Abstract

LAGOS-SANTANDER, LIZ KATHERINE; DUARTE-ALVARADO, DAVID ESTEBAN  and  LAGOS-BURBANO, TULIO CÉSAR. Genotype-by-environment interaction of Solanum quitoense (Lam.) using the AMMI model. rev.colomb.cienc.hortic. [online]. 2024, vol.18, n.2, e17442.  Epub July 31, 2024. ISSN 2011-2173.  https://doi.org/10.17584/rcch.2024v18i2.17442.

Research on genetic improvement for the cultivation of lulo (Solanum quitoense Lam.) in Colombia is limited. Specifically, research related to genotype-by-environment interaction (GEI) and stability in agronomic traits is scarce. This study aimed to identify superior genotypes by evaluating GEI and the stability of fruit weight (FW), ascorbic acid (AA), and yield among 10 half-sib families (HSF). Four trials were established at San Pedro de Cartago, Arboleda, Tangua and La Union of the department of Nariño (Colombia), using the randomized complete block design with four repetitions. To analyze GEI, the additive main effects and multiplicative interaction (AMMI) model and some AMMI stability parameters were used. In Tangua, HSF7 and the control exhibited specific adaptation with yields of 12.82 and 13.41 t ha-1, respectively, and FW greater than 100 g. In Arboleda, HSF29 obtained the highest yield (16.14 t ha-1) with an FW of 100.53 g. HSF4, HSF28 and HSF49 reached yields above 9.0 t ha-1 and a FW greater than 100 g, indicating their stability and suitability for any of the environments evaluated. HSF25 in AA and HSF29 in yield presented specific adaptation in Arboleda. Stable families across environments with good yield were HSF4, HSF28, and HSF49, with HSF4 and HSF28 showing higher values in two of the three traits, and HSF49 excelling in all three variables. These families can be used in plant breeding programs as parents or distributed to farmers as improved varieties.

Keywords : adaptability; environments; lulo; yield; fruit weight; ascorbic acid.

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