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  • wheat  (11)
  • Springer  (11)
  • Elsevier
  • 2015-2019
  • 1985-1989  (11)
  • 1955-1959
  • 1986  (11)
Collection
Keywords
Publisher
  • Springer  (11)
  • Elsevier
Years
  • 2015-2019
  • 1985-1989  (11)
  • 1955-1959
Year
  • 1
    Electronic Resource
    Electronic Resource
    Stripe rust reactions of Australasian wheats (1986)
    Springer
    Euphytica 35 (1986), S. 593-602 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Puccinia striiformis ; stripe rust ; yellow rust ; Australia ; New Zealand ; numerical classification ; ordination ; minimum spanning tree
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Seedling and field reactions to four European races of stripe rust were determined for 254 wheat cultivars, mostly from Australia and New Zealand. Numerical analyses of the data employed a divisive classification procedure with termal reallocation to form 10 groups which were then further classified, ordinated and diagnosed by several procedures. The groups formed ranged from one comprising four wheats with low seedling reactions to all four rust strains and mean field rust of only 1.0%, to one comprising 105 wheats with high seedling reactions and mean field rust of 64.7%. Groups of cultivars with intermediate levels of rust resistance were classified both on relative level of overall rust and on differential reactions to rust strains. One group of 13 cultivars had moderately high seedling reactions but averaged only 1.5% rust in the field. Seedling response to gibberellic acid (GA) was also measured and diagnosed as an external attribute, along with grain type and region of origin. Principal co-ordinate analysis revealed that greater resistance to stripe rust was associated with the insensitivity to GA typical of semidwarf wheats and with an origin in northern Australia, where semidwarf wheats have been most used in the breeding program. In terms of numerical analysis of disease data in plant breeding programs, the study highlighted the advantages of using divisive classification with terminal reallocation of group members.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021868
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  • 2
    Electronic Resource
    Electronic Resource
    Inheritance of biotype E greenbug resistance in bread wheat CI 17882 and its relationship with wheat streak mosaic virus resistance (1986)
    Springer
    Euphytica 35 (1986), S. 615-620 
    Details
    ISSN: 1573-5060
    Keywords: Triticum speltoides ; Aegilops speltoides ; Triticum aestivum ; wheat ; Schizaphis graminum ; greenbug ; wheat streak mosaic virus ; insect biotypes ; host plant resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Genetic studies were conducted to determine the inheritance of biotype E greenbug resistance in CI 17882 (CI 15092/T. speltoides//Fletcher/3/4* Centurk), a wheat germplasm line previously released as resistant to wheat streak mosaic virus (WSMV). In addition, the association of greenbug and WSMV resistance in CI 17882 was examined. Results indicated that biotype E greenbug resistance in CI 17882 is conditioned by a single dominant gene that is not linked with the WSMV resistance gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021870
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  • 3
    Electronic Resource
    Electronic Resource
    Doubled haploid production in winter wheat and triticale genotypes, using the Hordeum bulbosum system (1986)
    Springer
    Euphytica 35 (1986), S. 1045-1051 
    Details
    ISSN: 1573-5060
    Keywords: Hordeum bulbosum ; Triticum aestivum ; wheat ; triticale ; haploids ; doubled haploids ; crossability ; seed set ; embryo regeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary An attempt was made to produce doubled haploids on 16 winter wheat and six spring and winter triticale genotypes thought to carry genes for interspecific incompatibility. The potential for haploid production was maximized by the use of Hordeum bulbosum genotypes selected for high crossability on crossable wheat genotypes, the use of two post-pollination applications of gibberellic acid and by the pollination of immature florets. A low frequency of seed was set on both the wheat and the triticale genotypes, having mean seed sets of 0.20 per cent and 0.27 per cent respectively. Although the frequency of embryos (‘seed quality’) was high, doubled haploid production was further limited by poor embryo differentiation and regeneration. Haploid plantlets were obtained from the wheat cultivars Moulin and Renard, although successful chromosome doubling and doubled haploid production was achieved in Moulin only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028617
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  • 4
    Electronic Resource
    Electronic Resource
    Dough mixing properties of a wheat-rye derived cultivar (1986)
    Springer
    Euphytica 35 (1986), S. 225-232 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; wheat-rye derived cultivars ; dough stickiness ; dough mixing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary During test baking, the wheat line QT2870, bred from a rye-derived parent, Kavkaz, and having the pedigree Kavkaz/Timgalen//3*Oxley, showed excessive dough stickiness when slightly overmixed. Conventional quality tests on QT2870 and three commercial varieties did not show any major differences which could explain this dough stickiness. However, resistogram data for QT2870 were considerably different from those for the other cultivars. The curves for QT2870 had lower breaking points and sharper curve angles, indicating that it had a lower tolerance to high speed mixing than the other varieties. Dough stickiness and a lack of mixing tolerance are likely to be major problems limiting the use of rye-derived parents in Australian bread wheat breeding programmes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028561
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  • 5
    Electronic Resource
    Electronic Resource
    Differences between spring wheat cultivars in early growth (1986)
    Springer
    Euphytica 35 (1986), S. 273-292 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; growth analysis ; relative growth rate ; selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Twelve spring wheat cultivars were grown as isolated plants in the field and their pre-anthesis growth was interpreted in terms of plant growth analysis. Relative growth rate (RGR) decreased steadily with time due to a decline of leaf area per unit plant weight (LAR), which could be explained by the reduction of the portion of leaf weight in total plant weight (LWR). Growth per unit leaf area (NAR) and leaf area per unit leaf weight (SLA) changed only little with time. Differences between cultivars for NAR and LAR were of similar magnitude: both 8% when measured by the genetic coefficient of variation. Because both quantities were negatively correlated, the genetic variation of RGR was only 5%. Genetic variation for LWR and SLA were also of similar size, both about 4%. Estimates of genetic variances and covariances based on cultivar means appeared to be biased strongly when the error variation of the means was neglected. Special attention is paid to the methodology of plant growth analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028566
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  • 6
    Electronic Resource
    Electronic Resource
    Structure and chromosomal location of malate dehydrogenase (zone 2) isozymes in common and durum wheats (1986)
    Springer
    Euphytica 35 (1986), S. 509-513 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Triticum turgidum ; durum wheat ; nulli-tetrasomic lines of wheat ; malate dehydrogenase isozymes ; chromosomal location
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary This paper describes the phenotype for MDH-2 isozymes of leaf tissues of Triticum turgidum, T. aestivum and the nulli-tetrasomic lines of homoeologous group 1 of T. aestivum. The results obtained support the hypothesis that the MDH-2 isozymes are monomers coded by genes located in the 1A, 1B and 1D chromosomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021859
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  • 7
    Electronic Resource
    Electronic Resource
    Ontogenetic changes in photosynthetic capacity and dry matter production of flag wheat leaves during the grain filling period (1986)
    Springer
    Photosynthesis research 8 (1986), S. 209-218 
    Details
    ISSN: 1573-5079
    Keywords: flag leaf ; grain filling ; photosynthesis ; SDW index ; senescence onset ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relationships between photosynthetic capacity and dry matter accumulation during the grain filling period have been studied in flag leaves of Triticum aestivum L., cv. Kolibri grown in Mediterranean field conditions. Particular importance has been given to assimilate accumulation in relation to the onset of senescence. During grain filling, the time course of specific dry weight (SDW) was similar in the blade and in the sheath. Variations in SDW were about six times larger in the sheath than in the blade. Minimum blade SDW values occurred during heading and at anthesis. Maximum blade SDW values were observed two weeks after anthesis. After this, SDW values decreased sharply. The dry matter increase per grain in the period from two weeks after anthesis to the end, was only about 25% of final grain dry weight. The importance of environmental constraints on maximum SDW values are discussed. Maximum SDW values occurred at the beginning of the period of rapid decline in blade net CO2 assimilation rate and leaf nitrogen content, that is, at the beginning of senescence. On the other hand, the stomatal resistance to CO2 and the development of senescence are not apparently related. The maximum blade dry weight increase (considering a value of zero at heading) was about 60 mg dry weight per g fresh weight. The possible relationships between dry matter accumulation and senescence onset are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037129
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  • 8
    Electronic Resource
    Electronic Resource
    Dynamics of 6-methoxybenzoxazolinone in winter wheat (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 2011-2020 
    Details
    ISSN: 1573-1561
    Keywords: 6-Methoxybenzoxazolinone ; hydroxamic acids ; wheat ; photoperiod ; temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 6-Methoxybenzoxazolinone (6-MBOA), a compound derivable from some freshly growing plants, is known to stimulate reproduction in some mammals and birds. Winter wheat was studied under controlled laboratory conditions to determine the effects of photoperiod and temperature on derivable 6-MBOA content. Longer photoperiods decrease the amount of derivable 6-MBOA per gram of fresh material in 4-day-old wheat seedlings. Higher temperatures also decrease the amount of derivable 6-MBOA in 4-day-old wheat. 6-MBOA content decreases as the plant ages. Comparisons of only the first centimeter above the seed produced the same age-related result. 6-MBOA is concentrated in the meristematic region with decreasing amounts found in higher portions of the plant. Roots from 9-day-old plants contain 6-MBOA. Unsprouted wheat seeds contain negligible amounts of 6-MBOA. These results demonstrate that environmental variables have a significant effect on derivable 6-MBOA levels, but that under all the regimes studied, 6-MBOA is present in freshly sprouted wheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01041950
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  • 9
    Electronic Resource
    Electronic Resource
    The interaction of genotype and culture medium on the tissue culture responses of wheat (Triticum aestivum L. em. thell) callus (1986)
    Springer
    Plant cell, tissue and organ culture 7 (1986), S. 31-37 
    Details
    ISSN: 1573-5044
    Keywords: wheat ; tissue culture ; callus ; regeneration ; coconut milk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of the interaction of genotype and culture medium on the initiation of callus from immature embryos and subsequent plant regeneration was investigated in eight hexaploid wheat lines. Intervarietal differences in culture response and interaction of the genotype with coconut milk are reported. The relative contributions of media and genotype effects to culture performance are assessed. The observation that primordia and shoot development was promoted by coconut milk in some lines and inhibited in others is particularly significant given that coconut milk is widely used to try to improve culture response. This report shows that this effect is dependent on the genotype of the tissues in culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043918
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  • 10
    Electronic Resource
    Electronic Resource
    Cereal aphid populations and the relation between mean density and spatial variance (1986)
    Springer
    European journal of plant pathology 92 (1986), S. 127-132 
    Details
    ISSN: 1573-8469
    Keywords: Sitobion avenae ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting Teneinde de tijd nodig voor het tellen van graanluizen te beperken kan een minimale monstergrootte bepaald worden bij een van te voren vastgestelde nauwkeurigheid. Om deze monstergrootte uit te kunnen rekenen aan de hand van een voorspelling van de dichtheid moet er een betrouwbare relatie bestaan tussen de gemiddelde dichtheid en de ruimtelijke variantie. Uit analyse van veldgegevens voor de graanluisSitobion avenae blijkt dat een dergelijke relatie bestaat, en dat deze constant blijft tijdens het hele groeiseizoen.
    Notes: Abstract Analysis of field samples of the aphidSitobion avenae on winter wheat revealed that the power-relation between mean density and between-tiller variance did not change during the seasonal growth and decline of the aphid population. A single equation, therefore, could be used throughout the season to calculate the optimal sample size — the number of tillers that must be examined to yield an accurate estimate of aphid density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02000334
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