Effects of D-genome chromosomes on crossability of hexaploid triticale (X Triticosecale Wittmack) with maize

1997 ◽  
Vol 116 (4) ◽  
pp. 387-389 ◽  
Author(s):  
M. N. Inagaki ◽  
W. H. Pfeiffer ◽  
M. Mergoum ◽  
A. Mujeeb-Kazi ◽  
A. J. Lukaszewski
1985 ◽  
Vol 65 (3) ◽  
pp. 487-490 ◽  
Author(s):  
A. E. LIMIN ◽  
J. DVORAK ◽  
D. B. FOWLER

The excellent cold hardiness of rye (Secale cereale L.) makes it a potential source of genetic variability for the improvement of this character in related species. However, when rye is combined with common wheat (Triticum aestivum L.) to produce octaploid triticale (X Triticosecale Wittmack, ABDR genomes), the superior rye cold hardiness is not expressed. To determine if the D genome of hexaploid wheat might be responsible for this lack of expression, hexaploid triticales (ABR genomes) were produced and evaluated for cold hardiness. All hexaploid triticales had cold hardiness levels similar to their tetraploid wheat parents. Small gains in cold hardiness of less than 2 °C were found when very non-hardy wheats were used as parents. This similarity in expression of cold hardiness in both octaploid and hexaploid triticales indicates that the D genome of wheat is not solely, if at all, responsible for the suppression of rye cold hardiness genes. There appears to be either a suppressor(s) of the rye cold hardiness genes on the AB genomes of wheat, or the expression of diploid rye genes is reduced to a uniform level by polyploidy in triticale. The suppression, or lack of expression, of rye cold hardiness genes in a wheat background make it imperative that cold-hardy wheats be selected as parents for the production of hardy triticales.Key words: Triticale, Secale, winter wheat, cold hardiness, gene expression


Caryologia ◽  
2006 ◽  
Vol 59 (2) ◽  
pp. 112-115
Author(s):  
Ordónez Adriana ◽  
Lorena Elizabeth Torres ◽  
Beatriz Costero ◽  
Ricardo Maich

BMC Genomics ◽  
2012 ◽  
Vol 13 (1) ◽  
pp. 235 ◽  
Author(s):  
Katharina V Alheit ◽  
Hans Maurer ◽  
Jochen C Reif ◽  
Matthew R Tucker ◽  
Volker Hahn ◽  
...  

Author(s):  
Mohamed Mergoum ◽  
Suraj Sapkota ◽  
Ahmed ElFatih A. ElDoliefy ◽  
Sepehr M. Naraghi ◽  
Seyed Pirseyedi ◽  
...  

2011 ◽  
Vol 41 (2) ◽  
pp. 200-204 ◽  
Author(s):  
Fábio Steiner ◽  
Silvia Sanielle Costa de Oliveira ◽  
Cibele Chalita Martins ◽  
Sihélio Júlio Silva Cruz

Dentro de um programa de controle de qualidade, a avaliação do vigor de sementes é fundamental e necessária para o sucesso da produção. Este trabalho teve como objetivo avaliar a eficiência de diferentes testes de vigor na avaliação da qualidade fisiológica de sementes de triticale (X. triticosecale Wittmack), buscando a diferenciação de lotes. Cinco lotes da cultivar 'IPR 111' foram submetidos ao teste de germinação, primeira contagem, teste de frio, condutividade elétrica (50 sementes 50mL-1 de água; 25°C 24h-1), lixiviação de potássio (50 sementes 75mL-1 de água; 25°C 3h-1), envelhecimento acelerado (43°C 48h-1) e teor de água. O teste de condutividade elétrica e lixiviação de potássio são eficientes na diferenciação do vigor de lotes de sementes de triticale.


1994 ◽  
Vol 8 (1) ◽  
pp. 119-123 ◽  
Author(s):  
Alan C. York ◽  
Stewart M. Turner ◽  
Ronald E. Jarrett

The response of ‘Florico,’ ‘Victoria,’ and 'Stan II’ triticale to 2,4-D, dicamba, 2,4-D plus dicamba, diclofop, and thifensulfuron plus tribenuron applied POST during the tillering stage was examined. At rates twice those recommended for application to wheat, Victoria and Stan II were not injured, and injury to Florico was less than 10%. None of the herbicides or combinations adversely affected plant height at maturity, tiller or spike production, grain weight/spike, kernel weight, kernels/spike, yield, or test weight of any cultivar. Cultivars varied in tiller production, height, yield, test weight, kernel weight, and kernels/spike.


1994 ◽  
Vol 74 (4) ◽  
pp. 811-813 ◽  
Author(s):  
J. G. McLeod ◽  
R. M. DePauw ◽  
J. M. Clarke ◽  
T. F. Townley-Smith

AC Copia, a cultivar of spring triticale (X Triticosecale Wittmack), was developed at the Research Station, Research Branch, Agriculture and Agri-Food Canada, Swift Current, SK. It is widely adapted to the Prairie Provinces of Western Canada. AC Copia represents an improvement in test weight over other currently available Canadian cultivars of triticale. It is very resistant to the prevalent races of leaf rust, stem rust and common bunt, and moderately resistant to common root rot. Key words: Cultivar description, test weight, triticale (spring), X Triticosecale Wittmack


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