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

Rushna Munir

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

Rushna Munir

Research output: Thesis › Doctoral Thesis

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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 language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Colmer, Tim, Supervisor Siddique, Kadambot, Supervisor
Award date	4 Apr 2017
Publication status	Unpublished - 2016

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THESIS - DOCTOR OF PHILOSOPHY - MUNIR Rushna - 2016
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Cite this

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

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.",

keywords = "Chickpea, Faba bean (Vicia faba L.), Water logging, Aerenchyma, Root porosity, Internal aeration, Hypoxia, High carbon dioxide",

author = "Rushna Munir",

year = "2016",

language = "English",

school = "The University of Western Australia",

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TY - THES

T1 - Comparative physiology of chickpea and faba bean tolerance to low O2, high CO2 and ethylene in the root-zone

AU - Munir, Rushna

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Chickpea

KW - Faba bean (Vicia faba L.)

KW - Water logging

KW - Aerenchyma

KW - Root porosity

KW - Internal aeration

KW - Hypoxia

KW - High carbon dioxide

M3 - Doctoral Thesis

ER -

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

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