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  • 1
    Electronic Resource
    Electronic Resource
    Evaluation of Aegilops tauschii Cosson for preharvest sprouting tolerance (1998)
    Springer
    Genetic resources and crop evolution 45 (1998), S. 495-498 
    Details
    ISSN: 1573-5109
    Keywords: Aegilops tauschii ; (syn: Triticum tauschii) ; preharvest sprouting ; tolerance wheat improvement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract On day 21, total germination percentages of threshed seeds of Ae. tauschii ranged from 0.0 to 92.6, indicating a large variation in preharvest sprouting tolerance. Out of 46 Ae. tauschii accessions, seven had a germination index lower than ten, which indicates good tolerance to preharvest sprouting and usefulness for common wheat (Triticum aestivum L.) improvement. The variety tauschii showed a germination percentage and a germination index much higher than that of var. strangulata. Furthermore, the tough and tenacious glumes of Ae. tauschii also had an effect on tolerance to preharvest sprouting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008674432523
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  • 2
    Electronic Resource
    Electronic Resource
    Sources of resistance to head scab in Triticum (1997)
    Springer
    Euphytica 94 (1997), S. 31-36 
    Details
    ISSN: 1573-5060
    Keywords: Triticum ; Fusarium graminearum ; resistance ; head scab ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Multi-floret and single-floret injection inoculation methods were used to test 1076 accessions of Triticum for resistance to initial infection and resistance to pathogen spread within spike tissue respectively. The data obtained between years or inoculation dates were comparatively similar and were little influenced by climatic factors, especially humid condition. All the tested materials uniformly exhibited susceptibility to initial infection, but there were great differences in resistance to spread among species or cultivars. The diploid and tetraploid wheats were severely susceptible. Only 30 genotypes of common wheat of T. aestivum concv. vulgare showed high resistance to spread. The highest frequency of high spread resistance existed in these landraces which were distributed in Zhejiang, Hubei, Hunan, Jiangsu provinces and Shanghai City, Guizhou, Sichuan and Yunnan provinces ranked second. The majority of wheat landraces from Hebei, Shanxi, Shaanxi Province and Beijing City showed susceptibility or high susceptibility. No resistance was found in Tibetian wheats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002982005541
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  • 3
    Electronic Resource
    Electronic Resource
    Crossability of tetraploid wheat landraces native to Sichuan, Shaanxi, Gansu and Xinjiang provinces, China with rye (1998)
    Springer
    Genetic resources and crop evolution 45 (1998), S. 57-62 
    Details
    ISSN: 1573-5109
    Keywords: crossability ; landrace ; rye ; Secale cereale ; Triticum turgidum ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The crossability percentages of 131 landraces of wheat (Triticum turgidum L.) native to Sichuan, Shaanxi, Gansu and Xinjiang provinces of China with rye (Secale cereale L.) were tested. 45 landraces showed crossability percentages higher than 5% with 5 landraces expressing crossability percentages over 60%. The geographical distribution of crossability of these tetraploid wheat landraces was reported. Some utilization of high crossability resources was also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008669429068
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluation of shape Aegilops tauschii Coss for resistance to physiological strains CYR30 and CYR31 of wheat stripe rust in China (1998)
    Springer
    Genetic resources and crop evolution 45 (1998), S. 395-398 
    Details
    ISSN: 1573-5109
    Keywords: Aegilops tauschii ; stripe rust ; rust resistance ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Stripe rust is one of the most serious diseases of wheat in China. Two new stripe rust physiological strains CYR30 (Inter. name: 175 E 191) and CYR31 (Inter. name: 239 E 175) have become the dominant and epidemic physiological strains since 1994 in China. Resistance to these strains of 48 Ae. tauschii accessions was evaluated at the seedling and adult stages. Out of 48, 28 accessions displayed seedling and adult resistance. All of the Chinese Ae. tauschii accessions were susceptible at seedling and adult stages. Seedling resistance was highly related to adult resistance in Ae. tauschii. The new genetic resources of resistance to CYR30 and CYR31 could be incorporated into commercial wheat varieties for wheat resistance breeding by direct hybridization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008651901159
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  • 5
    Electronic Resource
    Electronic Resource
    The chromosomal locations of high crossability genes in tetraploid wheat Triticum turgidum L. cv. Ailanmai native to Sichuan, China (1999)
    Springer
    Euphytica 108 (1999), S. 79-82 
    Details
    ISSN: 1573-5060
    Keywords: aneuploid analysis ; crossability ; Chineseindigenous wheat ; rye ; Triticum turgidum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Chromosomal locations of crossability genes in tetraploid wheat Ailanmai with high crossability native to Jianyang of Sichuan province, China, was determined by aneuploid analysis employing the D-genome chromosome substitution lines of Langdon durum wheat and monosomic lines of common wheat, Abbondanza. High crossability of Ailanmai was attributed to recessive crossability alleles on chromosomes 1A, 6A and 7A. The effects of chromosomes 7A and 1A were stronger than chromosome 6A. These results indicated that high crossability in Chinese tetraploid wheat cv. Ailanmai and Chinese hexaploid wheat is controlled by different genetic systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003691925501
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  • 6
    Electronic Resource
    Electronic Resource
    Evaluation of Roegneria for resistance to head scab caused by Fusarium graminearum Schwabe (1997)
    Springer
    Genetic resources and crop evolution 44 (1997), S. 211-215 
    Details
    ISSN: 1573-5109
    Keywords: Fusarium graminearum ; resistance ; Roegneria ; scab ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract 71 accessions from 13 Roegneria species were evaluated for resistance to wheat scab. The results showed that 31 of the 71 accessions possessed high resistance (HR) to initial infection and high resistance (HR) to pathogen spread. The disease spread from inoculated floret to head rachis was not observed, and the incidence of head infection were lower under natural than under artificial inoculation conditions. The intergeneric hybrid F1 of Roegneria tsukushiensis (Honda) B.R. Lu, Yen et J.L. Yang. var. transiens (Hack.) B.R. Lu, Yen et J.L. Yang × Hordeum vulgare Linn. exhibited resistance (R) to pathogen invasion and high resistance (HR) to spread. Therefore, Roegneria could be used as scab resistant resources in cereal breeding. In addition, the relatioship between its resistance and ecological environments where Roegneria was distributed was discussed in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008643617661
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