Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Willard L. Koukkari"'
Autor:
Beverly R. Durgan, Robert B. Sothern, Krishona B. Martinson, Willard L. Koukkari, Jeffrey L. Gunsolus
Publikováno v:
Chronobiology International. 19:405-422
Five field experiments were conducted in 1998 and 1999 in Minnesota to examine the influence of time of day efficacy of glyphosate [N-(phosphonomethyl)glycine] and glufosinate [2-amino-4-(hydroxymethyl-phosphinyl)butanoic acid] applications on the co
Publikováno v:
Journal of Plant Physiology. 151:575-580
Summary Effects of mechanical stress (or stimulus) on the length of Phaseolus vulgaris L. (cv. Kentucky Wonder pole bean) shoots displayed a 24 h rhythm, relative to the time of day that plants were subjected to stress. Shoots were shorter when subje
Publikováno v:
Journal of Plant Physiology. 151:352-357
Summary We focus here on a prominent subset of rhythms within the ultradian domain that have periods between 30 and 240 min as a candidate for a «biological hour.» Smooth histograms produced from reported periods obtained from two surveys of litera
Publikováno v:
Journal of Economic Entomology. 89:898-905
Probing behavior of adult potato leafhopper, Empoasca fabae (Harris), on alfalfa, Medicago sativa L., plants maintained at 3 water levels, was monitored using an AC electronic feeding monitor. Two waveform feeding types were predominant in occurrence
Autor:
Willard L. Koukkari, Sandra L. Orcutt, Tong Seung Tseng, Robert B. Sothern, Neil E. Olszewski
Publikováno v:
Chronobiology international. 19(6)
Several "clock" genes that regulate the circadian system in Arabidopsis thaliana have been identified. The GIGANTEA (GI) gene has been shown to participate in the circadian system that is linked to overt rhythms in gene expression, leaf movements, hy
Publikováno v:
Chronobiology international. 15(6)
Data published on the subjectively determined presence or absence of circadian periodicity in feeding of Brachycentrus occidentalis Banks, an aquatic insect belonging to the order Trichoptera, were reanalyzed by statistical methods based on the cosin
Publikováno v:
Chronobiology international. 15(1)
Circumnutation movements of shoot tips of two species of soybean were studied. Shoot tips of Glycine soja (Sieb. and Zucc.) moved in a counterclockwise direction with a mean period (+/- SD) of 108 +/- 9 minutes when the shoots were not handled prior
Autor:
Willard L. Koukkari, Robert B. Sothern
Introducing Biological Rhythms is a primer that serves to introduce individuals to the area of biological rhythms. It describes the major characteristics and discusses the implications and applications of these rhythms, while citing scientific result
Autor:
Willard L. Koukkari
Publikováno v:
Chronobiology international. 11(2)
An active learning exercise that focuses on movements (circum-nutations) of climbing bean plants (Phaseolus vulgaris L.; cv. Kentucky Wonder, pole bean) has been successfully incorporated into the curriculum of educational institutions to introduce t
Publikováno v:
Physiologia Plantarum. 51:309-313
Leaf movements in Abutilon theophrasti Medic, were monitored manually and by a continuous electronic recording device. Plants entrained to a daily regime of a 15 h light span followed by 9 h of darkness showed rhythmic movements that persisted under