Now showing items 1-10 of 11
Cell elongation in the grass pulvinus in response to geotropic stimulation and auxin application
(Springer-Verlag, 1976-01)
Horizontally-placed segments of Avena sativa L. shoots show a negative geotropic response after a period of 30 min. This response is based on cell elongation on the lower side of the leaf-sheath base (pulvinus). Triticum ...
Current status of the Progymnospermopsida
(Elsevier, 1976-01)
The three progymnosperm orders, Aneurophytales, Protopityales, and Archaeopteridales, are characterized and analyzed. The possibility that some of the apparent taxonomic diversity of the Aneurophytales and Archaeopteridales ...
Development of a photosynthesis model with an emphasis on ecological applications
(Springer-Verlag, 1976-06)
In this paper, a description of photosynthesis in a single leaf is developed that separates physiological sub-processes and that is practical to apply as an ecological tool. Temperature dependencies are emphasized with the ...
Changes in serum proteins associated with metamorphosis in salamanders of the family ambystomatidae
(Elsevier, 1976)
1. 1. The effect of metamorphosis on the serum proteins of three genera and five species of ambystomatid salamanders was examined by electrophoresis.2. 2. Four of the five species showed a significant increase in the fastest ...
Development of a photosynthesis model with an emphasis on ecological applications
(Springer-Verlag, 1976-06)
Photosynthesis was measured in leaves of Phaseolus vulgaris and analyzed according to the set of equations outlined previously by Tenhunen et al. (1976).
A mathematical foundation for the analysis of cladistic character compatibility
(Elsevier, 1976)
Using formal algebraic definitions of "cladistic character" and "character compatibility", the concept of "binary factors of a cladistic character" is formalized and used to describe and justify an algorithm for checking ...
Phylogenetic relationships in the lizard family Pygopodidae: an evaluation of theory, methods and data
(University of Michigan Museum of Zoology, 1976)
An algebraic analysis of cladistic characters
(Elsevier, 1976-10)
Cladistic characters are used by many numerical axonomists in the estimation of evolutionary history. We make use of semilattice theory to give an algebraic formulation of the ideas involved in this process and to give ...
Seasonal acclimatization to temperature in cardueline finches
(Springer-Verlag, 1976-01)
1. Seasonal variation in metabolism and insulation was measured throughout the year in American goldfinches ( Spinus tristis ) and during winter in pine siskins ( S. pinus ).
Partial Skull of the Plesiadapiform Primate Ignacius from the Early Eocene of Wyoming
(Museum of Paleontology, The University of Michigan, 1976)