| host status of grapefruit and valencia oranges for anastrepha serpentina and anastrepha ludens (diptera: tephritidae). | anastrepha serpentina (wiedemann) (diptera: tephritidae) is sporadically captured in the rio grande valley of texas. although its preferred hosts are in the sapotaceae family, several varieties of citrus, including grapefruit and oranges are listed as alternate hosts. although mexican fruit fly, anastrepha ludens (loew), is known to be a major pest of citrus, doubt exists as to the status of citrus as a breeding host for a. serpentina. to evaluate the host status of commercial citrus for a. serp ... | 2011 | 21510184 |
| distribution of 'candidatus liberibacter asiaticus' above and below ground in texas citrus. | detection of 'candidatus liberibacter asiaticus' represents one of the most difficult, yet critical, steps of controlling huanglongbing disease. efficient detection relies on understanding the underlying distribution of bacteria within trees. to that end, we studied the distribution of 'ca. l. asiaticus' in leaves of 'rio red' grapefruit trees and in roots of 'valencia' sweet orange trees grafted onto sour orange rootstock. we performed two sets of leaf collection on grapefruit trees; the first ... | 2016 | 27050571 |
| citrus leprosis and its status in florida and texas: past and present. | according to published reports from 1906 to 1968, leprosis nearly destroyed the florida citrus industry prior to 1925. this was supported with photographs showing typical leprosis symptoms on citrus leaves, fruit, and twigs. support for the past occurrence of citrus leprosis in florida includes: (1) presence of twig lesions in affected orange blocks in addition to lesions on fruits and leaves and corresponding absence of similar lesions on grapefruit; (2) yield reduction and die-back on infected ... | 2003 | 14756416 |