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Relationship of Base Temperature to Development of Spring Wheat

Published online by Cambridge University Press:  03 October 2008

Alejandro H. Del Pozo ,
Jorge García-Huidobro ,
Rafael Novoa  and
Sergio Villaseca
Alejandro H. Del Pozo
Affiliation:
Instituto de Investigaciones Agropecuarias, Estación Experimental Quilamapu, Chillán
Jorge García-Huidobro
Affiliation:
Instituto de Investigaciones Agropecuarias, Estación Experimental La Platina, Santiago, Chile
Rafael Novoa
Affiliation:
Instituto de Investigaciones Agropecuarias, Estación Experimental La Platina, Santiago, Chile
Sergio Villaseca
Affiliation:
Instituto de Investigaciones Agropecuarias, Estación Experimental La Platina, Santiago, Chile
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Summary

The base temperature and thermal time for different development stages of spring wheat cultivars were calculated using a linear relation between the rate of development and the mean temperature. The results show that germination, emergence, tillering and leaf elongation (the vegetative phase) have a base temperature around 2°C but the elongation of the culm and the reproductive phase (tillering-maturity) have a base temperature over 6°C. A general model to describe the time to maturity of spring wheats, which takes account of these different phases, is proposed.

Type
Research Article
Information
Experimental Agriculture , Volume 23 , Issue 1 , January 1987 , pp. 21 - 30
Copyright
Copyright © Cambridge University Press 1987

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