Keys for and morphological character variation in some Egyptian cultivars of Cucurbitaceae

Abstract

The cultivated varieties and landraces of Cucurbitaceae growing in Egypt are presented, 27 taxa, belonging to three genera, six species, and five subspecies. These characters are arranged according to their usefulness for identifications as follow: fruit characters, seed characters and trichome type. Fruit characters are a good taxonomic tool at varietal level when combined with the other vegetative characters. Two keys to 27 cultivated varieties of Cucurbitaceae (Cucumis, Cucurbita and Luffa) were constructed using the DELTA software system. One key is used for identification, and then the other is used as a confirmatory key. Those keys were built using 36 morphological characters include vegetative, floral, fruit and seed characters. There is a significant correlation between seed size and growth parameters. The growth parameters of the studied taxa included leaf length/ size, petiole length and corolla length. There is a highly positive, significant correlation between seed volume and leaf size (r = 0.81831, P B 0.001), seed volume and petiole length (r = 0.79112, P B 0.001), seed volume and leaf length (r = 0.83566, P B 0.001), and seed volume and corolla length (r = 0.59108, P B 0.001).

Genetic Linkage Map Construction and QTL Analysis of Two Interspecific Reproductive Isolation Traits in Sponge Gourd

“…Sponge gourd (2n = 26), also called luffa, is a cross-pollinated diploid species from the cucurbitaceous family, which is mainly cultivated in tropical and subtropical regions, such as China, Malaysia, India, Thailand, Central America, and Africa (Oboh and Aluyor, 2009 ; Rabei et al, 2013 ; Wu et al, 2014 ). Nine varied species of sponge gourd are distributed around the world, of which only Luffa acutangula (L.) Roxb.…”

“…and L.cylindrica (L.) Roem. are cultivated (Prakash et al, 2013 ; Rabei et al, 2013 ; Wu et al, 2014 ). They obviously differ from each other in that L. acutangula fruit possesses deep grooves and thus is also called ridged luffa, while the surface of L. cylindrica is smooth, due to which it is also called smooth luffa.…”

Phenotypic Diversity of Eragrostis Wolf in Egypt

“…The data are converted using the TOKEY directives file using Confor. The KEY program is used to generate the key (see Rabei & El-Gazzar 2007;Coleman et al 2010;Rabei 2011;Rabei & Abdel Khalik 2012;Rabei et al 2013).…”

De novo assemblies of Luffa acutangula and Luffa cylindrica genomes reveal an expansion associated with substantial accumulation of transposable elements

“…are prevalent in the subtropical regions of Asia, and it is believed to have an Asian origin (Heiser & Schilling, 1988; Heiser, Schilling, & Dutt, 1988). Both L. acutangula and L. cylindrica are widely cultivated in India, China, Thailand, Central America and Africa (Oboh & Aluyor, 2009; Rabei, Rizk, & Khedr, 2013; Wu et al., 2014). Immature Luffa fruits serve as nutrient‐rich vegetables that are abundant in bioactive compounds beneficial to human health such as glycosides, alkaloids, flavonoids and sterols (Partap, Kumar, Sharma, & Jha, 2012).…”