An analysis of dormancy, ABA responsiveness, after-ripening and pre-harvest sprouting in hexaploid wheat (Triticum aestivum L.) caryopses.

Journal of Experimental Botany
Tanja GerjetsMichael J Holdsworth

Abstract

Embryo and caryopsis dormancy, abscisic acid (ABA) responsiveness, after-ripening (AR), and the disorder pre-harvest sprouting (PHS) were investigated in six genetically related wheat varieties previously characterized as resistant, intermediate, or susceptible to PHS. Timing of caryopsis AR differed between varieties; AR occurred before harvest ripeness in the most PHS-susceptible, whereas AR was slowest in the most PHS-resistant. Whole caryopses of all varieties showed little ABA-responsiveness during AR; PHS-susceptible varieties were responsive at the beginning of the AR period whereas PHS-resistant showed some responsiveness throughout. Isolated embryos showed relatively little dormancy during grain-filling and most varieties exhibited a window of decreased ABA-responsiveness around the period of maximum dry matter accumulation (physiological maturity). Susceptibility to PHS was assessed by overhead misting of either isolated ears or whole plants during AR; varieties were clearly distinguished using both methods. These analyses allowed an investigation of the interactions between the different components of seed development, compartments, and environment for the six varieties. There was no direct relationship between speed...Continue Reading

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Citations

Oct 5, 2011·Proceedings of the National Academy of Sciences of the United States of America·Cristina Martínez-AndújarHiroyuki Nonogaki
Sep 8, 2011·The Plant Cell·Shingo NakamuraHideho Miura
Mar 25, 2014·Molecular Breeding : New Strategies in Plant Improvement·A K SinghR D Cuthbert
Nov 3, 2011·Plant Cell Reports·Ada Linkies, Gerhard Leubner-Metzger
May 2, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Pawan KulwalMark E Sorrells
Dec 6, 2012·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Elizabeth C SchrammCamille M Steber
Jun 21, 2013·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jörg SchatzkiChristian Möllers
Feb 19, 2013·Plant Science : an International Journal of Experimental Plant Biology·Abu Sefyan I SaadYu-Cai Liao
Oct 14, 2014·Frontiers in Plant Science·Feng Gao, Belay T Ayele
May 1, 2016·Physiologia Plantarum·Sung-Il KimHak Soo Seo
Sep 27, 2014·Planta·Daryl J Mares, Kolumbina Mrva
Jan 30, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shantel A MartinezCamille M Steber
Mar 2, 2018·Frontiers in Plant Science·Shantel A MartinezCamille M Steber
Jun 6, 2015·Physiologia Plantarum·Néstor Carrillo-BarralMaría Del Carmen Rodríguez-Gacio
Jan 13, 2015·Journal of Plant Registrations·Shantel A MartinezCamille M Steber
Jul 1, 2017·BMC Genomics·Kazumitsu OnishiKazuhiro Sato
Jan 21, 2021·Journal of Experimental Botany·Li TaiKun-Ming Chen

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BETA
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