Robert R. Krueger

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Citrus tristeza virus (CTV) isolates collected from citrus germplasm, dooryard and field trees in California from 1914 have been maintained in planta under quarantine in the Citrus Clonal Protection Program (CCPP), Riverside, California. This collection, therefore, represents populations of CTV isolates obtained over time and space in California. To(More)
Date palms (Phoenix dactylifera) are the most significant perennial crop in arid regions of the Middle East and North Africa. Here, we present a comprehensive catalogue of approximately seven million single nucleotide polymorphisms in date palms based on whole genome re-sequencing of a collection of 62 cultivars. Population structure analysis indicates a(More)
The date palm (Phoenix dactylifera L.) is one of the oldest cultivated trees and is intimately tied to the history of human civilization. There are hundreds of commercial cultivars with distinct fruit shapes, colors, and sizes growing mainly in arid lands from the west of North Africa to India. The origin of date palm domestication is still uncertain, and(More)
  • Mohammed R Alhassan, Andrew W Brown, Brian E Franklin, Kyle E Warren, Nicola Bray, Joel J Brattin +1 other
  • 2010
This report represents work of WPI Undergraduate Students submitted to the faculty as evidence of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review. For more information about the projects program at WPI, see Abstract The National Railway Museum (NRM) in York, U.K. is applying for funds in order to(More)
The spring-fed mission oases of the Baja California peninsula, Mexico, hold several species, varieties and unique hybrids of heritage citrus, which may represent valuable genetic resources. Citrus species first arrived to the peninsula with the Jesuit missionaries (1697-1768), and new varieties were introduced during the colonial and rancho periods(More)
America’s date palm (Phoenix dactylifera L.) groves can be found from 36°N Lat. (USA) to 21°S Lat. (Chile) and from 63°W Long. (Venezuela) to 117°W Long. (USA), at elevations from sea level to 2,000 m (Colombia). However, successful production of ripe dates is possible only in the arid regions of Peru, Chile, Baja California (Mexico) and the southwestern(More)
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