ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Variation of harvest index in several wheat crosses (1976)
    Springer
    Euphytica 25 (1976), S. 41-50 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat harvest index ; pattern of variation ; degree of dominance ; heritability ; genetic coefficient of variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Harvest index was studied in F1 and F2 generations of eight wheat (Triticum aestivum L.) crosses and their reciprocals. The parental varieties involved in the crosses represented a fairly wide range of character expression for plant height, tillering potential, grain yield per plant and harvest index. Differences between reciprocal crosses were not evident for the expression of harvest index of the crosses under study. Means and degrees of dominance of F1 and F2 populations suggested partial dominance of high harvest index over low harvest index. The pattern of variation among F2 segregates was quantitative and the distribution was normal. The gene action governing the expression of harvest index was largely additive. Evidence was obtained for non-additive gene action in some crosses. There was complete absence of high parent heterosis for harvest index in the F1's but midparent heterosis was found to be present in all crosses. Estimates of heritability and genetic advance were moderate to high. Usefulness of selecting for harvest index as a measure of yield efficiency particularly in early generations is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041527
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Utilization of tom thumb source of pre-harvest sprouting tolerance in a wheat breeding programme (1977)
    Springer
    Euphytica 26 (1977), S. 565-572 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; pre-harvest sprouting ; Tom Thumb derivatives ; GA3 response index ; apparent α-amylase synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Segŕegating populations of the cross Tordo (a spring white-grained Tom Thumb derivative) and Tr 454-16 (a spring white-grained Sonora-Gabo derivative) were studied for plant height, apparent α-amylase synthesis (AAS) and response to gibberellic acid. Means, variances and heritabilities for these characters were computed and their association was studied by computing correlation coefficients. Plant height showed high heritability while AAS and response to GA3 showed moderate heritability. Plant height was positively correlated with AAS and response to GA3. The results pointed out the importance of using Tom Thumb as a source of pre-harvest sprouting tolerance in a wheat breeding programme, particularly in areas where wheat breeding is restricted to evolving white-grained cultivars.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00021682
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Variation in pigment content of flour color in bread wheat (Triticum aestivum L.) (1976)
    Springer
    Euphytica 25 (1976), S. 685-691 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat flour color ; flour pigment content ; variation ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Variation in pigment content of the flour of bread wheats (Triticum aestivum L.) was studied in the progenies of F1 and F2 of three crosses and their reciprocals. Reciprocal differences in pigment content were observed in the F1 and F2 means. Low pigment content was found to be partially dominant or over dominant in the crosses studied. There was evidence of substantial mid-parent F1 heterosis in all crosses and betterparent F1 heterosis in three crosses. In the F2, heritability estimates were moderate to high. The F2 frequency distributions were not normal. Estimation of effective factor pairs indicated the presence of one or two major gene pairs involved in the expression of pigment content in the flour. Action of modifiers was also assumed in one cross and its reciprocal. A factorial approach to metrical character suggested that the F2 segregation ratios of low pigment content to high pigment content were 3:1, 15:1, 13:3 and 9:7 for the different crosses. Utilization of the findings in a wheat breeding program is briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041607
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    On the problem of pre-harvest sprouting of wheat (1977)
    Springer
    Euphytica 26 (1977), S. 299-308 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; pre-harvest sprouting ; components of resistance to sprouting ; complex resistance (RCP) ; α-amylase synthesis ; GA3 response ; wheat endosperm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The problem of pre-harvest sprouting in wheat is very intricate. New concepts in breeding for resistance to pre-harvest sprouting regard many components such as α-amylase production potential, response to gibberellic acid and inhibition in the bracts as important as dormancy. In the research work carried out at The University of Sydney's Plant Breeding Institute, we found varietal differences for each of these components. We also developed criteria for screening breeding material for these components. The implications of our findings in planning efficient breeding programmes to evolve varieties with multiple resistance to pre-harvest sprouting have been discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026991
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Genotype x environment interactions for, heritabilities of, and correlations among quality traits in wheat (1975)
    Springer
    Euphytica 24 (1975), S. 597-604 
    Details
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Three sets of hard spring wheats (Triticum aestivum L.) comprising commercial cultivars and advanced generation breeding lines were studied in six different environments, to determine the genotype x environment interactions, heritabilities and correlations among nine quality traits in wheat. Significant genotype x environment interactions indicated that the bread making quality evaluations must be undertaken for several environments. Among the quality traits considered, test weight, flour yield, grain and flour proteins and particle size index were highly heritable. Baking score and baking volume indicated moderate heritabilities. Significant positive correlations existed between protein content (grain and flour) and baking traits, between grain protein and flour protein, and between baking score and baking volume. Flour yield and particle size index were found to be negatively correlated. Implications of these findings on wheat breeding procedures are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00132896
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Significance of path coefficient analysis in determining the nature of character association (1973)
    Springer
    Euphytica 22 (1973), S. 338-343 
    Details
    ISSN: 1573-5060
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Interrelationships among production characters were determined both by simple correlation and path coefficient analyses, using ecogeographically diverse spring wheat genotypes. Simple correlation analysis indicated that kernel weight correlated positively with plant height and negatively with heading time. Also spike number and kernel weight showed highly positive and heading time highly negative correlations with grain yield. Path coefficient analysis was useful in that it revealed the true nature of cause-and-effect relationships of heading time, plant height, spike number and kernel weight with grain yield. Wherever feasible, path coefficient analysis should be conducted in addition to simple correlation analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022643
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Thermal shrinkage of oriented semicrystalline poly(ethylene terephthalate) (1976)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 14 (1976), S. 575-590 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The shrinkage of commercial oriented poly(ethylene terephthalate) filaments was studied within the framework of the kinetic theory of rubberlike elasticity. Previous workers had found that the shrinkage and optical behavior of amorphous polymers could be satisfactorily explained in terms of this theory. Such an analysis is now applied to semicrystalline samples of moderate and high draw ratios (from 2× to 6×).It was found in this work that the thermal shrinkage force behavior as well as the optical anisotropy as a function of stretch can be explained in terms of the theory of rubberlike elasticity, if the following reasonable assumption is made: the average number of statistical segments per network chain in the noncrosslinked sample increases as a function of the draw ratio. A possible mechanism for such behavior is the relaxation of some of the chain entaglements due to the strain imposed externally on the fiber.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1976.180140401
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Effect of drawing on the unit cell dimensions of crystallites in commercial PET fibers (1976)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 14 (1976), S. 373-376 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1976.180140216
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    facet.materialart.
    Unknown
    Inheritance of Pigment Color in the Soybean 1 (1968)
    Wiley
    Details
    Publication Date: 1968-09-01
    Print ISSN: 0011-183X
    Electronic ISSN: 1435-0653
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Geographical Patterns of Phenotypic Diversity in a World Collection of Durum Wheats 1 (1975)
    Wiley
    Details
    Publication Date: 1975-09-01
    Print ISSN: 0011-183X
    Electronic ISSN: 1435-0653
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...