Breeding evaluation of pepper lines obtained by in vitro anther culture

摘要

The comparative breeding evaluation was carried out with six advanced pepper lines (Capsicum annuum L.) with androgenic origin and their initial pepper variety Hebar during the period 2008 - 2010 in field conditions at Plovdiv, Bulgaria. The genotypes were characterized by total and standard yield, plant height and fruit traits: length, width, wall thickness and weight. The response of two lines (4 and 6) and control variety to the Verticillium wilt was also investigated on artificial infected background. According to the results of the experimental work standard and total yield in all androgenic lines were higher compared to the initial variety but significant differences were established only for lines 1, 2, 4 and 6. Line 6 was characterized with the highest standard yield (4009 kg/da) followed by line 2 (3829 kg/da). They exceeded variety Hebar with 42.26% and 35.89%, respectively. Line 2 formed the heaviest (61.31 g) and longer (11.24 cm) fruits than most studied genotypes. Anther-derived lines were also with a good uniformity by studied traits. In line 6 was registered lower index of infestation byVerticillium dahliae Kleb. than the control during the investigated period. These perspective lines will be included as valuable genetic resources for future pepper breeding programs for development of new varieties.