Open Access. Powered by Scholars. Published by Universities.®
- Keyword
- Publication
- Publication Type
Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
A Study Of The Environmental Conditions Influencing The Development Of Stem Rust In The Absence Of An Alternate Host. Ii. Infection Studies With Puccinia Graminis Tritici Form Iii And Form Ix, George L. Peltier
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Stakman and Levine have shown that Puccinia graminis tritici (Pers.) Erikss. and Henn. consists of a number of biologic forms, which can be determined by their action on different varieties of Triticum species. To date 37 such biologic forms have been identified by them through the parasitic action on 12 differential hosts chosen from a large number of varieties of Triticum species. To determine whether these biologic forms remain constant in their behavior under various environmental conditions, a detailed study of the host-parasite relation was undertaken with 2 of these forms. At the same time an opportunity was afforded to …
Size And Structure Of Leaves Of Cereals In Relation To Climate, William Edward Bruner, John E. Weaver
Size And Structure Of Leaves Of Cereals In Relation To Climate, William Edward Bruner, John E. Weaver
University Studies (University of Nebraska): Papers
Although a very large amount of work has been done on the variation in form, size, and anatomical structure of native plants grown under different conditions, relatively little attention has been given to similar studies of crop plants. As far as we are able to ascertain, no investigations have been made of variation in the leaves of cereal crops grown under widely different, measured environments.
During the past few years (1920-23), in connection with studies on the development and activities of the roots of crop plants (Weaver, Jean, and Crist, 1922), plant production as a measure of environment (Weaver, 1924), …
Hybridization Of Wheat, Floyd M. Beach
Hybridization Of Wheat, Floyd M. Beach
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this paper is to set forth the purpose of wheat hybridization. To do this properly it is necessary to know the history of hybridization of plants. Also to know some of the workers in this field and the hybrids produced by them. In the work at the Experiment Stations the various experimenters have discovered many interesting facts which it is necessary to know and understand. To thoroughly comprehend the work it is also necessary to do the actual processes of the work and to carry the hybrid through several generations and eventually to the goal for which …
Mendelian Inheritance In Wheat Hybrids, J. Leo Mortensen
Mendelian Inheritance In Wheat Hybrids, J. Leo Mortensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Until the beginning of the present centry the general opinion was that Egypt and Mesopotamia were the earliest homes of cultivated plants. Recent translations of the old Chinese records, however, reveal the fact that many of our cultivated plants were grown by the ancient peoples of China prior to the time of the Egyptians.
Dettweiler (11) (1914) writes: "Today it is admitted--except by a few--that the original home of the primitive European population, the Indo-Germans, is not Asia but northern Europe, that they developed their culture there in the late stone age, and that they then dispersed in their wanderings …
Pericarp Studies In Maize. I. The Inheritance Of Pericarp Colors, E. G. Anderson, R. A. Emerson
Pericarp Studies In Maize. I. The Inheritance Of Pericarp Colors, E. G. Anderson, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Introduction ... 466
Nomenclature ... 467
Pigments present in colored pericarp ... 467
Factor relations of pericarp colors ... 468
Factor relations of red pericarp, P ... 468
Factor relations of cherry pericarp ... 471
Discussion and Summary ... 474
Literature Cited ... 475