THE INHERITANCE OF LOOSE SMUT RESISTANCE.: I. THE INHERITANCE OF RESISTANCE IN FOUR BARLEY VARIETIES IMMUNE TO RACE 2 OF LOOSE SMUT

1962 ◽  
Vol 42 (1) ◽  
pp. 69-77 ◽  
Author(s):  
E. N. Larter ◽  
H. Enns
Keyword(s):  
Disease Resistance ◽  
Dominant Gene ◽  
The Other ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Loose Smut ◽  
Race 2 ◽  
Or Genes ◽  
Dominant Genes

Four barley varieties, each immune to a Valki-attacking culture of loose smut (designated as race 2), were studied with respect to the inheritance of their resistance. Jet (C.I. 967) and Nigrinudum (C.I. 2222) were each found to possess two independent dominant genes determining resistance. Steudelli (C.I. 2266) proved to be immune to race 2 through the action of a single dominant gene, while resistance of Hillsa (C.I. 1604) was found to be conditioned by two complementary dominant genes. The absence of susceptible F3 families in crosses between Jet, Nigrinudum, and Steudelli indicated that these three varieties have in common a gene or genes for resistance to the race of smut used. The two complementary genes for resistance in Hillsa proved to be distinct from those of the other three varieties under study.The use of genetic analyses of disease resistance based upon classification of F3 families of the backcross to the resistant source is described and the merits of such a method are discussed.

INHERITANCE OF RESISTANCE TO LOOSE SMUT, COVERED SMUT AND FALSE LOOSE SMUT IN THE BARLEY VARIETY JET

1962 ◽  
Vol 42 (1) ◽  
pp. 176-189 ◽  
Author(s):  
D. R. Metcalfe
Keyword(s):  
Close Association ◽  
Dominant Gene ◽  
Barley Variety ◽  
The Other ◽  
Puccinia Graminis ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Loose Smut ◽  
Ustilago Hordei ◽  
Dominant Genes

The inheritance of reaction to single cultures of Ustilago nuda (Jens.) Rostr., Ustilago nigra Tapke, and Ustilago hordei (Pers.) Lagerh. was studied in the F1, F2 and F3 generations of crosses between the resistant barley variety Jet and the susceptible varieties Vantage and Plush. It was concluded that Jet has a single dominant gene for resistance of U. nuda and probably dominant genes for resistance of U. nigra and U. hordei. A close association was detected, in the segregating populations, between the reactions to U. nigra and U. hordei. No association was detected between resistance to U. nuda and resistance to the other two smut species. No associations were found between reaction to any of the three smut species and the genes responsible for the following marker characters: resistance vs. susceptibility to Puccinia graminis tritici Eriks. and Henn. (Tt), two- vs. six-row spike (Vv), naked vs. hulled kernel (Nn), black vs. white lemma and pericarp (Bb), and rough vs. smooth awn (Rr).

THE INHERITANCE OF LOOSE SMUT RESISTANCE.: II. THE INHERITANCE OF RESISTANCE IN THREE BARLEY VARIETIES IMMUNE TO RACE 2

1962 ◽  
Vol 42 (4) ◽  
pp. 707-710 ◽  
Author(s):  
E. N. Larter
Keyword(s):  
Dominant Gene ◽  
Unknown Origin ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Loose Smut ◽  
The Subject ◽  
Race 2 ◽  
Dominant Genes

The inheritance of smut resistance in two introductions of Abyssinian origin, Abyssinian (C.I. 668) and an unnamed variety C.I. 5798, as well as a variety of unknown origin, Kitchin (C.I. 1296), was the subject of study.From the results it was concluded that resistance in each variety is governed by a single dominant gene and that this one gene is common to all three varieties. Moreover, the varieties Steudelli (C.I. 2266) and Jet (C.I. 967), which were shown from a previous study to possess one and two dominant genes for resistance respectively, were found to possess the same gene as the three resistant stocks under study.

INHERITANCE OF RESISTANCE TO USTILAGO NUDA IN BARLEY

1952 ◽  
Vol 30 (5) ◽  
pp. 525-536 ◽  
Author(s):  
William P. Skoropad ◽  
L. P. V. Johnson
Keyword(s):  
Dominant Gene ◽  
Genetic Constitution ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Loose Smut ◽  
New Gene ◽  
Ustilago Nuda ◽  
New Race

The inheritance of resistance to loose smut races Tr and Ts (a new race) was studied in several barley crosses and backcrosses in which the varieties Jet and Titan were the resistant parents. Jet is resistant to race Tr and race Ts, Titan to race Tr only. Genetical analyses were based (a) on a classification of F2 plants according to the smut reaction of their F3 progeny, and (b) on the reaction of selfed generation backcrosses involving recessive (susceptible) parents. The resistance of Titan and of Jet to Tr was found in each case to be due to a single, dominant gene, designated as Un and Un3, respectively. The resistance of Jet to Ts was also found to be due to a single, dominant gene. This is probably a "new" gene and has been provisionally designated Un6. Resistance was found to be determined by the genetic constitution of the developing embryo rather than by that of surrounding floral structures.

Inheritance of resistance to Fusarium oxysporum f. sp. lycopersici races 2 and 3 in Lycopersicon pennellii

1987 ◽  
Vol 38 (4) ◽  
pp. 729 ◽  
Author(s):  
DJ McGrath ◽  
D Gillespie ◽  
L Vawdrey
Keyword(s):  
Fusarium Oxysporum ◽  
Dominant Gene ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Tomato Cultivar ◽  
Lycopersicon Pennellii ◽  
Race 2 ◽  
Dominant Genes

An accession of Lycopersicon pennellii, PI414773, was resistant to race 2 isolate 18947 and race 3 isolate 14844 of Fusarium oxysporum f. sp. lycopersici. Tomato cultivar Contender, which is homozygous for gene 1-2, was resistant to race 2 but susceptible to race 3 of the pathogen. Cultivar Rouge de Marmande was susceptible to both race 2 and race 3. The inheritance of resistances to race 2 and race 3 in PI414773 was investigated in test crosses involving parents Contender, Rouge de Marmande and PI414773. Segregation of the F2 of the crosses Rouge de Marmande x PI414773 and Contender x PI414773 revealed that resistance to race 2 in PI414773 was controlled by two independent dominant genes, one of which is allelic with gene I-2. Segregations in F2, backcrosses and inbred backcrosses derived from Contender x PI414773 indicated that a single dominant gene conferred resistance to race 3. The symbol I-3 was proposed for this gene.

INHERITANCE OF CROWN RUST RESISTANCE IN THREE ACCESSIONS OF AVENA STERILIS

1980 ◽  
Vol 22 (1) ◽  
pp. 27-33 ◽  
Author(s):  
D. E. Harder ◽  
R. I. H. McKenzie ◽  
J. W. Martens
Keyword(s):  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Avena Sterilis ◽  
Oat Crown Rust ◽  
Crown Rust Resistance ◽  
Resistance Spectrum ◽  
Dominant Genes

The inheritance of resistance to oat crown rust was studied in three accessions of Avena sterilis L. Accession CAV 4274 originated from Morocco, CAV 4540 from Algeria, and CAV 3695 from Tunisia. Seedling rust tests on F2 backcross families indicated the presence of two dominant genes for crown rust resistance in CAV 4274. One of these, a gene conditioning resistance to most races tested, was linked or allelic to gene Pc-38, and was designated gene Pc-62. The second gene conferred resistance only to one of the six races studied, and was not tested further. In CAV 4540, a single dominant gene, Pc-63 was possibly allelic with Pc-62 and linked or allelic to Pc-38. Genes Pc-62 and 63 are generally similar to Pc-38 in their resistance spectrum, but these three genes are differentiated by races CR 102, CR 103, and CR 107. A single dominant gene in CAV 3695 appeared to be Pc-50.

Inheritance of resistance to rust (Phakopsora pachyrhizi) in soybeans

1980 ◽  
Vol 31 (5) ◽  
pp. 951 ◽  
Author(s):  
RJ McLean ◽  
DE Byth
Keyword(s):  
Dominant Gene ◽  
Soybean Rust ◽  
Inheritance Of Resistance ◽  
Phakopsora Pachyrhizi ◽  
Single Dominant Gene ◽  
Dominant Genes

A study was conducted to determine the inheritance of resistance to soybean rust in three soybean accessions-PI200492, Tainung 3 and Tainung 4. The results suggest that PI200492 and Tainung 3 contain the same single dominant gene for resistance, and that Tainung 4 contains two dominant genes for resistance, one of which is identical with that in PI200492 and Tainung 3.

INHERITANCE OF LOOSE SMUT RESISTANCE: II. INHERITANCE OF RESISTANCE IN THREE BARLEY VARIETIES TO RACES 1, 2, AND 3 OF USTILAGO NUDA (JENS.) ROSTR.

1963 ◽  
Vol 43 (3) ◽  
pp. 390-396 ◽  
Author(s):  
D. R. Metcalfe ◽  
W. H. Johnston
Keyword(s):  
Single Gene ◽  
Winter Barley ◽  
Barley Variety ◽  
The Other ◽  
Duplicate Genes ◽  
Inheritance Of Resistance ◽  
Loose Smut ◽  
Race 1 ◽  
Ustilago Nuda ◽  
Race 2

The inheritance of resistance of the barley varieties Br. 5479–754, a derivative of Jet (C.I. 967), PR28, a derivative of C.I. 4966, and Valkie (C.I. 5748) to races 1, 2 and 3 of Ustilago nuda (Jens.) Rostr. was studied. The genes for resistance in all varieties were dominant in effect. Resistance to races 2 and 3 in Br. 5479–754 was due to a single gene and resistance to race 1 to duplicate genes. A single gene in PR28 controlled resistance to all three races. Valkie proved susceptible to race 2 and had single and independent genes for resistance to each of races 1 and 3. The genes for resistance to the various smut races in each variety was independent of those in the other two.The winter barley variety C.I. 4966 is a valuable new source of immunity to U. nuda.

The inheritance of resistance to Puccinia coronata and of floret characters in Avena sterilis

1983 ◽  
Vol 25 (4) ◽  
pp. 329-335 ◽  
Author(s):  
L. S. L. Wong ◽  
R. I. H. McKenzie ◽  
D. E. Harder ◽  
J. W. Martens
Keyword(s):  
Rust Resistance ◽  
Dominant Gene ◽  
Crown Rust ◽  
Puccinia Coronata ◽  
Inheritance Of Resistance ◽  
Avena Sterilis ◽  
Field Isolates ◽  
Crown Rust Resistance ◽  
Dominant Genes

The inheritance of resistance to Puccinia coronata, awn development, lemma pubescence, and lemma color were studied in the Avena sterilis accessions CAV 4248, CAV 4656, and CAV 4904. Three independent, partially dominant genes (Pc-64, Pc-65, Pc-66) in CAV 4248, one partially dominant gene (Pc-67) in CAV 4656, and a dominant gene (Pc-68) in CAV 4904 were identified which conferred resistance to P. coronata. Genes Pc-64, Pc-65, Pc-66, Pc-67, and Pc-68 conferred resistance to 13, 8, 6, 12, and 14 races, respectively, of the 14 races of P. coronata tested. Gene Pc-68 conferred resistance to all field isolates of P. coronata collected in Canada in 1981 and was found to be closely linked or allelic to gene Pc-46. Awns and lemma pubescence were inherited monogenically in crosses with all three CAV accessions. Grey lemma color was controlled by one gene in CAV 4248 and by two genes in CAV 4656. Brown lemma color was controlled by one gene, which was closely linked or pleiotropic with the gene for lemma pubescence in CAV 4904. There was no association between crown rust resistance and the three floret characters studied.

IDENTIFICATION OF RESISTANCE GENES IN BARLEY BY REACTIONS TO USTILAGO NUDA

1969 ◽  
Vol 49 (4) ◽  
pp. 447-451 ◽  
Author(s):  
J. G. Moseman ◽  
D. R. Metcalfe
Keyword(s):  
Hordeum Vulgare ◽  
Resistance Genes ◽  
Smut Fungus ◽  
Loose Smut ◽  
Hordeum Vulgare L ◽  
Race 1 ◽  
Ustilago Nuda ◽  
Race 2 ◽  
Or Genes ◽  
Similar Gene

The reactions of 18 cultivars and selections of barley, Hordeum vulgare L., to inoculations with three cultures of the loose smut fungus, Ustilago nuda (Jens.) Rostr., were determined. The following conclusions were derived by analyzing the reactions of cultivars Jet (CI 967) and Milton (CI 4966) and derivatives from them to inoculations with cultures 244 of race 2, 49-70 of race 2, and 10 of race 1. Jet was shown to have two genes, Un3 and Un6, and Milton, one gene, Un8. Derivatives from Jet with only gene Un6 were distinguished from those with genes Un3 and Un6. Five host selections known to have a gene or genes at the same locus as Jet were shown to have gene Un6 or a similar gene at that locus.

scholarly journals The Inheritance and Association of Rust (Uromyces apendiculatus) Resistance and Foliar Abnormalities in Phaseolus vulgaris L.

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 823A-823
Author(s):  
J.M. Bokosi ◽  
D.P. Coyne ◽  
J.R. Steadman ◽  
D. O'Keefe ◽  
J. Reiser
Keyword(s):  
Phaseolus Vulgaris ◽  
Specific Resistance ◽  
Dominant Gene ◽  
Hybrid Plant ◽  
Single Dominant Gene ◽  
Phaseolus Vulgaris L ◽  
Recessive Genes ◽  
Dominant Genes

The inheritance of specific resistance (SR) and foliar abnormalities (FA) were studied in the F2 and F3 progeny of the following crosses; `PC-50' × Chichara 83-10, `PC-50' × `EZ Pick', A-10-2 × GN `Beryl', and A-10-2 × P114. A single dominant gene controlled SR to rust strain US85NP10-1 in `PC-50' × Chichara 83-10. Duplicate recessive genes determined foliar crippling (FC) in `PC-50' × Chichara 83-10 and A-10-2 × P114. The inheritance of hybrid plant abnormality in `PC-50' × `EZ Pick' and A-10-2 × GN `Beryl' differed from previously reported complementary dominant genes or duplicate recessive genes. Foliar variegation (FV) was controlled by duplicate recessive genes in `PC-50' × Chichara 83-10 and by triplicate recessive genes in `PC-50' × `EZ Pick', A-10-2 × GN `Beryl', and A-10-2 × P114. No associations were detected between SR and FC, SR and FV, or FC and FV.

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