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Mostrando ítems 11-20 de 51
Report
Epidemiology of wheat rusts in the western hemisphere
(CIMMYT, 1974)
Shortly after the turn of the century, devastating wheat rust epidemics in the Great Plains of North America (Northern Mexico, the Plains of the U.S.A. and the Prairie Provinces of Canada), prompted the study of physiologic ...
Report
Results of the fourth International Spring Wheat Yield Nursery, 1967-1968
(CIMMYT, 1971)
Fifty wheat vanetles representative of the major spring types were tested in the Fourth International Spring Wheat Yield Nursery ( ISWYN). Results were obtained from 63 locations throughout the spring wheat regions of the ...
Report
Results of the second International Spring Wheat Yield Nursery, 1965-1966
(CIMMYT, 1968)
For the past several years the Rockefeller Foundation and later the International Maize and Wheat Improvement Center (CIMMYT) has prepared and coordinated a series of international yield trials in spring wheats. Originally ...
Report
Results of the third Near East American Spring Wheat Yield Nursery, 1963-1965
(CIMMYT, 1966)
The cooperative Food and Agriculture Organization-Rockefeller Foundation, Near East-American Spring Wheat Yield Nursery originated as an outgrowth of a recommendation made by Dr. Jose Vallega (formerly with the Ministry ...
Report
Results of the fourth Inter-American Spring Wheat Yield Nursery 1963-1964
(CIMMYT, 1967)
Prior to 1960. a number of scientists who had had occasion to stqdy uniform sets of material such as the International Rust Nursery of the United States Department of Agriculture. noticed that, apart from disease reaction. ...
Report
Results of the first International Spring Wheat Yield Nursery 1964-1965
(CIMMYT, 1968)
Adaptation is perhaps the most elusive concept in plant breeding. Not only is there surprisingly little information concerning the performance of varieties over a broad range of environments in even the major crop plants, ...
Article
A survey on leaf rust resistance in the USDA World Durum Collection
(CIMMYT, 1971)
Leaf rust of wheat, Puccinia recondita rob. ex Desm., is a major disease of wheat in many areas of the world. Samborski and Peturson (1960) reported reduction in yield of 58 percent at Winnipeg, Canada. Phipps (1938) ...
Report
Results of the sixth International Spring Wheat Yield Nursery (ISWYN), 1969-1970
(CIMMYT, 1972)
The Sixth International Spring Wheat Yield Nursery (ISWYN) was composed of 50 spring wheat varieties representative of the major spring wheat types. Data, received from 60 locations throughout the spring wheat regions of ...
Report
Results of the third International Bread Wheat Screening Nurseries (IBWSN) (Series A and B), 1969-1970
(CIMMYT, 1971)
Many potentially useful advanced spring wheat lines were identified in the Third International Bread Wheat Screening Nurseries (Series A). One table is presented in summary of those entries which gave resistant type reactions ...
Report
A survey on stem rust resistance in the USDA world durum collection and in CIMMYT durum breeding lines
(CIMMYT, 1970)
Utilizing the stem rust races with known pathogenicity genes, 349 varieties of durums have been screened. These varieties were selected from over 3,000 of the USDA World Durum Collection on basis of their field reaction ...