Home

Molecular characterization and expression analysis of ABA 8′- hydroxylase 1 and abscisic acid insensitive 5 genes with respect to seed dormancy in wheat (Triticum aestivum L.)

Show simple item record

dc.contributor.supervisor Ayele, Belay T. (Plant Science) en_US
dc.contributor.author Rehal, Pawanpuneet Kaur
dc.date.accessioned 2018-12-10T20:48:34Z
dc.date.available 2018-12-10T20:48:34Z
dc.date.issued 23 Nov, 2018 en_US
dc.date.submitted 2018-12-07T22:42:17Z en
dc.identifier.uri http://hdl.handle.net/1993/33588
dc.description.abstract In cereal crops such as wheat, seed dormancy is closely associated with the occurrence of preharvest sprouting (PHS), germination of the grain prior to harvest under moist conditions. While higher level of seed dormancy results in a delay in germination, low level of seed dormancy causes preharvest sprouting which negatively affects yield and end use quality of wheat grains. Therefore, it is necessary for wheat grains to have certain level of dormancy to prevent preharvest sprouting. Abscisic acid (ABA) is one of the plant hormones that predominantly regulates seed dormancy and germination, and molecular elements involved in its metabolic and signalling pathways play crucial roles in this regard. The ABA catabolic gene ABA 8′-hydroxylase 1 (ABA8′OH1) has been known as a key regulator of the amount of ABA in the seeds of several plant species while the transcription factor abscisic acid insensitive 5 (ABI5) plays pivotal role to determine ABA responsiveness of the seed, which in turn influences the degree of dormancy. To better understand the roles of ABA8′OH1 and ABI5 in wheat seed dormancy and germination, the present study performed molecular characterization and expression analysis of the genes in different wheat genotypes that showed a range of dormancy phenotypes. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject Preharvest sprouting,Seed dormancy, Wheat en_US
dc.title Molecular characterization and expression analysis of ABA 8′- hydroxylase 1 and abscisic acid insensitive 5 genes with respect to seed dormancy in wheat (Triticum aestivum L.) en_US
dc.type info:eu-repo/semantics/masterThesis
dc.type master thesis en_US
dc.degree.discipline Plant Science en_US
dc.contributor.examiningcommittee Humphreys, Gavin (Plant Science) Cattani, Douglas J. (Plant Science) Chen, Gavin (Biological Sciences) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note February 2019 en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

View Statistics