*Antenne ORSTOM, Laboratoire d’Ichtyologie Générale et Appliquée, Muséum National d’Histoire Naturelle, 43 rue Cuvier, 75231 Paris, France; †Institute of Animal Physiology and Genetics, Department of Genetics, Laboratory of Fish Genetics, Academy of Sciences of Czech Republic, 277 21 Libechov, Czech Republic and ‡C.S.I.C., Museo Nacional de Ciencias Naturales, J. Gutiérrez Abascal 2, 28006 Madr...

Sweetpotato is one of the most important food crop species in the world, with more than 104,000,000 tons produced each year, and the breeding of superior cultivars with agronomically important traits, such as improved disease resistance, yield, and nutrient richness, is necessary, especially in developing countries. However, as a result of the crop's complex genomic architecture, which results ...

Cucurbitaceae plants are of considerable biological and economic importance, and genomes of cucumber, watermelon, and melon have been sequenced. However, a comparative genomics exploration of their genome structures and evolution has not been available. Here, we aimed at performing a hierarchical inference of genomic homology resulted from recursive paleopolyploidizations. Unexpectedly, we foun...

The phylogenetic position of hexaploid Elymus repens within the tribe Triticeae (Poaceae) was examined using cloned sequences from the low-copy nuclear genes encoding phosphoenolpyruvate carboxylase (pepC) and beta-amylase. A previous analysis of E. repens using data from the nuclear granule-bound starch synthase I (GBSSI) gene had yielded five phylogenetically distinct gene copies, two more th...

Polyploidy is common and an important evolutionary factor in most land plant lineages, but it is rare in gymnosperms. Coast redwood (Sequoia sempervirens) is one of just two polyploid conifer species and the only hexaploid. Evidence from fossil guard cell size suggests that polyploidy in Sequoia dates to the Eocene. Numerous hypotheses about the mechanism of polyploidy and parental genome donor...

The goldenberry, Physalis peruviana L., is an important fruit in Colombia due to its export value and nutritional quality. However, commercial crops face challenges of heterogeneity the presence diseases that reduce yield These drawbacks could be handled through different breeding methods develop uniform cultivars, for example, anther culture, which used rapidly produce homozygous lines. ploidy...

Abstract It is not known when the polyploid coast redwood ( Sequoia sempervirens ) evolved from its diploid ancestors, and what type of polyploidy. Whether close relatives , giant sequoia Sequoiadendron giganteum dawn Metasequoia glyptostroboides ), have possibly contributed to ancestry hexaploid remains an open question. The nature hexaploidy in has baffled biologists for more than a century. ...