Geometric morphometric analysis of grain shape and the identification of two-rowed barley (Hordeum vulgare subsp. distichum L.) in southern France

Abstract

International audienc

Arabidopsis phenotyping through geometric morphometrics

“…In fact, the use of GM tools to analyze plant shape have already started, from a botanical, systematic, archaeological [32, 33, 35], and even experimental [58] point of view.…”

“…GM is now a mature discipline that has been widely applied in biology [28–30] (see [31] for a review). For example, barley seeds [32] and grapevine leaves [33] and oak leaves [34, 35] were studied using GM methods.…”

Identification of inter- and intra-species variation in cereal grains through geometric morphometric analysis, and its resilience under experimental charring

“…Morphometric methods have been used to address intra-species variation for other archaeobotanical remains such as grape pips (Bouby et al, 2013;Terral et al, 2010), and Ros et al have recently investigated grain shape variation between sub-species and 70 varieties of barley (Ros et al, 2014). This type of investigation is best achieved through the analysis of variation in modern material where the species and source of the grain is already known, before attempts are made to apply the method to archaeologically preserved material where taxonomic identity must be inferred from the remains themselves.…”

“…The manner in which this is achieved depends on whether there are many features present that can be landmarked, or 100 whether curves, outlines and surfaces are the shapes' main homologous features. Recently, application of geometric morphometrics to archaeobotanical material has proven helpful to aid species identification (García-Granero et al, 2016) and, beyond this, to examine variation within species (Burger et al, 2011;Newton et al, 2006;Orrù et al, 2013;Pagnoux et al, 2014;Ros et al, 2014;Terral et al, 2012Terral et al, , 2010Terral et al, , 2004Ucchesu et al, 2016). Studies 105 to date have, however, focused on fruit stones such as grape and olive, while the application of geometric morphometrics to cereal grains has been treated with caution due to the known shape distortion caused by charring of starch-rich grain compared with the relative shape stability of woody fruit stones.…”

Morphometrical methods as tools for identifying field maple (Acer campestre L.) trees

“…() placed two landmarks at the apex and base of seeds of orchids in the tribe Chloraeeae Lindl., Jacques & Zhou () placed four landmarks on the endocarp surface of Menispermum L., Ros et al. () used three landmarks spaced out at apical end and basal part of barley grains ( Hordeum L.) and Terral et al. () used two landmarks on olive ( Olea L.) stones.…”