Characterization of watermelon local cultivars from Southern Tunisia using morphological traits and molecular markers

Elbekkay, Mokhtar; Hamza, Hammadi; Neily, Mohamed Hichem; Djébali, Naceur; Ferchichi, Ali

doi:10.1007/s10681-021-02809-9

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…However, among fruit trees, the date palm stands out with the most extensive varietal profile, encompassing 50 varieties. This high richness surpasses the findings in Tunisian coastal oases, which host approximately 40 varieties [75,92], as well as the Siwa oasis in Egypt, where 52 varieties have been recorded [93]. However, it is important to note that this varietal richness is primarily dominated by khelt or hybrid varieties resulting from seedlings [25].…”

Section: Agrodiversity and Genetic Resourcesmentioning

confidence: 71%

“…In comparison to other oases in North Africa, the southern Morocco region exhibits relatively higher crop richness. For instance, the Nafzaoua oases in Tunisia cultivate 27 crops [10], the Gafsa oasis in Tunisia cultivates 25 crops [9], the Chenini oasis in Tunisia cultivates 30 crops [75], the Oued Righ Oasis in Algeria cultivates 21 crops [11], Egypt cultivates 52 crops [57], and the Ghät Oasis in Libya cultivates 58 crops [54]. Hammer et al [55] conducted an extensive inventory of crops across various Libyan oases, including Ghät, Fezzan, Ghadamès, Mourzouk, and Oubari, identifying a total of 278 crops.…”

Section: Polyculture and Agrodiversitymentioning

confidence: 99%

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Evaluation and Structuring of Agrodiversity in Oases Agroecosystems of Southern Morocco

Houssni

Kassout²,

Mahroussi

et al. 2023

Agriculture

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Oases play a crucial role in human societies and the conservation of biodiversity, especially in harsh environments like arid zones. They serve as sanctuaries for agrodiversity, preserving diverse agricultural resources under challenging climatic conditions. However, these agroecosystems are becoming increasingly vulnerable to climate fluctuations, droughts, and other environmental changes. Understanding these unique agroecosystems is essential for developing effective strategies to protect them. Agrodiversity serves as a key indicator of the overall health of traditional agroecosystems. To assess the richness and diversity of agrodiversity, field surveys were conducted in six representative oases in southern Morocco. Within each oasis, we interviewed 20 farmers in five ksour. Our findings confirm the widespread practice of polyculture and reveal significant diversity among the oases. A total of 55 crops were identified, consisting of 183 varieties. Specifically, the oasis of Tata employed 42 crops, Alnif had 41 crops, Guelmim had 38 crops, Aoufouss had 32 crops, Rich had 29 crops, and Zagora had 28 crops. The profiles of varieties clearly distinguish between ksour and oases, highlighting the unique identities of each oasis. The modernization of farming practices is influenced by factors such as farm size, plot fragmentation, dispersal, and irrigation methods. However, its consequences are concerning. There is a risk of losing agrodiversity and compromising the food security of local populations. The shift from household consumption crops to cash crops has negative implications for the availability of diverse and nutritious food. Moreover, modernization often leads to increased water consumption, further straining the already limited water resources in these oases.

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Section: Agrodiversity and Genetic Resourcesmentioning

confidence: 71%

Section: Polyculture and Agrodiversitymentioning

confidence: 99%

Evaluation and Structuring of Agrodiversity in Oases Agroecosystems of Southern Morocco

Houssni

Kassout²,

Mahroussi

et al. 2023

Agriculture

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“…Morphological diversity analysis in sweet watermelon revealed extensive variation in quantitative phenotypic traits, including plant architecture, flowering time and rates, fruit and seed yield, and fruit-and seed-related traits [41,[77][78][79]. The section below outlines the genetic analysis of various quantitative traits.…”

Section: Genetic Regulation Of Quantitative Traits In Sweet Watermelonmentioning

confidence: 99%

Retrospective Genetic Analysis of Qualitative and Quantitative Traits in Sweet Watermelon (Citrullus lanatus var. lanatus): A Review

et al. 2022

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Understanding the genetic basis of a crop’s qualitative and quantitative traits is vital to designing market preferred varieties. The aim of this review is to present a retrospective genetic analysis of qualitative and quantitative phenotypic traits in sweet watermelon as a guide for trait integration and the development of novel varieties with yield potential and desirable horticultural attributes. The first section outlines genes conditioning the inheritance of plant architecture (e.g., leaf attributes and plant architecture), floral characters (flowering rate, sex expression, and male sterility), fruit traits (shape, colour, rind colour and stripe patterns and flesh colour) and seed morphology (seed length, width, size and coat colour). In the second section, developments in molecular markers and quantitative trait loci (QTL) to aid marker-assisted breeding are discussed. Further, the review highlights the clustered regularly interspaced short palindromic repeats (CRISPR/Cas9) gene-editing technology and its scope in gene manipulations and new variety development. The information presented in this review is useful for optimised and demand-led breeding to develop new varieties to serve growers, consumers and the sweet watermelon industry.

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“…The diversity of Tunisian onion germplasm has scarcely been explored, and only a few studies have been reported regarding the biochemical characterization of some onion landraces [20]. The importance of Tunisian genetic resources as a valuable genetic reservoir was demonstrated in several crops [21][22][23][24][25]. Therefore, both the conservation and characterization of these materials are challenges to maintaining and protecting biodiversity.…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity Analysis of Onion (Allium cepa L.) from the Arid Region of Tunisia Using Phenotypic Traits and SSR Markers

Chalbi,

Chikh-Rouhou,

Mezghani

et al. 2023

Horticulturae

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The present study was carried out to evaluate and characterize, for the first time, the genetic potential of a collection of onion (Allium cepa L.) local accessions from the arid region of southern Tunisia. The genetic diversity among 135 onion individuals, belonging to 23 accessions, was evaluated using microsatellite (SSR) markers and phenotypic information. A total of 35 alleles were generated with 11 SSRs. The polymorphic information content (PIC) value ranged from 0.08 to 0.95, with an average PIC of 0.43. The expected heterozygosity averaged 0.37, and the observed heterozygosity averaged 0.42. The analysis of molecular variance (AMOVA) revealed that 79% of genetic variation existed within individuals. Structure and cluster analysis grouped the accessions into two major clusters: landraces and pre-breeding lines. For the phenotypic traits evaluated, field trials were conducted in two different environments. Significant differences among accessions were shown, and for most traits, there was also a significant environmental effect and a significant interaction between environment and accession. Great variability was found for all the traits that could be exploited to create new varieties of onion adapted to local conditions by selecting appropriate parents in hybridization breeding.

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Characterization of watermelon local cultivars from Southern Tunisia using morphological traits and molecular markers

Cited by 6 publications

References 22 publications

Evaluation and Structuring of Agrodiversity in Oases Agroecosystems of Southern Morocco

Evaluation and Structuring of Agrodiversity in Oases Agroecosystems of Southern Morocco

Retrospective Genetic Analysis of Qualitative and Quantitative Traits in Sweet Watermelon (Citrullus lanatus var. lanatus): A Review

Genetic Diversity Analysis of Onion (Allium cepa L.) from the Arid Region of Tunisia Using Phenotypic Traits and SSR Markers

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