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Palaeocarpinus dakotensis Manchester, Pigg, et Crane sp.n. (Coryloideae, Betulaceae) is described from the Late Paleocene Almont and Beicegel Creek floras of North Dakota based on infructescences with associated staminate catkins, pollen, and leaves. The well-preserved, silica-permineralized specimens provide both anatomical and morphological data for this widely distributed genus of the Northe...
PREMISE OF THE STUDY Triassic and Jurassic fossils record structural changes in conifer seed cones through time, provide the earliest evidence for crown-group conifer clades, and further clarify sister-group relationships of modern conifer families. A new and distinct seed-cone from the Isle of Skye in western Scotland provides the oldest detailed evidence for the ancestral morphology of the ph...
Background: To investigate the feasibility of single reshaped Judkins left catheter for transradial coronary angiography. Methods: A total of 198 consecutive patients were enrolled in the first step study. Patients were randomly assigned to brachial type catheter group (BRACT group) or Judkins left catheter group (Judkins group). The inclusion criterion was the left coronary angiography which c...
In order to evaluate of distinctness, uniformity and stability (DUS) of morphological traits, three new genotypes of cotton (GT40, TBL60 and SKT134) were tested using a complete randomized blocks design with 4 replications. In general, 39 quantitative and qualitative morphological characteristics were measured. Results showed quantitative morphological characteristics including number of stem n...
The completion of flower development in Impatiens balsamina requires continuous inductive (short-day) conditions. We have previously shown that a leaf-derived signal has a role in floral maintenance. The research described here analyzes the role of the leaf in flower development. Leaf removal treatments, in which plants were restricted to a specified number of leaves, resulted in flowers with i...
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