Short periods of high temperature during meiosis prevent normal meiotic progression and reduce grain number in hexaploid wheat (Triticum aestivum L.)

Short periods of high temperature during meiosis prevent normal meiotic progression and reduce... Theor Appl Genet (2017) 130:1785–1800 DOI 10.1007/s00122-017-2925-1 ORIGINAL ARTICLE Short periods of high temperature during meiosis prevent normal meiotic progression and reduce grain number in hexaploid wheat (Triticum aestivum L.) 1 1 Tracie Draeger · Graham Moore Received: 5 December 2016 / Accepted: 15 May 2017 / Published online: 26 May 2017 © The Author(s) 2017. This article is an open access publication Abstract progressing through meiosis after heat treatment was lower Key message Exposure of wheat to high temperatures for N5DT5B plants than for euploids, but the difference during male meiosis prevents normal meiotic progres- was not significant. However, following exposure to 30 °C, sion and reduces grain number. We define a tempera - in euploid plants grain number was reduced (though not ture-sensitive period and link heat tolerance to chromo- significantly), whereas in N5DT5B plants the reduction some 5D. was highly significant. After exposure to 35 °C, the reduc- Abstract This study assesses the effects of heat on meiotic tion in grain number was highly significant for both gen - progression and grain number in hexaploid wheat (Triticum otypes. Implications of these findings for the breeding of aestivum L. var. Chinese Spring), defines a heat-sensitive thermotolerant wheat http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png TAG Theoretical and Applied Genetics Springer Journals

Short periods of high temperature during meiosis prevent normal meiotic progression and reduce grain number in hexaploid wheat (Triticum aestivum L.)

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by The Author(s)
Subject
Life Sciences; Plant Breeding/Biotechnology; Plant Genetics and Genomics; Agriculture; Plant Biochemistry; Biochemistry, general; Biotechnology
ISSN
0040-5752
eISSN
1432-2242
D.O.I.
10.1007/s00122-017-2925-1
Publisher site
See Article on Publisher Site

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