Comparative physiology of chickpea and faba bean tolerance to low O2, high CO2 and ethylene in the root-zone

Rushna Munir

    Research output: ThesisDoctoral Thesis

    112 Downloads (Pure)

    Abstract


    Soil waterlogging impedes roots, as O2 is low and CO2 is high. Root internal aeration and growth of chickpea and faba bean were studied. Chickpea had low root porosity (small primary aerenchyma) which restricted internal O2 supply, whereas faba bean had higher root porosity (primary and secondary aerenchyma) and greater O2 supply. Low O2, elevated ethylene and high CO2 all reduce growth. Both species showed poor recovery after low O2 and high CO2 in the root-zone. The sensitivity of grain legumes to low O2 and high CO2 should be tested for more genotypes, to aid the development of future breeding strategies.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    Award date4 Apr 2017
    Publication statusUnpublished - 2016

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