Now showing items 1-10 of 33
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 ...
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 ...
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 ...
Lines tested in the International Spring Wheat Yield Nurseries (ISWYN) 1964-1994
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 ...
Wheat production and grower practices in the Yaqui Valley, Sonora, Mexico
Wheat yields in the Yaqui Valley of NW Mexico have appeared to remain stable in the past decade despite the release of new varieties and improved agronomic recommendations. A study was conducted during the winter of 1990/91 ...
Update on Karnal bunt research in Mexico
Mexican officials from the Centro de Investigaciones Agricolas del Noroeste (CIANO) and Sanidad Vegetal, U.S. Quarantine officials and CIMMYT staff met in Ciudad Obregon on May 8-9,1991, to review the status of the disease ...
Vernalization requirement and response to day length in guiding development in wheat
Vernalization requirement and response to day length are the major factors controlling development in wheat (Triticum aesitvum L.). This study was to determine how they integrate in the field in Obregon, Sonora, Mexico to ...