars for the tropical semi-arid region of Brazil, field trials were conducted at Petrolina, Pernambuco State, Brazil, from February until July of 1996.The experimental design was a randomized complete blocks with four repetitions and twenty treatments (Cultivars Granex-429, Texas Grano-PRR, Brownsville, Houston, Texas Grano-502, Texas Grano-438, Conquista, Composto IPA-6, Belém IPA-9, Franciscana IPA-10, Valeouro IPA-11, Alfa Tropical (CNPH-6179), CNPH-5898, CNPH-6074, CNPH-6040, CNPH-6067, Bola P. Empasc, XP-1, XP-2 and Crioula Mercosul). Production of commercial bulbs ranged forms 21.41 to 61.78 ton/ha. Texas Grano-PRR had the highest yield (61.78 ton/ha), followed by Granex-429 (58.28 ton/ha), Texas Grano-438 (56.97 ton/ha), Brownsville (55.38 ton/ha), Texas Grano-502 (53.97 ton/ha) and Houston (53.35 ton/ha).
Allium cepa; adaptation of cultivars; yield; bulb classification
