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...

The occurrence of the complete orotic acid pathway for the biosynthesis de novo of pyrimidine nucleotides was demonstrated in the intact cells of roots excised from summer squash (Cucurbita pepo L. cv. Early Prolific Straightneck). Evidence that the biosynthesis of pyrimidine nucleotides proceeds via the orotate pathway in C. pepo included: (a) demonstration of the incorporation of [(14)C]NaHCO...

The current study was conducted to evaluate the efficiency of entomopathogenic fungus Lecanicillium lecanii (1×106) spore per gram control Dacus ciliatus on summer squash cucurbita pepo in two different stations ( Tanjaro and Tainal ) Sulaymaniyah, Kurdistan Region-Iraq, greenhouses during July November, 2021, Set up a yellow sticky trap both sides from each greenhouse determine time appearance...