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  • Amaranthus species  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Interspecific hybrids and possible phylogenetic relations in grain amaranths (1991)
    Springer
    Euphytica 52 (1991), S. 33-38 
    Details
    ISSN: 1573-5060
    Keywords: Amaranthus species ; grain amaranths ; interspecific hybrids ; phylogenetic relationships
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Phylogenetic relations among the three species in grain amaranth need investigation to provide information for breeding experiments germplasm conservation efforts, and decision on evolutionary patterns in the grain types. Hybrid development from crosses between species was studied to find out genetic relationship between them. Interspecific crosses were made among Amaranthus hypochondriacus, A. caudatus and A. cruentus in the glasshouse. The F1 plants were relatively easy to obtain but had low pollen fertility (10.3–15.1%) and low seed set. A few of these hybrids did not produce seeds. Only a few F1 seeds obtained in crosses between A. cruentus and A. caudatus. All the F1 plants from these crosses died at the seedling stage. Crosses between A. cruentus and A. hypochondriacus produced few seeds. Most of the F1 plants obtained from the seeds died at the seedling stage with only four plants growing to maturity but were sterile. Based on hybrid development, it was suggested that A. hypochondriacus and A. caudatus were genetically closer than the other two combinations of species studied. A. cruentus seemed to be genetically closer to A. hypochondriacus than it was to A. caudatus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037854
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Inheritance of some morphological traits in grain amaranthus (1990)
    Springer
    Euphytica 46 (1990), S. 79-84 
    Details
    ISSN: 1573-5060
    Keywords: Amaranthus species ; grain amaranth ; morphological traits ; inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Intraspecific crosses involving five cultivars of Amaranthus hypochondriacus and two from A. caudatus were studied to investigate the inheritance of five morphological traits (seed coat colour, inflorescence colour, seedling colour, oval leaf mark and purple leaf mark). Seedling colour, inflorescence colour, seed coat colour and oval leaf mark segregated to a 3:1 ratio and therefore each was controlled by a single dominant gene. The purple leaf mark segregated in 9:7 ratio and hence may be controlled by two dominant genes. Simultaneous segregation for seed coat colour and inflorescence colour gave a ratio of 9:3:3:1. Similar genetic ratio was observed for the simultaneous segregation for oval leaf mark and inflorescence colour. It was suggested that each of these traits is controlled by independent genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00057621
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    Paper (German National Licenses)
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