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  • Articles  (19)
  • barley  (19)
  • Animals
  • Chemistry
  • 1975-1979  (19)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (19)
  • 1
    Electronic Resource
    Electronic Resource
    Partial resistance of barley to leaf rust, Puccinia hordei. III. The inheritance of the host plant effect on latent period in four cultivars (1976)
    Springer
    Euphytica 25 (1976), S. 241-248 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; Puccinia hordei ; leaf rust ; latent period ; partial resistance ; slow rusting ; minor genes ; polygenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The latent period (LP) in the barley-leaf rust relationship is an important component of the partial resistance complex. The inheritance of the host plant effect on LP was studied in five crosses between four cultivars. The LP, effectuated by the susceptible cultivars L94 and L92, were 8.0 and 8.6 days resp., those of the resistant cultivars Minerva (Mi) and Vada (Va) 16.9 and 17.1 days resp. The mean F1 and F2 values of the crosses L92×L94 and Mi x Va were intermediate between the parental ones. The variances of the F2's were slightly larger than those of the parents and the F1's indicating some segregation. In the crosses between a susceptible and a resistant cultivar the F1 value was half way between the mid-parent and susceptible parent value. The F2 mean lay approximately half way between the mid-parent and F1 value, with a distribution positively skewed and slightly bimodal. There was no transgression, in fact not even the parental values were recovered among nearly 500 F2 plants. The F3-lines of the crosses between susceptible and resistant cultivars showed within line variances from as low as the parental values to as high as or higher than those of the F2. In hte F3's the parental values could be recovered although no transgression occurred. L94 is supposed to carry no genes effecting a longer LP. The long LP of Mi and Va, assuming no linkage, is thought to be effectuated by the cumulative action of a recessive gene with a fairly large effect and some four to five minor genes with additive inheritance. One of these minor genes is supposed to be carried by L92, while Mi and Va are thought to differ for one minor gene only. In case linkage exists, the number of minor genes involved could be higher.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041554
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  • 2
    Electronic Resource
    Electronic Resource
    Frequency of control plots in screening nurseries for protein content (1976)
    Springer
    Euphytica 25 (1976), S. 387-391 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Hordeum vulgare ; barley ; screening nursery ; distance between control plots ; protein content ; correlation coefficient
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Correlation coefficients were calculated in two seasons, between protein content of control plots of ‘Kyperounda’ durum wheat and ‘Athenais’ barley sown at distances of from 0.6 m to 68.4 m. Simple correlation coefficients were high (0.737, 0.710 and 0.311) and significant at the 1% level of probability for plots 0.6 m apart, but decreased rapidly with increasing distances between plots. The correlation in four nurseries was significant for plots 7.2 m, 4.2m, 4.2 m and 1.8 m apart. It was concluded that a control plot provides a fairly good measure of the protein content of adjacent plots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041571
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  • 3
    Electronic Resource
    Electronic Resource
    The production and behaviour of hexaploid hybrids between Hordeum vulgare and H. Bulbosum (1976)
    Springer
    Euphytica 25 (1976), S. 621-631 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; Hordeum bulbosum ; barley ; bulbous barley grass ; interspecific hybrids ; colchicine treatments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary To produce hexaploid (or other polyploid) hybrids, diploid or tetraploid Hordeum vulgare was crossed with hexaploid or octoploid H. bulbosum, and perennial triploid hybrids between the two species were treated with colchicine. The crosses did not yield viable plants: seedset was low, the seed aborted and embryo culture was unsuccessful. The colchicine treatments geve rise to plants in which hexaploid chromosome numbers were observed. At the hexaploid level chromosomal instability occurred, resulting in chromosome elimination. The colchicine-treated triploid hybrids showed in the first years after the treatment better fertility after open flowering than untreated plants, but the level of fertility remained very low. The offspring consisted of haploid, diploid and approximately triploid plants like H. vulgare, tetraploid and approximately tetraploid plants like H. bulbosum, and plants with hybrid morphology and unstable chromosome number, which were highly sterile. Thus the crossing barrier between H. vulgare and H. bulbosum could not be broken down at higher ploidy level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041599
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  • 4
    Electronic Resource
    Electronic Resource
    The genetics of seedling resistance to leaf rust, Puccinia hordeiOtth. in some spring barley cultivars (1976)
    Springer
    Euphytica 25 (1976), S. 249-254 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; Puccinia hordei ; leaf rust ; seedling resistance ; hypersensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The three Dutch isolates studied carried virulence genes against the resistance genes Pa, Pa-2, Pa-4 and Pa-5, substantiating the widespread occurrence of these virulences in Western Europe as reported by others. The cultivars Cebada Capa, La Estanzuela, Gondar and Dabat carry the same dominant to semi-dominant gene, which is also found in Forrajera Klein and H2212. It is proposed to designate this gene Pa-7. This gene segregated independently from the Pa-3 gene in Rika x (Baladi x Rika) substantiating the data of Johnson (1968), but disagreeing with those of Roane & Starling (1970). EP 75 seems to carry a single dominant or semi-dominant gene conferring an intermediate resistance to the isolates used. This gene, tentatively designated as Pa-z, is different from the Pa, Pa-2, Pa-4, Pa-5 and Pa-7 genes. The intermediate resistance of Monte Christo is probably based on gene(s) different from EP 75.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041555
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  • 5
    Electronic Resource
    Electronic Resource
    A proposal for increased research on chemical induction of fertility in genetic male-sterile barley (1978)
    Springer
    Euphytica 27 (1978), S. 109-111 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; fertility restoration ; genetic male sterility ; gibberellic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary We propose that research be increased on chemical restoration of fertility to the genetic male steriles of barley. Seed harvested from male-sterile plants restored to fertility can then be planted as the female for hybrid barley production. Male fertility has been resotred in male-sterile or gynoecious plants by chemicals in many species, but a satisfactory method has not been developed in barley. Male-sterile mutants that self and mutant-chemical combinations with fertility persisting into the second generation should be avoided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039124
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  • 6
    Electronic Resource
    Electronic Resource
    Factors affecting genotypic and environmental variance for crude protein content in cereals (1978)
    Springer
    Euphytica 27 (1978), S. 117-126 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; Triticum aestivum ; Triticum durum ; wheat ; genotypic variance ; environmental variance ; protein content ; nitrogen fertilizer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of N fertilizer, irrigation and location on genotypic and environmental variances of barley and wheat varieties were studied in a series of trials. Genotypic variance for crude protein content, as well as for grain yield, tended to be higher under high N fertilizer rate (80 kg N/ha). The effect of N fertilizer rate on environmental variance varied with variety and location. Increase in crude protein content resulted in decrease in environmental variance for only a few of the varieties tested. The effect of quantity of irrigation water on genotypic and environmental variance for crude protein content was small.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039126
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  • 7
    Electronic Resource
    Electronic Resource
    Partial resistance of barley to leaf rust, Puccinia hordei. IV. Effect of cultivar and development stage on infection frequency (1977)
    Springer
    Euphytica 26 (1977), S. 249-255 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; Puccinia hordii ; leaf rust ; cultivars ; infection frequencies ; latent period ; partial resistance ; non-hypersensitive resistance ; slow rusting resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The cultivar effect on infection frequency (IF) was studied in the seedling and adult plant stages of 15 spring barley cultivars. In both stages the cultivar effects were highly significant. The cultivars L94 and Vada represented the extremes. Vada having about 2 1/2 times fewer uredosori than L94. Between cultivars and development stage clear interactions occurred. Pauline f.i. had the same low IF as Vada in the seedling stage, but in the adult plant stage its IF was about 70% higher. Also other effects could influence the cultivar effects. Increasing leaf age appears to increase IF. The cultivar effect also seemed to depend on the level of IF. At high levels the cultivars differed far less than at low levels of IF. The cultivar effect on IF appeared correlated with partial resistance in the field (r=0.7) through a high correlation with the cultivar effect on latent period (r=0.8).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026985
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  • 8
    Electronic Resource
    Electronic Resource
    Genotype-environment interaction effects in F1 barley hybrids (1977)
    Springer
    Euphytica 26 (1977), S. 67-73 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; F1 hybrids ; genotype-environment interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Genotype-environment interactions in F1 hybrids between a selection of current commereial varicties as male parents and a balanced tertiary trisomic male-sterile female were investigated. Sixteen environments were employed, comprising eight treatments in each of two seasons. Hybrid stabilities in terms of yield response to changing environments, were found to be very similar to those of the parents, however hybrid yields exceeded parental yields in all but one instance. A heterotic effect for plant height was also observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00032070
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  • 9
    Electronic Resource
    Electronic Resource
    Fitness and yield components associated with genetic changes at the aleurone color loci in barley (1977)
    Springer
    Euphytica 26 (1977), S. 797-804 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; aleurone color ; fitness ; yield ; isolines ; population dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Genotypic frequency data at two loci governing blue vs. white aleurone color in barley showed that composite cross (CC) populations grown at Davis varied in the changes in allelic frequencies as well as heterozygosity levels. The blue class increased steadily over 20 generations in CC V and CC XXI along with an excess of heterozygotes over expected under high selfing rates, fluctuated without a directional shift in CC XIV, and declined in CC XVI. Utilizing the xenia feature of this character, nearly 100 Bl/bl Bl2/bl2 individuals were randomly drawn from the CC XVI and CC XXI populations and used in a paired-plot study of some yield components for comparing the blue and white isogenic classes within lines in the varied genetic backgrounds of different lines. For seed number blue vs. white isogenic class differences were significant only in one out of four populations (CC XXI-F8) whereas differences among the lines were significant in CC XVI-F12, CC XXI-F3 and CC XXI-F8. Thus, specific locus effects were relatively much smaller than the genetic background component although overall the genotypic frequency changes at the aleurone color loci were found to be consistent with the relative average seed output per plant in the three genotypic classes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021709
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  • 10
    Electronic Resource
    Electronic Resource
    Grain yield and its components in spring barley under row and hill plot conditions (1977)
    Springer
    Euphytica 26 (1977), S. 521-526 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum vulgare ; barley ; haploid barley ; yield components ; hill plots
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Twenty homozygous barley lines were grown in row and hill plots at two locations in Ontario in 1973. The hill plots were of two spacings −30×30 cm and 45×45 cm between hills. Within each spacing, three seeding rates were used i.e. 15, 25 and 35 seeds per hill. Grain yield and three of its components, namely; number of seeds per spike (NSS), number of spikes per plot (NSP) and seed weight (SW) were studied. It was concluded that both NSS and SW could be evaluated in hill plots. NSS was found to be an important component of grain yield and its relationship with grain yield was unaffected by plot types and locations. SW also remained unaffected by plot types and seeding rates but as a component of grain yield it was the least important of the three components measured. The correlation between SW and grain yield could be changed by locations. NSP was as important as NSS as a component of grain yield, and was highly correlated with grain yield. Unlike NSS, NSP could not be efficiently evaluated in hill plots since its correlation between row and hill plots was generally lower.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021677
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