Wheat is an important food crop of the world, especially in Soviet Russia, U.S.A., China, India and Pakistan. Over one billion bushels of wheat are produced annually in U.S.A. The total area under wheat production in Pakistan during 1947-48 was 10 million aeres with an average yield of 12 bushels per acre.
The stem rust disease has been known for along time to be destructive to grain crops, even centuries before the Christian era. Rust is of major importance in both the U.S. and Pakistan. Jethro Tull recorded rust in England in 1725. In 1916, rust was serious over the entire world. Since 1900 there have been eight epidemic rust years when losses were estimated as much as 160 million bushels per year. The heaviest losses are in the humid hard red winter and hard red spring wheat areas.
Three methods of control are generally practiced for black stem rust of wheat. They are breeding resistant varieties barberry eradication and sulphur dusting. Of these, resistant varieties appear to be the most effective in the control of this disease.
The problem discussed in this paper involves the breeding and selection of rust-resistant spring wheat strains.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-4958 |
| Date | 01 May 1949 |
| Creators | Shah, Sayed Bad |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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