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1990-91 CIMMYT World wheat facts and trends: wheat and barley production in rainfed marginal environments of the developing world
A synopsis of recent trends in rainfed marginal environments of the developing world is followed by a description of the major wheat and barley farming systems in West Asia-North Africa (WANA) and South Asia (the role of ...
Results of the 1st International Heat Stress Genotype Experiment
Fischer (1989) summarized the detrimental effects of high temperature on wheat growth as follows: Yield reduction can occur at temperatures above a mean as low as 150C, with the spike and grain growth phases being especially ...
Increasing the yield potential of irrigated bread wheat: basis for physiological research at CIMMYT
Yield potential (YP) is defined as the "yield of a cultivar grown in environments to which it is adapted when nutrients and water are nonlimiting, and when pests, diseases, weeds, lodging, and other stresses are effectively ...
Using canopy temperature depression to select for yield potential of wheat in heat stressed environments
The main objective of the study was to validate the use of canopy temperature depression (CTD) as a rapid early generation screening tool for heat tolerance in wheat. CTD was measured at hot sites in Mexico on F2 derived ...
Photosynthetic characteristics of synthetic bread wheats
In the process of genetic improvement of bread wheat, photosynthetic rate per unit leaf area has decreased significantly from the maximum photosynthetic rate (Pmax) of the crop's diploid ancestors (donors of the A, B, and ...
CIMMYT World wheat facts and trends: supplement 1995 ongoing research at CIMMYT: understanding wheat genetic diversity and international flows of genetic resources
This supplement to the CIMJvfYT World Wheat Facts and Trends series summarizes objectives and preliminary results of a study of wheat genetic diversity and international flows of genetic resources (final results will appear ...
Research on barley yellow dwarf: state of the art of the CIMMYT program and its future research focus
This Wheat Special Report is motivated by changes in leadership and funding of CIMMYT's research on barley yellow dwarf viruses (BYD viruses). In 1991, P.A. Burnett, who headed the section in the 1980s, left CIMMYT. R. ...
Breeding resistance to yellow (stripe) rust in wheat
The information contained in this paper is a precis of the PhD thesis of Dr. H.P. Bimb. Since yellow (stripe) rust has recently reared its head in West and South Asia, the rapid publication of this Wheat Program Special ...
CIMMYT/NARS Consultancy on ME1 bread wheat breeding: 4-7 April, 1995 Cd. Obregon, Sonora, Mexico
Through the mechanism of internally managed external reviews (IMERS), all activities of the Wheat Program were reviewed in the period 1990-1994. In general, this was a satisfactory exercise, except that we felt NARS input ...
Wheat breeders' perspectives on genetic diversity and germplasm use: findings from an international survey
Although there is much debate about the role of scientific plant breeding in the possible reduction of genetic diversity in commercially grown crop plants, few studies have recorded breeders' actual use of materials and ...