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  • 1
    Electronic Resource
    Electronic Resource
    Are “multiple cross-multiple pollen hybrids’ an answer for productive populations in Brassica campestris var. ‘brown sarson’? (1979)
    Springer
    Theoretical and applied genetics 54 (1979), S. 203-207 
    Details
    ISSN: 1432-2242
    Keywords: Multiple cross ; Combining ability ; Brassica campestris ; Genetic characterisation ; Oil seed breeding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A set of complex crosses with multiple crosses as female parents were made using multiple pollen in turnip rape (Brassica campestris L.). These multiple cross — multiple pollen hybrids (mucromphs) were evaluated for a large number of quantitative characters including yield. New methods were proposed to study such genetic material in depth so as to formulate suitable strategies to breed for attractive seed yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00267708
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  • 2
    Electronic Resource
    Electronic Resource
    Are ‘multiple cross-multiple pollen hybrids’ an answer for productive populations in Brassica campestris (var.) Brown Sarson? (1980)
    Springer
    Theoretical and applied genetics 58 (1980), S. 5-10 
    Details
    ISSN: 1432-2242
    Keywords: Multiple cross ; Combining ability ; Brassica-campestris ; Heterosis ; Multiple pollen ; Oilseed breeding ; Genetic classification ; Mucromphs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A set of 167 ‘mucromphs’ was evaluated in their F1 generation for seven ‘plant’, four ‘plot’ and five ‘ratio’ characters. Methods of characterizing the parents and the hybrids on the basis of combining ability effects described in the first part were found to be efficient in identifying desirable cross combinations for pedigree breeding or generating composite populations. Order effects of multiple-pollen combinations were found to be potent for a number of character components. High x Low cross-combinations were found to produce a high frequency of heterotic crosses followed by High x High. Selected biparental progenies, single crosses, three-way crosses and elite varieties were successful female parents and combinations of pollen from two varieties, one variety and three varieties were successful male parents, in that order, in producing significant heterosis in mucromphs. The relationship between general and specific combining ability on the one hand and realised heterosis on the other was discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264659
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  • 3
    Electronic Resource
    Electronic Resource
    Heterosis in relation to genetic divergence and specific combining ability in groundnut (Arachis hypogaea L.) (1984)
    Springer
    Euphytica 33 (1984), S. 33-39 
    Details
    ISSN: 1573-5060
    Keywords: Arachis hypogaea ; genetic divergence ; heterosis ; combining ability ; diallel crosses ; D2 statistic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The frequency and magnitude of heterosis were examined in relation to genetic divergence among parents in two diallel cross experiments in groundnut. The parents were grouped into clusters based on their diver-gence. The range, mean and standard deviation of the intra-and inter-cluster divergence were used to define four divergence classes. The frequency of heterotic crosses and the magnitude of heterosis for yield and its components were found to be higher in crosses between the parents in intermediate divergence classes than extreme ones. The results agreed well with the overall status of the specific combining ability of these crosses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022747
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