Cucurbita maxima Duchesne Cucurbita moschata Duchesne Cucurbitaceae (original) (raw)
Italian Journal of Agronomy ,13:963, 2018
Identifying crop genetic resources represent an important aspect of agricultural biodiversity conservation. However, conservation of landraces is challenging because they often cannot be properly identified, or have already suffered from genetic erosion, or have disappeared. Identification of landraces can be obtained using molecular markers or discriminating qualitative and quantitative morphological traits. The latter methodology is cheap and easily achievable, allowing the registration of landraces in national catalogues. In this study, we carried out a morphological char-acterisation of different accessions of Cucurbita maxima (Cucurbitaceae) cultivated in the Po Valley (N-Italy), locally known as Cappello da prete. The aim was to explore the morphological fruit variability among accessions and to identify potential distinct landraces within the Cappello da prete squash group. Differences between accessions were found indicating that morphological traits can be effectively used to identify these landraces and suggesting a diversification by isolation. Indeed, our morphological analysis shown the existence of two different landraces of Cappello da prete squashes. The adopted procedure can demonstrate that few low-cost traits are useful for the registration of local varieties in the official catalogue of landraces. Our study also demonstrates that morphological characterisation allows a rapid and cost-effective identification of diagnostic morphological traits that, together with historical and cultural information, are fundamental to recognise landraces.
An outline of the family Cucurbitariaceae
Sydowia -Horn-
The Cucurbitariaceae is a relatively poorly known family of Dothideomycetes. Cucurbitaria berberidis, the type species of Cucurbitaria, was collected on dead twigs of Berberis vulgaris in Austria and this new collection is used to epitypify the taxon and described and illustrated in detail with regard to its sexual and asexual state. Sequence data from 18S nrDNA (SSU) and 28S nrDNA (LSU) gene regions of several isolates of the epitype or iso-epitype specimens were compared with representative isolates of C. berberidis and closely related sequences in GenBank. The phylogenetic results show that Cucurbitariaceae is a well-resolved family within Pleosporineae. A Pyrenochaeta-like coelomycetous asexual state formed in the Cucurbitaria culture, and is illustrated here. The types of Curreya, Rhytidiella and Syncarpella are also studied and illustrated. Taxonomic placements of each genus with their asexual states are discussed. We provisionally accept six genera in Cucurbitariaceae i.e. Cu...
CUCURBITACEAE OF WEST BENGAL -A CENCUS
Abstract Since time immemorial human beings were entirely depend on the vegetable world to meet up their day to day needs. There are some angiospermic families which are in the top of the list on the basis of their utility as vegetables to man. Cucurbitaceae is such an angiospermic family which is very important to us, as it meets up needs of vegetables and some important medicines necessary for the health care. Prain had long been enumerated the available cucurbits of the then Bengal province of the British dynasty. That list was not a complete list of the Cucurbitaceae in every respect, but unfortunately after 107 years of the publication of the "Bengal Plants", still the list of the plants of West Bengal is wanted. To meet up this lacuna, a small attempt has been taken up to enumerate the cucurbits of the present day West Bengal, along with their economic utility. It has been observed that at present Cucurbitaceae has 46 species, 1 subspecies and 3 varieties distributed under 29 genera in West Bengal. These taxa of cucurbits are used in various ways as like food, medicine and for other means mainly as vegetables. Key words: Cucurbitaceae, West Bengal, Cencus.
Cucurbitaceae - The Family That Nourishes And Heals
2018
A review of the activities of members of the Cucurbitaceae was carried out. Many of them are confirmed nutritious and therapeutical. Their global spread, diverse genera and phytochemical profile further confirm them as an attraction for the growth and survival of humanity. The need for alternative control measures to address resistance has heightened the passion for Cucurbitaceae in bioprospecting.
Anatomical Diversity among Certain Genera of Family Cucurbitaceae
The anatomical characters of the Cucrbitaceae having long attracted the attention of botanists. In order to understand the evolution of anatomical diversity, anatomical features of five genera in the family Cucurbitaceae, (Colocynthis, Cucumis, Cucurbita, Citrullus, and Luffa) were investigated. Similarities in the distribution, tissue differentiation and number of layers of cells and tissues in the root, stem and leaf transverse sections were similar in all genera. However, there were variations in the vascular bundles in the roots where they were bicollateral in Cucumis sativus and Luffa aegyptiaca, while it consisted of four radial arms of primary xylem alternating with four arms of primary phloem in the other species. The Trichomes were multicellular, glandular and non-glandular types with a preponderance of non-glandular types with various shapes. The variation in number of tiers within these trichomes was taxonomically significance.
The value of morpho-anatomical features in the systematics of Cucurbita L
African Journal of Biotechnology, 2004
Comparative studies on the morphology and anatomy of the three species of Cucurbita L. (C. moschata, C. maxima and C. pepo) in Nigeria were carried out. The morphological features of significance include variations in the number of tendrils, fruit size, shape, nature of fruit stalk, leaf shape and flower colour. Seed-coat anatomy revealed four distinct zones, which varied in thickness and tissue layers. Similarities were observed in the distribution, differentiation and number of layers of cells and tissues in the leaf, petiole and stem sections. There were, however, variations in number of bicollateral vascular bundles in their petiole. While the number is 10 in C. moschata, 14 in C. pepo, it is 16 in C. maxima. Parietal placentation and 15 anther-lobes are reported for these species for the first time. The usefulness of these parameters in the taxonomic delimitation of these species is discussed.
Genetics and Genomics of Cucurbitaceae
Plant genetics and genomics: crops and models, 2017
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