FURTHER EVIDENCE OF RESISTANCE IN BERBERIS VULGARIS TO RACE 15B OF PUCCINIA GRAMINIS f. sp. TRITICI

1958 ◽  
Vol 36 (3) ◽  
pp. 351-355 ◽  
Author(s):  
G. J. Green ◽  
T. Johnson
Keyword(s):  
Common Wheat ◽  
Stem Rust ◽  
Wheat Variety ◽  
Circumstantial Evidence ◽  
Puccinia Graminis ◽  
Wheat Stem Rust ◽  
Berberis Vulgaris ◽  
Pure Cultures ◽  
The Common ◽  
Common Wheat Variety

Plants of common barberry (Berberis vulgaris L.) were inoculated to determine their reaction to race 15B of wheat stem rust (Puccinia graminis Pers. f. sp. tritici Erikss. & Henn.). Only resistant-type infections occurred on plants inoculated with two pure cultures of race 15B-4 (Can.). Strong circumstantial evidence for the resistance of common barberry to race 15B was obtained from inoculations with sporidia from teliospores produced in the field. Sporidia from teliospores collected from the emmer wheat variety Vernal, which is selective for race 15B, produced only infections of a resistant type, and those from the common wheat variety Lee, also selective for 15B, caused both resistant and susceptible types of infections. Transfer of aeciospores to wheat from the susceptible type demonstrated that 15B was not present. Sporidia from teliospores on the varieties Reliance and Mentana, which are not selective for this race, caused infections of a susceptible type. Resistant-type and susceptible-type infections appeared when barberry leaves were infected with races 29 and 48A.

FREQUENCY OF MICRONUCLEI IN POLLEN QUARTETS OF COMMON WHEAT MONOSOMICS

1952 ◽  
Vol 30 (4) ◽  
pp. 371-378 ◽  
Author(s):  
J. W. Morrison ◽  
John Unrau
Keyword(s):  
Cell Wall ◽  
Common Wheat ◽  
Chinese Spring ◽  
Wheat Variety ◽  
Early Developmental Stage ◽  
D Genome ◽  
Distinct Cell ◽  
The Common ◽  
Early Developmental ◽  
Common Wheat Variety

The frequency with which 20 different monosomes of the common wheat variety, Chinese Spring, formed micronuclei in pollen quartets was determined. It was found that unless the study was made at an early developmental stage characterized by a distinct cell wall surrounding the quartets, the counts were unreliable, because some micronuclei were lost. The frequency of micronucleus formation was similar for anthers of a floret, florets of a spike, and plants of a monosome. Among the monosomes studied, there were three groups of three and four of two in which the total frequency of quartets with micronuclei, and the distribution of numbers of micronuclei per quartet, were strikingly similar. In the case of the groups of three, two monosomes were from the A and B genomes while one was from the D genome. This is interpreted as evidence of homoeology of chromosomes of a group and also that such chromosomes have undergone less change than those that do not form such series.

Genes for stem rust resistance in Thatcher wheat

2009 ◽  
Vol 89 (6) ◽  
pp. 1003-1008
Author(s):  
D R Knott
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Stem Rust ◽  
Rust Resistance ◽  
Triticum Aestivum L ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Genetic Studies ◽  
Number Of Genes ◽  
The Common

The common wheat (Triticum aestivum L.) cultivar Thatcher has resistance to many of the older races of stem rust (Puccinia graminis Pers. f. sp. tritici Eriks. & Henn.). Several genetic studies have shown that its resistance is complex in inheritance. To attempt to clarify the inheritance, 28 lines, each believed to carry a single resistance gene from Thatcher, were developed. The lines were tested with 13 races of stem rust. They fell into 13 types with resistance to from 1 to 11 races. Of the five genes previously identified in Thatcher, only two, Sr9g, and Sr12, were present in the lines. Four lines carried named genes, Sr6, Sr7a, Sr8a and S9d, which had not previously been detected in Thatcher. Thatcher is resistant to 8 of the 13 races. At least one line was resistant to each of the 13 races, including the five to which Thatcher is susceptible. Eleven of the 13 types of lines were resistant to race MCCD to which Thatcher is resistant. Seven of the types were resistant to race TMRT(15B-1) to which Thatcher is susceptible. Clearly, the inheritance of resistance in Thatcher is very complex and involves a considerable number of genes. It carries a surprising number of genes that appear to be hidden by the presence of suppressor genes or transposons.Key words: Common wheat, Triticum aestivum, Puccinia graminis, suppressors, tansposons

RESISTANCE OF COMMON BARBERRY (BERBERIS VULGARIS L.) TO RACE 15B OF WHEAT STEM RUST

1954 ◽  
Vol 32 (3) ◽  
pp. 378-379 ◽  
Author(s):  
T. Johnson ◽  
G. J. Green
Keyword(s):  
Stem Rust ◽  
Puccinia Graminis ◽  
Wheat Stem Rust ◽  
Berberis Vulgaris ◽  
Necrotic Spots

Twenty-four plants of barberry, Berberis vulgaris L., were inoculated with sporidia derived from several collections of race 15B of Puccinia graminis var. tritici Erikss. & Henn. Only five small pustules of aecia were produced on these plants; all other infections were limited to small necrotic spots or very small pustules of pycnia.

MONOSOMIC ANALYSIS OF GENES CONDITIONING STEM RUST RESISTANCE IN TWO COMMON WHEAT CULTIVARS

1974 ◽  
Vol 16 (2) ◽  
pp. 281-284
Author(s):  
A. K. Sanghi ◽  
E. P. Baker
Keyword(s):  
Common Wheat ◽  
Stem Rust ◽  
Somatic Hybrid ◽  
Rust Resistance ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Monosomic Analysis ◽  
Wheat Cultivars ◽  
Wheat Stem Rust ◽  
Chromosome 3B

The single genes in the cultivars Morocco and Yalta conditioning resistance to stem rust culture 103-H-2, a somatic hybrid between wheat stem rust (Puccinia graminis tritici) and rye stem rust (P. graminis secalis) which possesses unusual genes for avirulence on wheat, were each located by monosomic analysis on chromosome 3B. They were estimated to be approximately 9 map units apart.

Wheat stem rust in Australia dash 1969-1985

1992 ◽  
Vol 43 (3) ◽  
pp. 399 ◽  
Author(s):  
PK Zwer ◽  
RF Park ◽  
RA McIntosh
Keyword(s):  
Survey Data ◽  
Common Wheat ◽  
Resistance Genes ◽  
Stem Rust ◽  
Puccinia Graminis ◽  
Wheat Cultivars ◽  
Wheat Stem Rust ◽  
Cultivar Development ◽  
Resistant Genes ◽  
Australian Wheat

Pathogenic changes in Puccinia graminis f. sp. tritici (P. g. tritici) in Australia during the period 1969-1985 are reviewed. As found in a previous study covering the period 1954-1968, the frequencies of individual pathotypes were influenced by the combinations of resistance genes present in the most common wheat cultivars. From 1969 to 1978, pathotype composition and diversity varied between the four regions comprising the Australian wheat-growing area. However, from 1978 to 1985, pathotype 343-1,2,3,5,6 predominated in all regions. It is suggested that this pathotype was repeatedly derived from pathotype 326-1,2,3,5,6 at widely separated locations, and that these events facilitated its widespread increase. Another significant event was the specialization of P. g. tritici on triticale. Survey data suggest that pathotype 34-2,12, which rendered cultivar Coorong susceptible, developed from pathotype 34-2, possibly during 1979. A second pathotype which attacked cultivar Satu (designated 34-2,12,13) was detected in 1984. The deployment of different resistant genes in triticale and wheat has resulted in distinct populations within P. g. tritici adapted to each crop. Future Cultivar development for triticale should be aimed at maintaining this divergence.

scholarly journals Prevalence and Distribution of Common Barberry, the Alternate Host of Puccinia graminis, in Minnesota

Plant Disease ◽  
2005 ◽  
Vol 89 (2) ◽  
pp. 159-163 ◽  
Author(s):  
P. D. Peterson ◽  
K. J. Leonard ◽  
J. D. Miller ◽  
R. J. Laudon ◽  
T. B. Sutton
Keyword(s):  
United States ◽  
Stem Rust ◽  
Active Sites ◽  
The United States ◽  
Puccinia Graminis ◽  
Alternate Host ◽  
Wheat Stem Rust ◽  
State Program ◽  
Cereal Production ◽  
Active Class

A federal and state program operated from 1918 until the 1980s to eradicate common barberry (Berberis vulgaris), the alternate host of Puccinia graminis, from the major areas of cereal production in the United States. Over 500 million bushes were destroyed nationally during the program, approximately 1 million in Minnesota. Some sites in Minnesota where barberry bushes were destroyed remained in the “active” class when eradication was phased out in the 1980s. Active sites were defined as those on which there was still a possibility of emergence of barberry seedlings or sprouts arising from the parent bush. In the present study, from 1998 to 2002, 72 of the approximately 1,200 active sites in Minnesota were surveyed. Areas within 90 m of mapped locations of previously destroyed bushes were searched carefully at each site. Reemerged barberry plants were found on 32 sites. The reproductive status and GPS coordinates were recorded for each reemerged bush. More than 90% of the barberry bushes were found in counties with less than 400 ha of wheat per county, mostly in southeastern Minnesota, but one bush was found in a major wheat-producing county in northwestern Minnesota. Reemergence of barberry may serve as a source of new wheat stem rust races in future epidemics.

scholarly journals Proteomic analysis of low-molecular-weight glutenin subunits and relationship with their genes in a common wheat variety

3 Biotech ◽  
2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Hye-Rang Beom ◽  
Jin Sun Kim ◽  
You-Ran Jang ◽  
Sun-Hyung Lim ◽  
Chang-Kug Kim ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Common Wheat ◽  
Proteomic Analysis ◽  
Wheat Variety ◽  
Low Molecular Weight ◽  
Glutenin Subunits ◽  
Common Wheat Variety
Sign in / Sign up

Export Citation Format

Share Document