Breeding and agronomic practices for winter survival in cereals
Material type: TextPublication details: Tbilisi (Georgia) CIMMYT : 2004Description: p. 270-271Subject(s): DDC classification:- 633.1147 BED
Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
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Conference proceedings | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Publications Collection | 633.1147 BED (Browse shelf(Opens below)) | 1 | Available | 1I630072 |
Abstract only
The availability of highly adapted cu1tivars with superior low-temperature (LT) tolerance is considered as a prerequisite for successful winter cereals production in many areas of the world. However, even the hardiest cultivars can be damaged by L T if proper attention is not paid to agronomic practices, especially in regions of marginal adaptation. Conversely the best cu1tivar will not be successful un1ess highly adapted cu1tivars are available for production. The objectives of this paper are to discuss: 1) breeding for LT tolerance and developmental regulation of LT -induced genes expression and 2) the effect of agronomic practices on winter survival in cereals as follows: Breeding for LT tolerance: Advances in plant physiology and biotechnology have provided opportunities for plant breeders to expand their attack on the LT tolerance barrier that has frustrated them for so long. Exploitation of new technology to produce LT tolerant cu1tivars will require close cooperation between plant breeders, physiologists and biotechnologist. Evaluation of LT resources, selection methods, morphological, agronomical and phenological characters associated with LT tolerance, the regulatory role of developmental genes on expression of LT tolerance in cereals under field and controlled conditions, molecular aspects of regulation of cold -induced genes, transition from the vegetative to the reproductive are discussed. Suggestions are made as to how research in this particular area might best proceed. Effect of agronomic practices on winter survival: Role of crop management such as sowing depth, sowing dates, soil fertility, methods of sowing on winter survival and cereals production are discussed in low and high cold stress regions. It is concluded that understanding of the mechanisms which winter cereals use to survive periods of LT stress and similarly understanding of the role of crop management on winter survival play important role in winter cereals production in low and high cold stress regions.
English
0408|AGRIS 0401|AL-Wheat Program
Juan Carlos Mendieta
CIMMYT Publications Collection