The'heat unit approach," in use for over two centuries, is a scheme for studying plant-
temperature re-lationships by the accumulation of daily mean temp) era-tures above a …

A primary factor affecting crop development is temperature, as modulated by other factors
including daylength, vernalization, heat and cold stress, and water stress. The rate of …

C. Raunkiaer, who on January 1, 1912, succeeded E. Warming as Professor of Botany in the
University and Director of the Botanic Garden and Museum at Copenhagen, is one of that …

Temperatures were measured in a perennial ryegrass crop in the field and an attempt was
made to relate temperature to growth. The instruments used are described. Air and soil …

For a time the study related to plants alone an associated with botany. Later, animals, and
still lat tion of periodical phenomena of plants and animal were included, and from the first …

Skip the header click to show the menu Menu Cart Login Login/Register Institutional Access
Access Options Enter words / phrases / DOI / ISBN / keywords / authors / etc Search Advanced …

The importance of the shape of a species response curve to an environmental gradient is
reviewed. The implications for vegetation theory, ordination methods, species as indicators …

Ansari, AQ, and WE Loomis.(Iowa State University, Ames.) Leaf temperatures. Amer. Jour.
Bot. 46 (10): 713–717. Illus. 1959.—Leaf temperatures were measured with a thermocouple …

This is the Institute of Biology's Studies in Biology No. 86, and is presented in chapters
entitled:(a) temp. and plant life;(b) heat balance in plants;(c) temp. and metabolism;(d) temp …

Leaf extension rates of perennial ryegrass cv. S24, were examined in the field in relation to
the seasonal changes in soil and air temperature. A technique using heating cables buried …