Accelerator mass spectrometry age determinations of maize cobs (Zea mays L.) from Guilá Naquitz Cave in Oaxaca, Mexico, produced dates of 5,400 carbon-14 years before the present (about 6,250 calendar years ago), making those cobs the oldest in the Americas. Macrofossils and phytoliths characteristic of wild and domesticated Zea fruits are absent from older strata from the site, although Zea po...

Interspecific hybridization among the three most economically important cultivated species of Cucurbita spp., Cucurbita pepo, C. moschata, and C. maxima can be made but not readily. By means of various pollination measures, different mating systems, and varying selection methods, nine advanced interspecific-bridge lines were developed, in which the crossing barrier among the species and the mal...

Introduction. The species and functional diversity of pollinators are important components for the reproduction cultivated plants. More information is necessary about this its geographical variation in crops such as Cucurbita pepo, one most global agriculture. Objective. To describe geographic community bees that visit C. pepo Costa Rica their foraging s
 Introduction: an crop Objective: t...

Introduction: Paraquat is a bipyridil herbicide commonly used in modern agriculture for weed and pest control. poisoning usually occurs through direct ingestion suicidal intent, causing mortality as consequence to oxidative damage, inflammation multi-organ failure.
 Objectives: In this study, we investigated the ameliorative potential of Cucurbita pepo fruit on paraqaut-induced inflammatio...