Genetic Behavior of Yield and Quality Traits in Sweet Melon Esmalawi Variety (Cucumis Melon –Var Agyptiacus)

Abstract

The highly polymorphic in sweet melon for many commercial traits providing seemingly endless possibilities for genetic improvement. The main objective of current study was to estimate of genetic behavior and obtain the genetic parameters of sweet melon advanced lines (Cucumis melo L. var. aegyptiacus). Eight inbred lines were developed from previous study using a pedigree selection method. The selected inbred lines were crossed according to factorial mating design generated 16 crosses. The additive genetic variance played an important role in the inheritance of yield and most yield component traits. Female variance (σ 2 f) appeared to be larger than male variance (σ 2 m) for the most quality traits except for taste. The magnitudes of additive genetic variance (σ 2 A) were lower than their non-additive including dominance (σ 2 D) for all studied yield traits, except for number of male flowers per plant and fruit length. The MAGD105, MAGD106 and MAGD107 are promising lines that could be used in farther improvement programs.

Evaluation of New Summer Squash Hybrids (Cucurbita pepo L.) Compare with some Commercial Cultivars

“…for days to female flower anthesis gave the best values (lowest values) over the all studied crosses for earliness fruits in the both seasons. These results are in confirmatory with those suggested by many workers found also significant differences among cucurbits regarding flowering and earliness traits among them, El-Gendy (1999), Ercan and Kurum (2003), Gabr (2003), Sadek (2003), Abdein (2005), Refai and Mohamed (2009), Ghobary and Ibrahim (2010), Moualla et al (2011), Shamloul and Askar (2011), Jahan et al (2012), Mohan et al (2012), El-Adl et al (2014), El-Gazzar et al (2015), Nada (2015), El-Shoura and Abed (2018) and Elias et al (2020).…”

“…Mohan et al (2012) showed that there were significant differences among the genotypes of squash and cucurbits in fruit characteristics. Similar results were reported by, El-Gendy (1999), Abd El-Hadi et al (2001), El-Lithy (2002), Ercan and Kurum (2003), Gabr (2003), Sadek (2003), Abdein (2005), Refai et al (2009), Ghobary and Ibrahim (2010), Shamloul and Askar (2011), Jahan et al (2012), Omran (2012), El-Gazzar et al (2015), Habiba et al (2015), Nada (2015) and Elias et al (2020). *,** Significant and highly significant at 0.05 and 0.01 levels of probability, respectively.…”

“…At the same time, it could be confirmed that the most crosses for all studied yield and its component traits gave the better mean values over the commercial cultivars resulted in the hybrid vigor that caused by the maximum values for new lines comprised in these crosses in the both seasons. Many investigators, El-Gendy (1999), Abd El-Hadi et al (2001), El-Lithy (2002), Gabr (2003), Sadek (2003), Abdein (2005), Feyzian et al (2009), Refai and Mohamed (2009), Ghobary and Ibrahim (2010), Moualla et al (2011), Shamloul and Askar (2011), Jahan et al (2012), Mohan et al (2012), Omran et al (2012), El-Gazzar et al (2015), Habiba et al (2015), Nada (2015), El-Shoura and Abed (2018) and Elias et al (2020) found highly significant differences among squash genotypes for these traits.…”

EVALUATION OF NEW INBRED LINES AND THEIR HYBRIDS IN BALADY SQUASH VARIETY (Cucurbita pepo L.)

“…In addition it had the best value for sex ratio (1.82) which mean expected high number of fruits and yield per plant. Many workers found also significant differences among squash regarding flowering and earliness traits among them, El-Gendy (1999), Ercan and Kurum (2003), Gabr (2003), Sadek (2003), Abdein (2005), Refai and Mohamed (2009), Ghobary and Ibrahim (2010), Moualla et al (2011), Shamloul and Askar (2011), Mohan et al (2012), Jahan et al (2012), El-Adl et al (2014).…”

“…As well as, the values of crosses ranged from 15.68 (P 1 xP 3 ) to 20.16 mg/100g (P 2 xP 3 , P 3 xP 1 ) for ascorbic acid content, 4.19 (P 2 xP 3 ) to 5.95% (P 1 xP 2 ) for total soluble solids, 5.79 (P 2 xP 3 ) to 7.00 % (P 1 xP 2 ) for dry weight of fruit, 11.40 (P 1 xP 2 ) to 13.00 (P 3 xP 2 ) for fruit number per plant and 1.12 (P 1 xP 2 ) to 1.32 kg (P 3 xP 2 ) for fruit yield per plant. Many investigators, El-Gazzar (1981), El-Gendy (1999), Abd El-Hadi et al (2001), El-Lithy (2002), Gabr (2003), Sadek (2003), Abdein (2005), Refai and Mohamed (2009), Ghobary and Ibrahim (2010), Shamloul and Askar (2011), Moualla et al (2011), Feyzian et al (2009), Omran et al (2012), Jahan et al (2012) and Mohan et al (2012) found highly significant differences among squash genotypes for these traits.…”