Table 1.

Seed shattering characterized in the set of wild Poaceae species.

Subfamily	Tribe	Species	2n	Genome	Rachis brittleness	Rachilla brittleness	Disarticulation zone	Dispersal unit (shape)	Reference
Pooideae	Triticeae	Hordeum vulgare ssp. spontaneum	14	H	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	Zohary et al., 2012
Pooideae	Triticeae	Secale vavilovii	14	R	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	Zohary et al., 2012
Pooideae	Triticeae	Triticum monococcum ssp. boeoticum	14	A	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	Zohary et al., 2012
Pooideae	Triticeae	Triticum urartu	14	A	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	Zohary et al., 2012
Pooideae	Triticeae	Triticum turgidum ssp. dicoccoides	28	AB	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	Zohary et al., 2012
Pooideae	Triticeae	Aegilops sharonensis	14	S	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	van Slageren, 1994
Pooideae	Triticeae	Aegilops longissima	14	S	Brittle	Non-brittle	Above rachis nodes	Whole spike (umbrella)1	van Slageren, 1994
Pooideae	Triticeae	Aegilops speltoides ssp. speltoides	14	S	Brittle	Non-brittle	Above rachis node	Whole spike (umbrella)2	van Slageren, 1994
Pooideae	Triticeae	Aegilops speltoides ssp. ligustica	14	S	Brittle	Non-brittle	Above rachis nodes	Spikelet and rachis segment (wedge)	van Slageren, 1994
Pooideae	Triticeae	Aegilops tauschii ssp. strangulata	14	D	Brittle	Non-brittle	Below rachis nodes	Spikelet and rachis segment (barrel)	van Slageren, 1994
Pooideae	Poeae	Lolium perenne	14	n.a.	Non-brittle	Brittle	Below rachilla nodes	Floret and rachilla segment	Elgersma et al., 1988
Pooideae	Aveneae	Avena eriantha	14	n.a.	Non-brittle	Brittle	Below rachilla nodes	Floret and rachilla segment	Delipavlov, 1999
Pooideae	Brachypodieae	Brachypodium distachyon	10	n.a.	Non-brittle	Brittle	Below rachilla nodes	Floret and rachilla segment	Opanowicz et al., 2008
Oryzoideae	Oryzeae	Oryza sativa ssp. indica	24	n.a.	Non-brittle	Brittle	Below glumes	Spikelet	Konishi et al., 2006
Panicoideae	Paniceae	Setaria viridis	18	n.a.	Non-brittle	Brittle	Below glumes	Spikelet	Doust et al., 2014
Panicoideae	Andropogoneae	Sorghum virgatum	20	n.a.	Non-brittle	Brittle	Below glumes	Spikelet	Lin et al., 2012
Panicoideae	Andropogoneae	Zea mays ssp. parviglumis	20	n.a.	Brittle	Non-brittle	Below rachis nodes	Spikelet and rachis segment (barrel)	Studer et al., 2017

n.a., Not applicable.

¹Described as “disarticulating as one unit at maturity with the rudimentary or a few lower, fertile spikelets remining attached to the culm” in van Slageren (1994).

²Described as “disarticulating at maturity as one unit with the rudimentary spikeletes remaining attached to the culm” in van Slageren (1994).