Cytogenetics of Elymus sibiricus and Its Hybrids with Agropyron tauri, Elymus canadensis, and Agropyron caninum

1974 ◽  
Vol 135 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Douglas R. Dewey

Botany ◽  
2012 ◽  
Vol 90 (6) ◽  
pp. 407-421 ◽  
Author(s):  
Bernard R. Baum ◽  
Tara Edwards ◽  
Ekaterina Ponomareva ◽  
Douglas A. Johnson

Elymus canadensis L. and Elymus sibiricus L. are difficult to separate by morphology. The latter is found mainly in Asia and extends into northern North America; the former is confined to North America. We obtained the DNA sequences of 135 5S rDNA units collected from 19 localities throughout their respective ranges. The results of statistical parsimony, analysis of molecular variance, and sequence polymorphism analyses show that the two taxa are not conspecific.



1978 ◽  
Vol 56 (8) ◽  
pp. 901-915 ◽  
Author(s):  
J. Nielsen

Thirty-seven species of the genera Aegilops, Agropyron, Elymus, Eremopyrum, Haynaldia, Hordeum, Secale, and Taeniatherum in the tribe Triticeae and six species of the genus Lolium in the tribe Festuceae were tested for their reaction to loose smut of barley, Ustilago nuda, and loose smut of wheat, U. tritici. One new host for U. nuda was found: Hordeum violaceum. Fifteen new hosts for U. tritici were found: Aegilops caudata, Ae. ovata, Ae. triuncialis, Agropyron caninum. A. fibrosum, A. scabrifolium, Elymus canadensis, E. dahuricus, E. virginicus. Haynaldia villosa, Hordeum brachyantherum, H. jubatum, H. marinum, Secale silvestre, and Taeniathernm crinitum. Six new hosts for both U. nuda and U. tritici were found and they are the first known common hosts for these fungi: Agropyron scabriglume. A. striatum, A. tsukushiense var. transiens, Hordeum bogdanii, H. brevisubulatum, and H. compressum. On all these hosts, the sori of U. nuda were covered by a thin membrane or peridium whereas the sori of U. tritici were naked. Spores formed on all hosts germinated in the manner typical for the species used for inoculation. The wild barley common in Canada. Hordeum jubatum, differentiated between races of loose smut of wheat, U. tritici. Six species of Lolium were resistant to U. nuda and U. tritici.



Author(s):  
J. E. M. Mordue

Abstract A description is provided for Urocystis occulta. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Secale cereale; occasionally recorded on other Gramineae including Agropyron caninum, A. inerme, Elymus canadensis, E. triticoides, Hordeum distichon, Lolium rigidum. DISEASE: Stripe or flag smut of rye. GEOGRAPHICAL DISTRIBUTION: Europe (except the Iberian peninsula), USSR, Turkey; Canada and USA; Australia. TRANSMISSION: Seed-borne. Rarely, soil-borne, but does not normally survive more than a few months in soil (34, 145; 30, 563; 16, 92; 15, 644).



1961 ◽  
Vol 88 (3) ◽  
pp. 153 ◽  
Author(s):  
Wray M. Bowden ◽  
W. J. Cody
Keyword(s):  


Hereditas ◽  
2017 ◽  
Vol 154 (1) ◽  
Author(s):  
Xuhong Zhao ◽  
Junchao Zhang ◽  
Zongyu Zhang ◽  
Yanrong Wang ◽  
Wengang Xie


1985 ◽  
Vol 27 (4) ◽  
pp. 387-392 ◽  
Author(s):  
George Fedak

Hybrids were obtained by pollinating Hordeum vulgare cv. Betzes with Agropyron caninum (4x) and A. dasystachyum (4x) at frequencies of 1.4 and 6.1% of pollinated florets, respectively. The hybrids were sterile and phenotypically resembled the paternal parent, except for floret structure which was intermediate between the parental types. Chromosome pairing at meiosis was very low and thus provided no indication of homoeology between parental genomes. Abnormal meiotic chromosome behavior in meiocytes that occurred in sectors on the 'Betzes' × A. dasystachyum hybrid was attributed to abnormal spindle fibre function.Key words: intergeneric hybrids, Hordeum vulgare, Agropyron caninum, Agropyron dasystachyum.





2014 ◽  
Vol 6 (4) ◽  
pp. 861-864 ◽  
Author(s):  
Yunting Lei ◽  
Yanyan Zhao ◽  
Feng Yu ◽  
Yuan Li ◽  
Quanwen Dou


Euphytica ◽  
1990 ◽  
Vol 45 (3) ◽  
pp. 217-222
Author(s):  
C. H. Park ◽  
P. D. Walton


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