Genetic analysis of meiotic-stage water stress tolerance in wheat (Triticum aestivum. L.)

Ifeyinwa Olive Onyemaobi

Research output: ThesisDoctoral Thesis

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Abstract

Wheat grown under rain-fed farming systems often experiences water stress during meiosis - a highly water-sensitive phase. This study found that both male and female organs were responsible for low seed set and yield reduction when water stress
occurred during meiosis. Major contributors to high seed set in wheat exposed to meiotic-stage water stress were found to be additive genes. Two major QTL responsible for grain number under meiotic-stage water stress were identified and validated.
Two SSR markers linked to the validated QTL could potentially be useful in marker-assisted selection for breeding wheat cultivars resistant to water stress during meiosis.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Yan, Guijun, Supervisor
  • Siddique, Kadambot, Supervisor
  • Liu, Hui, Supervisor
Award date15 Mar 2018
DOIs
Publication statusUnpublished - 2018

Fingerprint

stress tolerance
genetic techniques and protocols
water stress
Triticum aestivum
meiosis
wheat
seed set
quantitative trait loci
rainfed farming
marker-assisted selection
seed yield
farming systems
water
breeding
cultivars
genes

Cite this

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abstract = "Wheat grown under rain-fed farming systems often experiences water stress during meiosis - a highly water-sensitive phase. This study found that both male and female organs were responsible for low seed set and yield reduction when water stressoccurred during meiosis. Major contributors to high seed set in wheat exposed to meiotic-stage water stress were found to be additive genes. Two major QTL responsible for grain number under meiotic-stage water stress were identified and validated.Two SSR markers linked to the validated QTL could potentially be useful in marker-assisted selection for breeding wheat cultivars resistant to water stress during meiosis.",
keywords = "Wheat, Meiosis, Water stress tolerance, Genetic analysis, Auricle distance",
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school = "The University of Western Australia",

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Genetic analysis of meiotic-stage water stress tolerance in wheat (Triticum aestivum. L.). / Onyemaobi, Ifeyinwa Olive.

2018.

Research output: ThesisDoctoral Thesis

TY - THES

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PY - 2018

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AB - Wheat grown under rain-fed farming systems often experiences water stress during meiosis - a highly water-sensitive phase. This study found that both male and female organs were responsible for low seed set and yield reduction when water stressoccurred during meiosis. Major contributors to high seed set in wheat exposed to meiotic-stage water stress were found to be additive genes. Two major QTL responsible for grain number under meiotic-stage water stress were identified and validated.Two SSR markers linked to the validated QTL could potentially be useful in marker-assisted selection for breeding wheat cultivars resistant to water stress during meiosis.

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KW - Meiosis

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KW - Genetic analysis

KW - Auricle distance

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