首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Development of wheat kernels with contrasting endosperm texture characteristics as determined by magnetic resonance imaging and time domain-nuclear magnetic resonance
Authors:Cecilia Castro  Laura Gazza  Roberto Ciccoritti  Norberto Pogna  Cesare Oliviero Rossi  Cesare Manetti
Institution:1. Dipartimento di Chimica, Universitá degli Studi di Roma “La Sapienza”, Piazzale Aldo Moro 5, Roma 00185, Italy;2. CRA-QCE, Via Cassia 176, Roma, Italy;3. Dipartimento di Chimica, Università della Calabria, Cubo 12C Via P. Bucci, Arcavacata di Rende (CS), Italy
Abstract:Spikes and seeds from diploid ‘einkorn’ wheat Triticum monococcum and two near-isogenic hard and soft common wheat (Triticum aestivum) lines were harvested at regular intervals from 7 days post-anthesis (dpa) and analysed by non-destructive magnetic resonance imaging (MRI) and time domain-nuclear magnetic resonance (TD-NMR). A large amount of free water occurred in rachises, glumes and awns of spikes collected at 7 dpa, and accumulated in the physiologically active cells of the endosperm at 21 dpa. In the final stages of kernel development, awns and seed embryos exhibited a high MR signal due to the presence of free water likely associated with biological activities. TD-NMR relaxation time distributions obtained by discrete exponential fitting, distributed exponential fitting and SLICING multivariate analysis offered detailed information on mobility behaviour of water molecules in developing seeds and were able to differentiate two soft and hard isolines from common wheat cv. Enesco at early stages of seed development.
Keywords:TD-NMR  MRI  Multi-way analysis  Texture characteristics  Wheat
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号