Diallel analysis in cowpea aiming at selection for extra-earliness

• Published in: Crop breeding and applied biotechnology Vol. 16; no. 3; pp. 167 - 173
• Main Authors: Oliveira, Rosana Mendes de Moura, Filho, Francisco Rodrigues Freire, Ribeiro, Valdenir Queiroz, Lopes, Ângela Celis de Almeida, Bernardo, Karla Annielle da Silva, Cruzio, Akemi Suzuki
• Format: Journal Article
• Language: English; Portuguese
• Published: Vicosa Crop Breeding and Applied Biotechnology 01.09.2016; Brazilian Society of Plant Breeding
• Subjects: AGRONOMY; BIOTECHNOLOGY & APPLIED MICROBIOLOGY; combining ability; Cultivation; Flowering; flowering and maturity; Inbreeding; Parents; Vigna unguiculata; combining ability; flowering and maturity; Vigna unguiculata
• ISSN: 1984-7033; 1518-7853; 1984-7033
• DOI: 10.1590/1984-70332016v16n3a26

In Brazil, the production of cowpea is concentrated in the Northeast and North; however, in recent years, its cultivation has expanded to the Cerrado biome of the Brazilian Midwest region, where it is incorporated into production arrangements in the form of off-season. In this work, it was carried out a study on the extra-earliness in cowpea in order to select parents and crosses with cycle shorter than 60 days. A test with an F2 generation of a complete diallel cross involving five parents and ten crosses was carried out in a complete randomized block design with six replications. The parents IT82D-889 and AU94-MOB-816 stood out for extra-earliness flowering, while IT82D-60 and IT82D-889 stood out for extra-earliness maturity. The crosses IT82D-60 x AU94-MOB-816 and IT82D-60 x IT82D-889 were more promising in extra-earliness flowering, while IT82D-60 x IT82D-889 and IT82D-60 x MNC04-789B-119-2-3-1 were more promising for extra-earliness maturity.