Resistance to Fungal Diseases in Hybrid Progeny from Crosses between Common Wheat Variety Saratovskaya 29 and the Amphidiploid Triticum timopheevii/Triticum tauschii (AAGGDD)

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.

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The study of agronomical traits determining productivity of Triticum aestivum/Triticum timopheevii introgression lines with resistance to fungal diseases

Vavilov Journal of Genetics and Breeding ◽

10.18699/vj16.120 ◽

2016 ◽

Vol 20 (3) ◽

pp. 311-319 ◽

Cited By ~ 1

Author(s):

I. N. Leonova ◽

E. B. Budashkina

Keyword(s):

Triticum Aestivum ◽

Introgression Lines ◽

Fungal Diseases ◽

Triticum Timopheevii ◽

Agronomical Traits ◽

Resistance To Fungal Diseases

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Tetraploid wheat species Triticum timopheevii and Triticum militinae in common wheat improvement

Acta Agronomica Hungarica ◽

10.1556/aagr.50.2002.4.9 ◽

2002 ◽

Vol 50 (4) ◽

pp. 463-477 ◽

Cited By ~ 7

Author(s):

K Järve ◽

I. Jakobson ◽

T. Enno

Keyword(s):

Disease Resistance ◽

Common Wheat ◽

Tetraploid Wheat ◽

Introgressive Hybridization ◽

Fungal Diseases ◽

Triticum Timopheevii ◽

Wheat Species ◽

Major Genes ◽

Wheat Improvement ◽

Unknown Species

Timopheevii wheats are discussed as donors for improving the disease resistance of common wheat. Attention is paid to the comparison of the morphological and chromosomal characteristics of Triticum timopheevii and T. militinae, their crossability with T. aestivum and their response to fungal diseases. The possible origin of T. militinae from an introgressive hybridization between T. timopheevii and an unknown species is discussed. Major genes for resistance to various fungal diseases, transferred to common wheat from T. timopheevii, are listed.

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

Canadian Journal of Botany ◽

10.1139/b58-030 ◽

1958 ◽

Vol 36 (3) ◽

pp. 351-355 ◽

Cited By ~ 1

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.

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