Mendelian inheritance of rust resistance to Melampsora larici-epitea in crosses between Salix sachalinensis and S. viminalis

The rust resistance of a 56-chromosome wheat-Agropyron derivative was found to be controlled by a gene or genes on a single Agropyron chromosome. Resistant wheat plants having 21II of wheat chromosomes plus a single added Agropyron chromosome were produced. Spikes of these plants were irradiated with either gamma rays or X-rays and seeds were irradiated with thermal neutrons. As a result of the irradiation, in at least five lines and possibly seven a piece of the Agropyron chromosome carrying the gene or genes for rust resistance was transferred to a wheat chromosome. One of the translocations is transmitted normally through the gametes but the remaining six show irregularities in transmission particularly through the pollen.

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The inheritance of stem rust resistance in Thatcher wheat

Canadian Journal of Plant Science ◽

10.4141/p99-016 ◽

2000 ◽

Vol 80 (1) ◽

pp. 53-63 ◽

Cited By ~ 10

Author(s):

D. R. Knott

Keyword(s):

Stem Rust ◽

Rust Resistance ◽

Triticum Aestivum L ◽

Stem Rust Resistance ◽

Puccinia Graminis ◽

Single Seed Descent ◽

Good Resistance ◽

Canadian Prairies ◽

Single Seed ◽

Inheritance Of Rust Resistance

Thatcher was the predominant wheat (Triticum aestivum L.) cultivar on the Canadian prairies in the 1950s. Until race 15B (TMH) of stem rust (Puccinia graminis pers. f. sp. tritici Eriks. & Henn.) became widespread, Thatcher had good resistance to stem rust, but was susceptible to leaf rust (P. recondita f. sp. tritici Rob. ex Desm.). Although genes for stem rust resistance have been identified in Thatcher, the inheritance of its resistance has never been fully understood. The objective of this research was to attempt to elucidate the inheritance of the resistance of Thatcher and to determine why it had a reputation as a poor parent for rust resistance. Over a period of 40 yr, crosses and backcrosses to a susceptible genotype and two sets of single seed descent (SSD) lines were studied. The second set of SSD lines was tested with isolates of six races of stem rust to which Thatcher is resistant. The data showed that Thatcher is a very heterogenous cultivar with individual plants differing widely in the genes for stem rust resistance that they carry. The inheritance of rust resistance varied greatly from race to race and was often quite complex. Either complementary genes or a gene plus a suppressor appeared to condition resistance to one race. Most genes gave resistance to only one race. The presence of Sr5, which Thatcher is known to have obtained from Kanred, was confirmed. Most of its many additional genes probably came from Iumillo durum wheat. Key words: Stem rust, Thatcher wheat, single seed descent

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Inheritance of rust resistance genes and molecular markers in microspore-derived populations of flax

Plant Breeding ◽

10.1046/j.1439-0523.2001.00558.x ◽

2001 ◽

Vol 120 (1) ◽

pp. 82-84 ◽

Cited By ~ 12

Author(s):

Y. Chen ◽

E. Kenaschuk ◽

P. Dribnenki

Keyword(s):

Molecular Markers ◽

Resistance Genes ◽

Rust Resistance ◽

Inheritance Of Rust Resistance ◽

Rust Resistance Genes

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THE INHERITANCE OF RUST RESISTANCE. III. THE INHERITANCE OF STEM RUST RESISTANCE IN NINE KENYA VARIETIES OF COMMON WHEAT

Canadian Journal of Plant Science ◽

10.4141/cjps57-043 ◽

1957 ◽

Vol 37 (4) ◽

pp. 366-384 ◽

Cited By ~ 15

Author(s):

D. R. Knott

Keyword(s):

Genetic Analysis ◽

Common Wheat ◽

Stem Rust ◽

Rust Resistance ◽

Hypersensitive Reaction ◽

Stem Rust Resistance ◽

Inheritance Of Resistance ◽

Susceptible Parent ◽

Inheritance Of Rust Resistance ◽

Moderate Resistance

The inheritance of resistance to races 15B and 56 of stem rust was studied in the varieties Kenya 58, Kenya 117A, Kenya C9906, Kenya 338.AC.2.E.2, Kenya Governor, Kenya B286, Kenya 291.J.1.I.1, Kenya 321.BT.1.B.1 and Kenya 350.AD.9.C.2. The first five varieties had been studied previously and crosses involving them were not repeated. The genetic analysis of the varieties was based on diallel crosses and backcrosses to a susceptible parent, Marquis.All nine varieties proved to carry Sr7, a gene which conditions resistance to race 15B. Four varieties, Kenya 58, Kenya C9906, Kenya 291 and Kenya 350, carry the gene Sr6, which conditions a hypersensitive reaction to both race 15B and race 56. In addition, four of the varieties carry Sr9 and five carry Sr10, two genes which produce moderate resistance to race 56. Kenya 338.AC.2.E.2 carries two additional dominant, complementary genes, Sr11 and Sr12, which condition resistance to race 56.The genes, Sr9, Sr10, Sr11 and Sr12 are important modifiers of the resistance to race 15B conditioned by Sr7, with Sr9 probably having the greatest effect.

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Inheritance of Rust Resistance in a Source of MC29 Sunflower Germplasm

Crop Science ◽

10.2135/cropsci1994.0011183x003400050015x ◽

1994 ◽

Vol 34 (5) ◽

pp. 1225-1230 ◽

Cited By ~ 8

Author(s):

C. J. Lambrides ◽

J. F. Miller

Keyword(s):

Rust Resistance ◽

Inheritance Of Rust Resistance

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Screening and Inheritance of Rust Resistance in Snap Bean

Egyptian Journal of Plant Breeding ◽

10.12816/0003922 ◽

2012 ◽

Vol 16 (1) ◽

pp. 99-113

Author(s):

A. A. Hamed ◽

Naglaa A. S. Muhanna ◽

A. M. Abd Rabou

Keyword(s):

Rust Resistance ◽

Snap Bean ◽

Inheritance Of Rust Resistance

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THE INHERITANCE OF RUST RESISTANCE: VII. THE INHERITANCE OF RESISTANCE TO RACES 15B AND 56 OF STEM RUST IN ELEVEN COMMON WHEAT VARIETIES OF DIVERSE ORIGIN

Canadian Journal of Plant Science ◽

10.4141/cjps61-087 ◽

1961 ◽

Vol 41 (3) ◽

pp. 587-601 ◽

Cited By ~ 7

Author(s):

D. R. Knott ◽

I-Sun Shen

Keyword(s):

Stem Rust ◽

Rust Resistance ◽

Inheritance Of Resistance ◽

Susceptible Parent ◽

Wheat Varieties ◽

New Genes ◽

New Gene ◽

Diverse Origin ◽

Inheritance Of Rust Resistance ◽

Moderate Resistance

In an attempt to locate new genes for stem rust resistance, 11 varieties of wheat of as diverse origins as possible were studied. Each variety was backcrossed to the susceptible parent Marquis. The F2 families from the backcrosses were tested with races 15B and 56, and the inheritance of resistance determined. The genes carried by each variety were identified from the results of test crosses with varieties carrying known genes and with lines of Marquis carrying single genes for resistance. Most of the resistance present in the 11 varieties could be accounted for on the basis of known genes (Sr6 – Sr10). However, at least one new gene conditioning moderate resistance to race 15B, and possibly one or more new genes conditioning moderate resistance to race 56, were identified.

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