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3. The Influence of Temperature upon the Metabolism and Expression of Disease Resistance in Selfed Lines of Corn 1
Author(s) -
Dickson James G.,
Holbert James R.
Publication year - 1926
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1926.00021962001800040003x
Subject(s) - agricultural experiment station , resistance (ecology) , agriculture , management , library science , agricultural economics , political science , operations research , agronomy , biology , engineering , history , economics , archaeology , computer science
The future development of field crops is largely concerned with the study of genetic entities in response to their environment. The agronomist, the geneticist, the physiologist, and the plant pathologist, in other words, those most closely associated with the improvement of crop plants, must accept the fact that environment does influence plant development. Therefore, while each experimenter is approaching the problem from a slightly different angle, all are concerned with the expression of correlated genetic factors under a constantly varying environmental complex. The pathologist of today, for example, whether studying a new disease, restudying a disease long known, developing control measures, or specifically selecting disease-resistant strains, must first chart the range over which environment influences disease development and, second, define the nature of this influence in terms of parasite, host p'ant, and disease. This problem varies with the different diseases. The simplest type, by far, is where the rather cosmopolitan parasite