Genetic Variability and Character Associations for Quantitative Traits of Squash (Cucurbita pepo) Genotypes | ||
| Journal of Plant Production | ||
| Volume 16, Issue 10, October 2025, Pages 609-614 PDF (530.4 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2025.426168.1511 | ||
| Authors | ||
| I. M. E Hassanein1; M. A. Abdein* 2; A. A. M. Rashwan1; A. A. H. El-Shaieny1; G. A. Zayed3 | ||
| 1Hortic. Depart., Fac. of Agric., South Valley University, Qena 83523, Egypt | ||
| 2Seeds Dev. Dep., El-Nada Misr Scientific Research and Development Projects,, Turrell, Mansoura, 35511, Egypt | ||
| 3Hortic. Res. Institute, Agriculture Research Center, 12619 Giza, Egypt | ||
| Abstract | ||
| For the majority of characteristics, there were only minor variations between GCV% and PCV%, suggesting that genetic influences play a significant role in regulating how these traits are inherited. The majority of the traits under study exhibited high GCV/PCV %, according to the results. In terms of yield, the genotypes showed significant and nearly equal genetic advancement. For practically every trait under study, the range of variability between several genotypes was very significant. The potential utility of these traits and genotypes to create breeding programs to increase fruit output and quality was demonstrated by strong estimates of heritability and a high predicted genetic progress. Analysis of correlations showed that variables related to yield had a high genetic connection. Path coefficient analysis identified the number of fruits per plant (direct effect: 1.3786) and average fruit weight (direct effect: 0.7794) as having the strongest positive direct effects on yield. The results suggest that selection based on the number of fruits per plant and average fruit weight would be most effective for improving squash yield. Regarding the relative importance of joint effects, it is obvious that their effective parts were obtained by number of fruits/plant on yield through its associations with each of average of fruit weight (25.5 & 24.2%) and 100-seed weight (3.8 & 9.03%). | ||
| Keywords | ||
| Correlation; Genetic variability; Path analysis; Squash breeding; Yield components | ||
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