Abstract
Chilli (Capsicum annuum L.) fruit rot disease caused by Colletotrichum capsici under tropical and subtropical conditions, results in qualitative and quantitative yield losses. Twenty (20) isolates of C. capsici were collected from conventional chilli growing areas of Tamil Nadu. In culture, most of the isolates produced cottony, fluffy or suppressed colonies. However, no significant differences were noticed in shape and size of conidia. The reaction of the 20 isolates on an indigenously developed differential set of Capsicum cultivars indicated the existence of different virulences in Tamil Nadu chilli populations. The genetic relationship between 20 morphological groups recognized within C. capsici was investigated using random amplified polymorphic DNA (RAPD) analysis. Molecular polymorphism generated by RAPD confirmed the variation in virulences of C. capsici and different isolates were grouped into two large clusters. The pathological and RAPD grouping of isolates suggested no correlation among the test isolates. Key words: Chilli, Colletotrichum capsici, variability, RAPD.
Highlights
Chilli (Capsicum annuum L.) is an important spice crop ofIndia
Infection of C. capsici will be higher in mature stage than in the early stage of chilli plant (Suthin Raj et al, 2013)
The objective of this study was to investigate the variability in C. capsici populations infecting chillies by using morphological, pathological and molecular approaches
Summary
Chilli (Capsicum annuum L.) is an important spice crop ofIndia. Chilli originated in the Latin American regions ofNew Mexico as a wild crop in and around 7500 BC. Chilli (Capsicum annuum L.) is an important spice crop of. Chilli originated in the Latin American regions of. New Mexico as a wild crop in and around 7500 BC. It is affected by several fungal, bacterial and viral diseases, of which chilli anthracnose causes considerable damage, inflicting severe quantitative and qualitative losses. The estimated loss due to this disease ranged from 8 to 60%. In different parts of India (Suthin Raj et al, 2009). The fungus Colletotrichum capsici infects both unripe (green) and ripe (red) chilli fruits, and survives on seed as acervuli and microsclerotia (Suthin Raj et al, 2009). Infection of C. capsici will be higher in mature stage than in the early stage of chilli plant (Suthin Raj et al, 2013)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
