COMPARISON OF THE CROSSABILITY OF RYE (SECALE CEREALE) AND HORDEUM BULBOSUM ONTO WHEAT (TRITICUM AESTIVUM)

1981 ◽  
Vol 23 (1) ◽  
pp. 81-88 ◽  
Author(s):  
D. E. Falk ◽  
K. J. Kasha
Keyword(s):  
Triticum Aestivum ◽  
Secale Cereale ◽  
Seed Set ◽  
Genetic System ◽  
Triticum Aestivum L ◽  
Hordeum Bulbosum ◽  
Factors Influencing ◽  
Main System ◽  
Wheat Lines ◽  
System Operating

Fifty-six wheat (Triticum aestivum L.) lines representing a wide diversity of germplasm were screened for crossability with rye. Seed set values ranged from 0.0% to 95.4% of the florets pollinated. Twenty-eight of these wheat lines representing the range of crossability with rye were then pollinated with tetraploid Hardeum bulbosum L. Seed set ranged from 0.0% to 32.2%. Those wheats giving seed set with H. bulbosum generally had medium to high crossability with rye. A high correlation (r = 0.75) was obtained for crossability of rye and H. bulbosum on wheat, indicating that the main genetic system (Kr1 and Kr2) governing crossability with rye is also the main system operating in crosses with H. bulbosum. Evidence for additional factors influencing crossability and for differences between rye and H. bulbosum is provided. Hybrids between wheats having different crossability levels exhibited intermediate crossability levels with rye but very low crossability with H. bulbosum. Hordeum bulbosum genotypes differ in their ability to effect seed set.

Cross-incompatibility of common wheat with rye: effect of varying the day of pollination on seed set and development

1978 ◽  
Vol 56 (23) ◽  
pp. 3000-3007 ◽  
Author(s):  
Julian B. Thomas ◽  
R. Glenn Anderson
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Secale Cereale ◽  
Seed Set ◽  
Triticum Aestivum L ◽  
Hybrid Seed ◽  
Intergeneric Cross ◽  
Secale Cereale L ◽  
Wheat Spike

Varieties of common wheat (Triticum aestivum L. em. Thell.) of low wheat–rye crossability showed increased seed set if pollinated with cultivated rye (Secale cereale L.) before the wheat spike attained maximum receptivity to wheat pollen (before the stage of first anthesis). After first anthesis the development of hybrid seed progressively deteriorated with increasing lateness of pollination. Premature or 'bud' pollination may be a useful approach for overcoming intergeneric cross-incompatibility barriers in the Triticineae.

The effect of rye genotype on wheat–rye crossability and on the development of F1 seed

1983 ◽  
Vol 25 (6) ◽  
pp. 668-670 ◽  
Author(s):  
Graham J. Scoles
Keyword(s):  
Triticum Aestivum ◽  
Secale Cereale ◽  
Seed Set ◽  
Triticum Aestivum L ◽  
Inbred Lines ◽  
Hybrid Seed ◽  
Secale Cereale L

Five inbred lines of rye (Secale cereale L.) and an open-pollinated rye cultivar were used to pollinate wheat (Triticum aestivum L.) cultivars of differeing crossability. No hybrid seed was produced with the cultivar of low crossability, but with the highly crossable cultivar an average seed set of 65% was obtained. Significant differences in terms of seed set and weight of F1 seed were detected among the inbreds.

THE INTERACTION OF GENETICALLY CONTROLLED CROSSABILITY IN WHEAT AND RYE

1981 ◽  
Vol 23 (1) ◽  
pp. 27-32 ◽  
Author(s):  
D. G. Tanner ◽  
D. E. Falk
Keyword(s):  
Triticum Aestivum ◽  
Random Sample ◽  
Secale Cereale ◽  
Triticum Aestivum L ◽  
Secale Cereale L ◽  
Wheat Lines ◽  
Inhibitor Genes

A random sample of nine inbred (S8) rye lines (Secale cereale L.) exhibited significant differences in crossability with several wheat (Triticum aestivum L.) lines. Results obtained from crosses among selected wheat and rye lines indicate that the crossability system in rye may interact with the Kr loci controlling intergeneric crossability in wheat. Certain rye lines are capable of partially circumventing one or both of the known crossability inhibitor genes in homozygous wheat lines. Crossability in rye appears to be simply inherited with high crossability being dominant.

Construction of comparative genetic maps of two 4Bs.4Bl-5Rl translocations in bread wheat (Triticum aestivum L.)

Genome ◽  
2006 ◽  
Vol 49 (7) ◽  
pp. 729-734 ◽  
Author(s):  
R C Leach ◽  
I S Dundas ◽  
A Houben
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Rflp Analysis ◽  
Triticum Aestivum L ◽  
Genetic Maps ◽  
Homoeologous Group ◽  
Group 4 ◽  
Translocation Breakpoints ◽  
Group 5 ◽  
Wheat Lines

The physical length of the rye segment of a 4BS.4BL–5RL translocation derived from the Cornell Wheat Selection 82a1-2-4-7 in a Triticum aestivum 'Chinese Spring' background was measured using genomic in situ hybridization (GISH) and found to be 16% of the long arm. The size of this translocation was similar to previously published GISH measurements of another 4BS.4BL–5RL translocation in a Triticum aestivum 'Viking' wheat background. Molecular maps of both 4BS.4BL–5RL translocations for 2 different wheat backgrounds were developed using RFLP analysis. The locations of the translocation breakpoints of the 2 4BS.4BL–5RL translocations were similar even though they arose in different populations. This suggests a unique property of the region at or near the translocation breakpoint that could be associated with their similarity and spontaneous formation. These segments of rye chromosome 5 also contain a gene for copper efficiency that improves the wheat's ability to cope with low-copper soils. Genetic markers in these maps can also be used to screen for copper efficiency in bread wheat lines derived from the Cornell Wheat Selection 82a1 2-4-7.Key words: Triticum aestivum, wheat–rye translocation, homoeologous group 4, homoeologous group 5, GISH, comparative map, copper efficiency, hairy peduncle.

scholarly journals Tolerância de cultivares de trigo, triticale e centeio em diferentes níveis de alumínio em solução nutritiva

Bragantia ◽  
1984 ◽  
Vol 43 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Carlos Eduardo de Oliveira Camargo ◽  
João Carlos Fenício
Keyword(s):  
Triticum Aestivum ◽  
Secale Cereale ◽  
Triticum Durum ◽  
Triticum Aestivum L ◽  
Secale Cereale L

Foram estudados sete cultivares de trigo (Triticum aestivum L. ), um de trigo duro (Triticum durum L.), sete de triticale e dois de centeio (Secale cereale L.), em soluções nutritivas contendo quatro níveis de alumínio tóxico. A tolerância foi medida pela capacidade de as raízes primárias continuarem a crescer em soluçâo sem alumínio após um período de 48 horas em solução contendo uma concentração conhecida de alumínio. A temperatura de 28 ± 1 °C foi mantida constante nas soluções durante o experimento. Os cultivares de centeio, Goyarowo e Branco, foram tolerantes a 20mg/ litro de Al3+; os de trigo, Siete Cerros, Tobari-66 e Cocorit, foram sensíveis a 5mg/lítro de alumínio, porém BH-1146, IAC-5, BR-1 e IAC-18 foram tolerantes e, IAC-17, moderadamente tolerante a essa concentração de alumínio; os cultivares de triticale, PFT-763, TCEP-77142, PFT-764, TCEP-75709, Cynamon, TCEP-77138 e TCEP-77136, foram tolerantes a 5mg/litro de Al3+. Todos os cultivares de trigo e triticale foram sensíveis a 10mg/litro de Al3+.

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