Journal ArticleDOI
Parallel Evolution Under Domestication and Phenotypic Differentiation of the Cultivated Subspecies of Cucurbita pepo (Cucurbitaceae)
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Among the evolutionary developments common to the two subspecies are the increased size of the plant parts, less plant branching, and premature loss of chlorophyll in the exocarp of the fruits.Abstract:
Parallel Evolution under Domestication and Phenotypic Differentiation of the Cultivated Subspecies ofCucurbita pepo(Cucurbitaceae). Cucurbita pepo (pumpkin, squash, gourd, Cucurbitaceae) is an ancient North American domesticate of considerable economic importance. Based on molecular genetic polymorphisms, two cultivated lineages of this species, each consisting of very many edible–fruited cultigens, have been recognized, C. pepo subsp. pepo and C. pepo subsp. texana. However, the phenotypic commonalities and differences between these two subspecies have not as yet been systematically collected and organized. Among the evolutionary developments common to the two subspecies are the increased size of the plant parts, less plant branching, and premature loss of chlorophyll in the exocarp of the fruits. In both subspecies, bush growth habit, conferred by allele Bu, is common to the cultigens grown for consumption of the immature fruits, as is the deviation from the 1:1 ratio of fruit length to fruit width. A major characteristic differentiating between the edible–fruited cultigens of the respective subspecies are the longitudinal protrusions, in subsp. pepo, versus depressions, in subsp. texana, of the fruit surface corresponding with the subsurface primary carpellary vein tracts. Subsp. pepo also has larger fruits and larger and longer seeds. In addition, some alleles affecting stem color, leaf mottling, multiple flower bud production, and fruit characteristics are frequently occurring to nearly fixed in one subspecies but are rare to less common in the other.read more
Citations
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Journal ArticleDOI
De novo assembly of the zucchini genome reveals a whole-genome duplication associated with the origin of the Cucurbita genus.
Javier Montero-Pau,José Blanca,Aureliano Bombarely,Peio Ziarsolo,Cristina Esteras,Carlos Martí-Gómez,María Ferriol,Pedro Gómez,Manuel Jamilena,Lukas A Mueller,Belén Picó,Joaquín Cañizares +11 more
TL;DR: A high‐quality draft of the zucchini genome is presented, and three independent lines of evidence support that the C. pepo genome is the result of a whole‐genome duplication: the topology of the gene family phylogenies, the karyotype organization and the distribution of 4DTv distances.
Journal ArticleDOI
Origin and domestication of Cucurbitaceae crops: insights from phylogenies, genomics and archaeology
TL;DR: Insights on cucurbit domestication from new phylogenies, archaeology, and genomic studies are reviewed, suggesting that an annual life cycle may have contributed to domestication.
Journal ArticleDOI
Cell number regulator genes in Prunus provide candidate genes for the control of fruit size in sweet and sour cherry
P. De Franceschi,Travis Stegmeir,Antonio Cabrera,E. van der Knaap,Umesh R. Rosyara,Audrey Sebolt,Luca Dondini,Elisabeth Dirlewanger,Elisabeth Dirlewanger,José Quero-Garcia,José Quero-Garcia,José Antonio Campoy,José Antonio Campoy,Amy Iezzoni +13 more
TL;DR: The finding that the increase in fleshy fruit size in both tomato and cherry associated with domestication may be due to changes in members of a common ancestral gene family supports the notion that similar phenotypic changes exhibited by independently domesticated taxa may have a common genetic basis.
Journal ArticleDOI
Germplasm enhancement of Cucurbita pepo (pumpkin, squash, gourd: Cucurbitaceae): progress and challenges
TL;DR: Fruit quality and flavor enhancements of pumpkins and squash have been and are being accomplished largely by the consumer-oriented breeders at research and academic institutions, however, lack of support for these breeding programs is jeopardizing the continued consumer- oriented fruit-quality enhancement of C. pepo germplasm.
Posted ContentDOI
De-novo assembly of zucchini genome reveals a whole genome duplication associated with the origin of the Cucurbita genus
Javier Montero-Pau,José Blanca,Aureliano Bombarely,Peio Ziarsolo,Cristina Esteras,Carlos Martí-Gómez,María Ferriol,Pedro Gómez,Manuel Jamilena,Lukas A Mueller,Belén Picó,Joaquín Cañizares +11 more
TL;DR: A high-quality draft of the zucchini genome is presented and three independent evidences support that the C. pepo genome is the result of a Whole Genome Duplication: the topology of the gene family phylogenies, the karyotype organization, and the distribution of 4DTv distances.
References
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Journal ArticleDOI
Genetic diversity of a germplasm collection of Cucurbita pepo using SRAP and AFLP markers.
TL;DR: In this paper, a collection of 69 accessions representative of the morphotypes and some unclassified types was used for analysing the morphological and molecular diversity of Cucurbita pepo.
Journal ArticleDOI
The Initial Domestication of Cucurbita pepo in the Americas 10,000 Years Ago
TL;DR: Nine accelerator mass spectrometer radiocarbon dates on specimens document the cultivation of C. pepo by the inhabitants of Guila Naquitz cave between 10,000 to 8000 calendar years ago (9000 to 7000 carbon-14 years before the present), which predates maize, beans, and other directly dated domesticates in the Americas by more than 4000 years.
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Phylogenetic relationships among domesticated and wild species of Cucurbita (Cucurbitaceae) inferred from a mitochondrial gene: Implications for crop plant evolution and areas of origin
TL;DR: This study represents one of the first successful uses of a mtDNA gene in resolving inter- and intraspecific taxonomic relationships in Angiosperms and yields several important insights into the origins of domesticated Cucurbita.
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Neglected crops: 1492 from a different perspective.
TL;DR: Neglected crops: 1492 from a different perspective , Neglected crops :1492 from an different perspective,