Study of inheritance and identification of molecular markers for fertility restorers in pigeonpea [Cajanus cajan (L.) Millspaugh]

    Saxena, R K (2010) Study of inheritance and identification of molecular markers for fertility restorers in pigeonpea [Cajanus cajan (L.) Millspaugh]. PHD thesis, International Crops Research Institute for the Semi-Arid Tropics .

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    Supervisors

    Supervisors NameSupervisors ID
    Varshney, R KUNSPECIFIED

    Abstract

    An effort has been made to understand the genetics of fertility restoration (Fr) and linking molecular markers with this trait in pigeonpea. A set of 159 A-, B- and R- lines were screened for polymorphism with 148 simple sequence repeat (SSR) markers to choose the most diverse crossing parents. In total, 41 SSR markers showed polymorphism with 2 to 6 alleles and 0.01 to 0.81 polymorphism information content value across the lines surveyed. Two parental combinations for each early (ICPA 2039 × ICPR 2438 and ICPA 2039 × ICPR 2447) and late (ICPA 2043 × ICPR 2671 and ICPA 2043 × ICPR 3467) maturing groups were identified. Segregation data for male fertility/sterility of BC1F1 and F2 populations showed involvement of two duplicate dominant genes in governing male-fertility. Two genetic maps based on ICPA 2039 × ICPR 2447 and ICPA 2043 × ICPR 2671 mapping populations with 82 and 117 SSR loci, respectively were developed. QTL analysis of the F2 mapping populations based on ICPA 2039 × ICPR 2447 and ICPA 2043 × ICPR 2671 detected six (four major and two minor) and four (one major and three minor) QTLs involved in the fertility restoration, respectively.

    Item Type: Thesis (PHD)
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Pigeonpea
    Others > Genetics and Genomics
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 22 Feb 2012 03:24
    Last Modified: 24 Feb 2012 09:32
    URI: http://oar.icrisat.org/id/eprint/5561
    Acknowledgement: UNSPECIFIED
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