the peak spring and autumn production periods for coolseason forages in the eastern Great Plains (Mitchell et Two big bluestem (Andropogon gerardii Vitman) strains (Pawnee al., 1994; Moser and Vogel, 1995). Krueger and Curtis C3 and Kaw C3) developed by three breeding cycles for increased forage yield and in vitro dry matter digestibility (IVDMD) were com(1979) in South Dakota reported monocult...

S the advent of methodologies to analyze the content of whole genomes (e.g., renaturation kinetics and Cot analysis), it has been known that a large fraction of eukaryotic genomes is highly repetitive (1, 2). Recent computer-assisted analysis of several sequenced eukaryotic genomes, including Caenorhabditis elegans, Drosophila melanogaster, Arabidopsis thaliana, and humans, has demonstrated tha...

L ife as we know it is the result of symbiosis. Mitochondria, the energy generators of our own bodies, are the end result of the symbiosis of a bacterium with a host eukaryote. Visible around us are the land plants that we eat to fuel our mitochondria. Land plants are the beneficiaries of a second symbiosis, that of a cyanobacterium with a mitochondriate host, a relationship that subsequently d...

PHYSIOLOGISTS OF MANY GENERATIONS have employed tractable model systems to make observations and then have extrapolated those observations to other more complex or less amenable systems. Such an approach is built on initial obvious similarities of the systems in form or function. The success of this philosophical approach has been mixed. Depending on the tissue, species, and especially dependin...

Genetic data are an essential prerequisite for analysing the genetic structure of tree populations. The isozyme technique is the best currently available method for obtaining such data. Despite several shortcomings, isozyme data directly evaluate the genetic resources of forest trees, and can thus be used to monitor and manipulate these resources. For example, preliminary isozyme data indicate ...

ed =312141; ARMIN FALK ET AL., INFORMAL SANCTIONS 31-32 (U. of Zurich, Inst. for Empirical Research in Econ., Working Paper No. 59, 2000), http://papers.ssrn.com/sol3/ delivery.cfm/SSRN_ID245568_code001011130.pdf?abstractid=245568 (testing for reciprocal behavior in Internet and classroom laboratory experiments and concluding that reciprocity decreases with increased social distance but is not ...

This study was conducted to evaluate the growth, visual quality, and stress response of 17 species of bedding plants andKentucky bluegrass (Poa pratensisL.) grown outdoors for 10 weeks during the summer of 2003 at three locations in Colorado. Plants were irrigated at 100% of the reference evapotranspiration (ET0) (amount required to maintain Kentucky bluegrass in an optimum condition) for 2 wee...

Many recent studies of polygynous ants have focused on producing an ecological and reproductive cost-benefit analysis of polygynous systems in order to shed light on how or why it developed over the more common practice of monogyny. Polygyny, the practice of keeping multiple reproductive queens in one colony, has evolved in many ant species, some of which display both polygynous and monogynous ...

Understanding the complex mechanisms controlling treeline advance or retreat in the arctic and subarctic has important implications for projecting ecosystem response to changes in climate. Changes in landcover due to a treeline biome shift would alter climate feedbacks (carbon storage and energy exchange), ecosystem services such as wildlife and berry habitat, and landscape flammability. Wildfi...

“How do you explain to an innocent citizen of the free world importance a credit default swap on double-A tranche subprime-backed collateralized debt obligation” (Lewis 222-3)? This question, asked by author Michael Lewis through eyes one his subjects – Ben Hockett appears have answer: with great difficulty. Lewis's book, The Big Short: Inside Doomsday Machine, lays out internal workings invest...