+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Geographic variation in Quercus rubra in north central United States plantations

, : Geographic variation in Quercus rubra in north central United States plantations. Silvae Genetica 25(3/4): 118-122

Trees from 31 sources were grown in seven localities and the variation observed in 14-year-old trees was recorded. Time of flushing and of autumnal change in leaf colour appeared to be under strong genetic control and showed well-defined geographic variation. Trees from the north central region flushed the earliest, and early autumn leaf-colour change was associated with high latitude. Trees from regions subject to summer drought were the most drought resistant.


Other references

Stringaris, A., 2011: Abstract thinking: environmental modification, development, and psychopathology. Journal of the American Academy of Child and Adolescent Psychiatry 49(12): 1180-1180

Stainsby, W.N., 1966: Some critical oxygen tensions and their physiological significance. Several critical O2 tensions and a pseudocritical oxygen tension have been examined. Comparison of critical Po2 values among different species gives information about the ability of the different animals to transport and utilize O2. Comparison of...

Sawatzky P.; Olson D.G.; Dicaire A.; Hood Peter J., 1974: Experimental high-resolution aeromagnetic surveys; 1973. Paper - Geological Survey of Canada 74-1(74-1): 95-98

Burgess, D.L.; Kohrman, D.C.; Galt, J.; Plummer, N.W.; Jones, J.M.; Meisler, M.H., 1995: Sodium channel mutation in the mouse neurological mutant med. American Journal of Human Genetics 57(4 SUPPL ): A22

Clark J.D., 1967: The problem of Neolithic culture in sub-Saharan Africa. Pages 601-627 1967

Ritchie, AJ.; Peters, TM., 1981: The external morphology of Diplolepis rosae (Hymenoptera: Cynipidae, Cynipinae). The external morphology of Diplolepis rosae (L.), which causes galls on sweetbriar rose (Rosa eglantaria), is described. Variation in important taxonomic characters, the median suture and parapsidal sutures, and the presence of a submentum in the...

Onslow, M.; Stocker, S.; Packman, A.; McLeod, S., 2002: Speech timing in children after the Lidcombe Program of early stuttering intervention. It is known that operant treatments can control stuttering in children. However, at present it is unknown why such treatments are effective. Changes in the usual way of speaking are frequently observed after behavioural treatments for adults who s...

Delafosse, B.; Bouffard, Y.; Bertrand, O.; Viale, J.P.; Annat, G.; Motin, J., 1989: Effects of protein intake on pulmonary gas exchange and ventilatory drive in postoperative patients. The effects of different protein regimens on pulmonary gas exchange and ventilatory drive were examined in eight postoperative patients receiving inspiratory pressure support ventilation. They were studied during 60 consecutive hours, which includ...

Stamler, J.; Stamler, R., 1984: Intervention for the prevention and control of hypertension and atherosclerotic diseases: United States and international experience. Intervention to control hypertension and prevent coronary heart disease was initially undertaken in the United States in the late 1950s. It was conducted along three lines: randomized controlled trials, community demonstration projects, and broad...

Hoffmann, W.E., 1967: The regulation of uptake of individual minerals by the higher plant. Relatively little information is available on the regulation of the net uptake of individual nutrient elements by the actual requirements of the plant. Efflux from the root, guttation, leaching by rainfall and excretion by salt glands can have reg...