Gene action in the resistance of peppers (Capsicum annuum) to Phytophthora stem blight (Phytophthora capsiciL.)

✍ Scribed by R. Bartual; E. A. Carbonell; J. I. Marsal; J. C. Tello; T. Campos

• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 434 KB
• Volume: 54
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00039608

✦ Synopsis

The variation among single and three-way crosses derived from seven lines of pepper (Capsicum annuum) selected for resistance to Phytophthora capsici was analyzed into statistical-genetic components due to general and specific combining abilities and additive-by-additive epistasis. Indirect evidence of higher order epistasis was also estimated. Epistasis was a principal source of variation. It was correlated with the level of aggressiveness of the pathogen. A breeding method such as recurrent selection seems to be the most appropriate to improve resistance to the fungus.