What type of study is this?

September 5, 2025Open Access

Understanding gene interactions controlling resistance to pepper yellow leaf curl disease through phenotype-based analysis

Puntos clave

Genotypes resistant to pepper yellow leaf curl disease were identified, highlighting critical traits for cultivation.
Resistant genotypes 'F6074' and 'IPBC12' showed contrasting susceptibility compared to 'IPBC5' and 'YUNI', emphasizing genetic variability.
Phenotype-based analysis across 180 individuals in the F2 population revealed gene interactions influencing resistance levels.
The findings suggest resistance to PYLCD involves two genes with epistatic interactions, supporting further breeding efforts.

Resumen

Pepper yellow leaf curl disease (PYLCD) is the primary disease that affects chili plants, resulting in a loss of quality and quantity. The identification of chili plants resistant to PYLCD is a solution to support optimal chili cultivation. The purpose of this study was to estimate genetic parameters to obtain information on the genetic control of chili resistance to PYLCD. The genotypes used in this study consisted of four parental, four hybrid genotypes, and 180 individuals of the F2 population. The results showed that the genotypes "F6074" and "IPBC12" were categorized as resistant, while the genotypes “IPBC5” and “YUNI” were categorized as susceptible. The distribution of resistance level in chili peppers to yellow curly leaf disease tends to follow a ratio of 13:3, with a dominance of susceptible traits. The assumption for this phenomenon is that resistance to PYLCD is controlled by at least two genes. Both genes have dominant and recessive epistatic interactions. Keywords: Begomovirus; chi-square; epistasis; resilience

Leer artículo completoexternamente

Me gusta

Guardar

Ver artículo completo