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Report
Results of the 1st International Heat Stress Genotype Experiment
(CIMMYT, 1992)
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 ...
Report
Increasing the yield potential of irrigated bread wheat: basis for physiological research at CIMMYT
(CIMMYT, 1992)
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 ...
Report
Using canopy temperature depression to select for yield potential of wheat in heat stressed environments
(CIMMYT, 1997)
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 ...
Report
Photosynthetic characteristics of synthetic bread wheats
(CIMMYT, 1994)
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 ...
Report
Research on barley yellow dwarf: state of the art of the CIMMYT program and its future research focus
(CIMMYT, 1994)
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. ...
Report
Breeding resistance to yellow (stripe) rust in wheat
(CIMMYT, 1997)
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 ...
Report
CIMMYT/NARS Consultancy on ME1 bread wheat breeding: 4-7 April, 1995 Cd. Obregon, Sonora, Mexico
(CIMMYT, 1995)
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 ...
Report
Wheat breeders' perspectives on genetic diversity and germplasm use: findings from an international survey
(CIMMYT, 1996)
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 ...
Report
1995/96 World wheat facts and trends: understanding global trends in the use of wheat diversity and international flows of wheat genetic resources
(CIMMYT, 1996)
This document describes wheat's origins and the flows of germplasm between various regions of the world. It summarizes some of the tools biological and social scientists use to measure genetic diversity. It examines patterns ...
Report
Lines tested in the International Spring Wheat Yield Nurseries (ISWYN) 1964-1994
(CIMMYT, 1996)
This publication marks the end of an era; after 30 years, the International Spring Wheat Yield Nursery (ISWYN), flagship of the international yield nurseries, has been discontinued. The ISWYN will be replaced by several ...