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Biologia Plantarum

, Volume 26, Issue 4, pp 285–292 | Cite as

Yield and yield components in flue-cured tobacco and their genetic analysis

  • H. Ibrahim
  • B. Slavík
  • Nadězda Avratovščuková
Original Papers
  • 55 Downloads

Abstract

Five cultivars and the half diallel set of 10 F1 hybrids of flue-cured tobacco (Nicotiana tabacum L.) were grown in two seasons. Highly significant differences were assessed between genotypes as concerns flowering time, plant height, number of leaves, leaf length and width and yield per plot. High to moderate values for heritability in the broad sense were obtained in all cases. Hybrids, in general, flowered earlier, were taller, had fewer but shorter and wider leaves and slightly increased yield when compared with the mean value of all parents. The variance associated with general combining ability (GCA) was highly significant in all characters. The estimates of SCA were significant in most cases. High GCA/SCA ratios which largely exceeded the unity were obtained for most attributes. The negative and positive alleles were unequally distributed in the parents for all the studied traits. A small number of effective genes was obtained for all characters except plant height, where one to two groups of genes were distinguished

Keywords

Plant Height Yield Component Leaf Length General Combine Ability Dominance Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Academia 1984

Authors and Affiliations

  • H. Ibrahim
    • 1
  • B. Slavík
    • 1
  • Nadězda Avratovščuková
    • 1
  1. 1.Institute of Experimental BotanyCzechoslovak Academy of Sciences, and Faculty of Natural SciencesPraha

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