Fine Mapping of Shoot Fly Resistance and Stay-Green QTLS on Sorghum Chromosome SBI-10

    Usha Kiranmayee, K N S (2016) Fine Mapping of Shoot Fly Resistance and Stay-Green QTLS on Sorghum Chromosome SBI-10. PHD thesis, Osmania University, Hyderabad.

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    Supervisors

    Supervisors NameSupervisors ID
    Kavi Kishor, P BOsmania University (Hyderabad)
    Hash, C TICRISAT (Patancheru)

    Abstract

    Sorghum [Sorghum bicolor (L.) Moench, 2n = 2x = 20] is the fifth most important cereal crop globally, and is grown primarily in arid and semi-arid conditions. Major biotic and abiotic constraints hampering sorghum production include shoot fly infestation during early stages of crop development (seedling establishment and early growth stages; but only present in the eastern hemisphere) and terminal drought stress during post-flowering growth stages. These two stresses can devastate the crop. Hence developing sorghum varieties with resistance for these two stresses is critical. In order to understand the genetic basis of sensitivity to these two stresses and to genetically dissect host plant resistance to shoot fly and tolerance to terminal drought stress, the following objectives were proposed for the present study:  to develop an introgression-line cross-based fine-mapping population for morphological components of shoot fly resistance and for the stay-green mechanism of terminal drought tolerance previously mapped to sorghum chromosome SBI-10L;  to fine-map the target traits by combining genotyping and phenotyping datasets of a selected recombinant sub-set of the fine-mapping population;  to annotate functionally and characterize candidate genes identified in the target region; and  to identify recombinant progenies with pyramided traits of interest.

    Item Type: Thesis (PHD)
    Divisions: RP-Dryland Cereals
    CRP: CGIAR Research Program on Dryland Cereals
    Uncontrolled Keywords: Sorghum, Shoot Fly, Sorghum Chromosome
    Subjects: Mandate crops > Sorghum
    Depositing User: Mr T L Gautham
    Date Deposited: 31 Jul 2017 10:18
    Last Modified: 31 Jul 2017 10:18
    URI: http://oar.icrisat.org/id/eprint/10092
    Acknowledgement: UNSPECIFIED
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