Natural and Artificial Screening of Various Chilli Genotypes to Assess Resistance for Chilli Leaf Curl Virus under South Gujarat Conditions

Abstract

Aims: The purpose of this work was to evaluate and identify chilli (Capsicum annuum L.) genotypes resistant to Chilli Leaf Curl Virus under natural and artificial screening circumstances, with an emphasis on their suitability for cultivation in south Gujarat. Study Design: The investigation used a Randomised Complete Block Design (RCBD) with 25 chilli genotypes and 3 replications. Place and Duration of Study: The research was carried out during the winter season of 2024-2025 at Jarvi Seeds Pvt. Ltd. at Bharadia, Bharuch, Gujarat. Methodology: 25 genotypes were examined in natural field circumstances and artificially inoculated with virulent whiteflies. Standard rating scales were used to assess disease incidence, severity and reaction. Data were statistically analysed to divide genotypes into resistance categories. Results: The results showed that genotype responses varied significantly. Under natural screening, 2 genotypes - KSP 1234 Mithila and US 730 were highly resistant while, 20 genotypes were resistant and 3 genotypes were moderately resistant. Under artificial screening, only 3 genotypes - KSP 1234 Mithila, US 730 and US 1081 remained resistant, 16 genotypes showed moderate resistance and 6 genotypes became vulnerable. Disease pressure and reaction severity were often higher under artificial settings. Conclusion: KSP 1234 Mithila and US 730 have been discovered as stable and long-lasting resistance sources. Artificial screening was more reliable in finding real resistance, providing useful insights for chilli leaf curl virus resistant genotype in Gujarat.