K Uma Maheswari and K Hari Babu
Ten non-reciprocal F, hybrids involving five parental lines of pumpkin were evaluated for yield and its components to assess the genetic variation, heritability, genetic advance and segregation pattern. Moderate GCV and PCV were recorded for number of seed for fruit, number of fruits per vine, number of branches per vine, vine length and fruit weight while low GCV and PCV volumes observed for days to first male and female flower opening. Among the traits, fruit weight, yield per vine, vine length, number of fruits per vine recorded high heritability coupled with moderate genetic advance as per cent of mean indicated that the additive genes govern these characters and selection will be effective for improvement of such traits. The cross CM-45 X CM-12 depicted more percentage of Total Transgressive Segregants (TTS) and Specific Transgressive Segregants (STS) for fruit weight and yield per vine. Based on segregation pattern it can be deduced that the crosses CM-14 X CM-12 in respect of fruits per vine and CM-45 X CM-12 in respect of yield per vine are highly desirable and can be utilized to obtain high yielding genotypes in future generations.
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