• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 158
  • 139
  • 37
  • 9
  • 8
  • 8
  • 8
  • 8
  • 8
  • 8
  • 8
  • 6
  • 6
  • 5
  • 3
  • Tagged with
  • 449
  • 146
  • 92
  • 80
  • 73
  • 69
  • 61
  • 60
  • 59
  • 57
  • 48
  • 46
  • 44
  • 41
  • 40
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Studies on production and germination of Teleutospores and on inheritance of pathogenicity in Puccinia helianthi.

Hennessy, Christopher Martin Reeves. January 1967 (has links)
No description available.
62

Effect of temperature and light on biology and development of Puccinia helianthi on sunflowers.

Sood, P. N. January 1968 (has links)
No description available.
63

Studies on variation in Puccinia helianthi.

Hennessy, Christopher Martin Reeves. January 1972 (has links)
No description available.
64

Genetics of host : parasite relationships between sunflowers and sunflower rust.

Miah, Muhammad Abdul Jabbar. January 1967 (has links)
No description available.
65

Characterization Of Yellow Rust And Stem Rust Resistant And Sensitive Durum Wheat Lines At Molecular Level By Using Biophysical Methods

Kansu, Cigdem 01 September 2011 (has links) (PDF)
Stem rust and Yellow rust diseases are the two major wheat fungal diseases causing considerable yield losses in Turkey and all around the world. There are studies which are carried out to identify and utilize resistance sources in order to obtain resistant lines of wheat. However, virulent pathotypes are continuously being important threats to wheat production and yield. For that reason, new approaches for rapid identification are needed. The aim of this study was to investigate and to understand the structural and functional differences between the resistant and sensitive durum wheat cultivars to the plant fungal diseases of stem and yellow (stripe) rusts. To aim this, forty durum wheat recombinant inbred lines (RILs), which were previously determined to be resistant or sensitive to stem and yellow rust diseases, were investigated by the noninvasive Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) Spectroscopy. Also, classification of the resistant and sensitive lines depending on the structural and functional differences has been attempted. The FTIR spectra for stem rust disease showed that, resistant durum wheat lines had a significant increase in the population of unsaturation in acyl chains of lipid molecules, an increase in lipid and in total protein content and also an increase in carboxylic acids and alcohols. For yellow rust disease, resistant lines had a significant increase in hydrogen bonding and they had also a more ordered membrane structure. In Principal Component Analysis for stem rust disease, according to 3700-650 cm-1 region, amide III band (1213-1273 cm-1 region) and C-H stretching region (3020- 2800 cm-1), the resistant and sensitive groups were separated successfully. For yellow rust disease, according to 3700-650 cm-1 region, Amide A and Amide III bands, the resistant and sensitive lines were grouped distinctly. FTIR spectroscopy provides a useful approach to determine the differences in molecular structure of durum wheat RILs regarding resistance of lines to fungal diseases. However, further research is still needed to ensure if the structural and functional differences in biomolecules of the samples could be used as molecular markers for discrimination of rust resistant materials from rust sensitive ones.
66

Studies on alfalfa rust (Uromyces striatus Schroet.)

Koepper, James Michael. January 1941 (has links)
LD2668 .T4 1941 K61 / Master of Science
67

A field study of the effects of leaf rust and stem rust on sister lines of a hard red winter wheat

Bieber, John Lewis. January 1960 (has links)
Call number: LD2668 .T4 1960 B54
68

Comparison of methods of analysis of field collections of leaf rust of wheat, Puccinia recondita Rob. ex Desm., for their physiologic race content

Roelfs, Alan P. January 1964 (has links)
Call number: LD2668 .T4 1964 R71 / Master of Science
69

The inheritance of resistance to leaf rust among certain differential crosses of wheat

Harris, Wallace Wayne. January 1955 (has links)
Call number: LD2668 .T4 1955 H39 / Master of Science
70

Reaction of F3 lines of the cross Wichita 5 x Chinese and Aegilops umbellulata to several races of leaf rust

Soliman, Atef Shafik. January 1962 (has links)
LD2668 .T4 1962 S65

Page generated in 0.0197 seconds