• Login
    View Item 
    •   Home
    • Massey Documents by Type
    • Theses and Dissertations
    • View Item
    •   Home
    • Massey Documents by Type
    • Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Quantitative inheritance of leaf shape characters in tobacco (Nicotiana tabacum L.) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Plant Science at Massey University, Palmerston North, New Zealand

    Icon
    View/Open Full Text
    01_front.pdf (1.465Mb)
    02_whole.pdf (24.43Mb)
    Export to EndNote
    Abstract
    An F₁ half diallel cross experiment with 8 parents (i.e. ½ p (p = 1) combinations) was used to study the quantitative inheritance of leaf shape characters in tobacco (Nicotiana tabacum L.). The effect of stalk positions on the inheritance of these characters was also included. The study was carried out under a glasshouse conditions. The parental lines used in the crosses represent a random sample of leaf shape characters available in New Zealand germplasm collection. Except for wing area (2nd leaf), phenotypic analysis showed that there was a high genetic variability for other characters. The genetic analysis of the diallel indicated that inter-locus interaction (epistasis) was of little importance for most of the characters studied. Additive genetic variance was the main component of the total genetic variance. Heritability estimates ranged from moderate (approximately 40 %) to moderately high (approximately 70 %) for most characters. Near similar values were obtained from both the narrow and broadsense heritability estimates. Very little hybrid vigour was observed for both leaf area and leaf dry weight. Both the phenotypic and genotypic correlation coefficients between selected pairs of characters were in good agreement with each other in terms of direction and levels of significance. The estimates were generally high and highly significant. The components of genetic variance (i.e. additive and dominance genetic variance), heritability and correlation coefficient estimates were generally larger in the middle as compared to the top or bottom leaves.
    Date
    1982
    Author
    Yaacob, Musa bin
    Rights
    The Author
    Publisher
    Massey University
    URI
    http://hdl.handle.net/10179/13506
    Collections
    • Theses and Dissertations
    Metadata
    Show full item record

    Copyright © Massey University
    | Contact Us | Feedback | Copyright Take Down Request | Massey University Privacy Statement
    DSpace software copyright © Duraspace
    v5.7-2020.1-beta1
     

     

    Tweets by @Massey_Research
    Information PagesContent PolicyDepositing content to MROCopyright and Access InformationDeposit LicenseDeposit License SummaryTheses FAQFile FormatsDoctoral Thesis Deposit

    Browse

    All of MROCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Copyright © Massey University
    | Contact Us | Feedback | Copyright Take Down Request | Massey University Privacy Statement
    DSpace software copyright © Duraspace
    v5.7-2020.1-beta1