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Physiology and the breeding of winter-grown cereals for dry areas. Chapter 11

By: Richards, R.A | Improving Winter Cereals for Moisture-limiting Areas. Capri (Italy). 27-31 Oct 1985.
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: 1987ISBN: 0-471-91650-1.Subject(s): Biological properties | Crops | Ecology | Gramineae | Miscellaneous plant disorders | Physiological functions | Plant genetics and breeding | Plant physiology and biochemistry | Resistance to injurious factors | Resource management | Temperature | Yield components | Triticum | Yields AGROVOCDDC classification: 94-096714 In: Srivastava, J.P.; Acevedo,-E.; Varma,-S. (ICARDA, Aleppo (Syria)); Porceddu,-E. (University of Tuscia, Viterbo (Italy). Inst. of Agricultural Biology) (eds.). National Research Council of Italy, Viterbo (Italy); International Center for Agricultural Research in the Dry Areas, Aleppo (Syria). Drought tolerance in winter cereals: proceedings of an international workshop. Chichester (United Kingdom). John Wiley and Sons. 1987. p. 133-150Summary: This paper discusses how physiological processes and traits that affect higher yielding wheats may be modified by breeding and hence increase yields in the future. Reference is made to different rainfed environments. The following physiological processes and ways to improve them: (1) crop transpiration, by improving water extraction and decreasing surface water evaporation; (2) water-use efficiency, by increasing glaucousness, the amount of discrimination of the stable isotope 13C during the fixation of CO2, improving cool temperature vigour, and altering root/shoot partitioning; and (3) harvest index, by increasing hydraulic resistance in the seminal roots and by modifying leaf area development using determinate tillering genotype are discussed. Results from the breeding programme aiming at increasing yields in dry areas by improving each of the above processes are discussed as there are ways to validate the worth of specific traits and ways to incorporate traits into existing breeding programmesCollection: AGRIS Collection
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Reprint Reprint CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

AGRIS Collection 94-096714 (Browse shelf) Available
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1 table; 3 fig. 29 ref. Summary (En)

This paper discusses how physiological processes and traits that affect higher yielding wheats may be modified by breeding and hence increase yields in the future. Reference is made to different rainfed environments. The following physiological processes and ways to improve them: (1) crop transpiration, by improving water extraction and decreasing surface water evaporation; (2) water-use efficiency, by increasing glaucousness, the amount of discrimination of the stable isotope 13C during the fixation of CO2, improving cool temperature vigour, and altering root/shoot partitioning; and (3) harvest index, by increasing hydraulic resistance in the seminal roots and by modifying leaf area development using determinate tillering genotype are discussed. Results from the breeding programme aiming at increasing yields in dry areas by improving each of the above processes are discussed as there are ways to validate the worth of specific traits and ways to incorporate traits into existing breeding programmes

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