Transfer of the barrier to radial oxygen loss in roots of Hordeum marinum to wheat (Triticum aestivum) evaluation of four H. marinum-wheat amphiploids

Transfer of the barrier to radial oxygen loss in roots of Hordeum marinum to wheat (Triticum aestivum) : evaluation of four H. marinum-wheat amphiploids

© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 190(2011), 2 vom: 15. Apr., Seite 499-508
1. Verfasser: Malik, A I (VerfasserIn)
Weitere Verfasser: Islam, A K M R, Colmer, T D
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Culture Media Soil Solutions Oxygen S88TT14065
Beschreibung
Zusammenfassung:© 2010 The Authors. New Phytologist © 2010 New Phytologist Trust.
• Wide hybridization of waterlogging-tolerant Hordeum marinum with wheat (Triticum aestivum) to produce an amphiploid might be one approach to improve waterlogging tolerance in wheat. • Growth, root aerenchyma and porosity, and radial oxygen loss (ROL) along roots were measured in four H. marinum-wheat amphiploids and their parents (four accessions of H. marinum and Chinese Spring wheat) in aerated or stagnant nutrient solution. A soil experiment was also conducted. • Hordeum marinum maintained shoot dry mass in stagnant nutrient solution, whereas the growth of wheat was markedly reduced (40% of aerated control). Two of the four amphiploids were more tolerant than wheat (shoot dry masses of 59-72% of aerated controls). The porosity of adventitious roots when in stagnant solution was higher in H. marinum (19-25%) and the four amphiploids (20-24%) than in wheat (16%). In stagnant solution, adventitious roots of H. marinum formed a strong ROL barrier in basal zones, whereas, in wheat, the barrier was weak. Two amphiploids formed a strong ROL barrier and two formed a moderate barrier when in stagnant solution. • This study demonstrates the transfer of higher root porosity and a barrier to ROL from H. marinum to wheat through wide hybridization and the production of H. marinum-wheat amphiploids
Beschreibung:Date Completed 18.07.2011
Date Revised 10.03.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/j.1469-8137.2010.03519.x