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CIMMYT contributes to the development of a world with healthier and more prosperous people — free from the threat of global food crises — and with more resilient agri-food systems.

Chemical methods for determining protein quality in cereal grains have been used at the International Maize and Wheat Improvement Center (CIMMYT) to rapidly identify and select improved cereal lines by screening early generation germplasm from the different breeding programs. Among the techniques described are: rapid initial screening tests for tryptophan in maize endosperm, tests for dye bind ...

SUBJECT: lysine; triticales; cebada; analisis quimico; orge

An increasing number of countries in the tropical belt have reacted to increased wheat consumption by establishing local wheat research and production programs. By means of simple simulation models based on climatic variables, potential wheat yields (root, shoot, and grain yields) can be calculated for tropical environments. These models may be helpful for extrapolation of results to other geo ...

SUBJECT: investigacion; zone tropicale/ methode non optimisante; modele; ble; trigo

Both the production and productivity of wheat have increased in India to an appreciable extent since the introduction of the semidwarf varieties from Mexico, and concerted efforts have been made to multiply of quality seed. Production has gone up from 12.25 million tons in 1965-66 to 42.5 million tons in 1983-84; productivity has increased from 913 to 1863 kg/ha. Certified seed production has ...

SUBJECT: production de semences; inde; produccion de semillas; mercadeo; ble

Growing degree days (GDD) is a parameter calculated as the average daily temperature less a predetermined base temperature. It is useful when maize growing periods are compared between locations or seasons that differ markedly in temperature, allowing maturities to be standardized because GDD gives a quantitative measure of ambient environmental heat available to support plant growth. This pub ...

SUBJECT: temperatura del medio ambiente; calor; temperature ambiante; madurez; zea mays

This publication presents several aspects of regional cooperation in maize research in the Middle East and North Africa. Background on maize production in this area, the role of CIMMYT's Maize Program in developing and improving maize germplasm for delivery along with other research products or services to national maize scientists, the exchange of germplasm, techniques and ideas shared by mai ...

SUBJECT: extension; turquie; syrie; politica de investigacion/ egipto; portugal

POSTED TO: CIMMYT Today (CIMMYT) [0304-5447]

This publication contains maps and data related to 22 of the 25 developing countries that produce over 100,000 has. of wheat. This information is based on contributions by national programs and CIMMYT staff. Data presented in the tables refer to type of wheat grown, region's area, varieties' maturity, and moisture stress and losses due to diseases and/or insects

SUBJECT: pays en developpement; paises en desarrollo; ble; trigo

The Kenya Seed Company began in 1956 for the production and marketing of agricultural seed. Maize seed now constitutes its largest crop, with a volume of 14,000 tons in 1984. For production of certified seed, Kenya Seed contracts with selected growers, of which 35% are government farms and 65% are individual growers. The company supplies basic seed to the growers, who grow the hybrids with the ...

SUBJECT: kenya/ stockage des semences; certification des semences; variete; certificacion de semillas; hibridos

This publication presents several aspects of regional cooperation in maize research in the Middle East and North Africa. Background on maize production in this area, the role of CIMMYT's Maize Program in developing and improving maize germplasm for delivery along with other research products or services to national maize scientists, the exchange of germplasm, techniques and ideas shared by mai ...

SUBJECT: extension; turquie; syrie; politica de investigacion/ egipto; portugal

POSTED TO: CIMMYT Hoy (CIMMYT) [0304-5390]

This paper presents an overview of trends in consumption, production, and trade of agricultural products in Latin America (LA) over the last two decades. After identifying and analysing diverse problems in the food security strategy for this region, the authors state that the use of the traditional definition of staples presents serious limitations in LA; that the nutritional state of the poor ...

SUBJECT: politique alimentaire/ preference alimentaire; exportation; amerique latine; production; america latina

Wheat and barley are cultivated under a wide range of environments in South Asia, and the climates vary from temperate to tropical. In Southeast Asia, wheat, barley, and triticale are experimental crops. There are a number of rotations involved, as cropping intensities are generally greater than one crop in both South and Southeast Asia. The influence of environment and cropping system has a p ...

SUBJECT: distribution naturelle; triticales; pourriture; podredumbres; asia tropical/ raices