Rice Trait Ontology

ID	NAME	DEFINITION	IS_A
TO:0001050	strontium content trait	"A mineral and ion content trait (TO:0000465) which is the strontium ion (CHEBI:39130) composition in a plant structure (PO:0009011)." [TO:cooperl]	TO:0000465 ! mineral and ion content trait
TO:0001051	root hair density	"A root morphology trait (TO:0000043) which is the number of root hairs (GO:0035618) in a given surface area of a root (PO:0009005)." [PMID:27294384, TO:cooperl]	TO:0000043 ! root morphology trait
TO:0001052	root cortex cross-sectional area	"A portion of plant tissue morphology trait (TO:0000843) which is the cross-sectional area of the root cortex (PO:0000258)." [PMID:27294384, TO:cooperl]	TO:0000843 ! portion of plant tissue morphology trait
TO:0001053	subterranean shoot axis tuber length	"A subterranean shoot axis tuber morphology trait (TO:0000742) which is the length of a subterranean shoot axis tuber (PO:0004547)." [TO:cooperl]	TO:0000742 ! subterranean shoot axis tuber morphology trait
TO:0001054	root stele cross-sectional area	"A cardinal organ part morphology trait (TO:0000754) which is the cross-sectional area of the root stele (PO:0020124)." [PMID:27294384, TO:cooperl]	TO:0000754 ! cardinal organ part morphology trait
TO:0001055	root aerenchyma cross-sectional area	"A portion of plant tissue morphology trait (TO:0000843) which is the cross-sectional area of the root aerenchyma (PO:0006213)." [PMID:27294384, TO:cooperl]	TO:0000843 ! portion of plant tissue morphology trait
TO:0001056	root cross sectional area	"A root morphology trait (TO:0000043) which is the cross sectional area of a root (PO:0009005)." [PMID:21454799, TO:cooperl]	TO:0000043 ! root morphology trait
TO:0001057	root system width	"A root system morphology trait (TO:0000985) which is the width of the root system (PO:0025025)." [PMID:21454799, TO:cooperl]	TO:0000985 ! root system morphology trait
TO:0001058	root system depth	"A root system morphology trait (TO:0000985) which is the depth of the root system (PO:0025025)." [PMID:21454799, TO:cooperl]	TO:0000985 ! root system morphology trait
TO:0001059	root system width to depth ratio	"A root system morphology trait (TO:0000985) which is the ratio of the root system width (TO:0001057) to root system depth (TO:0001058)." [PMID:21454799, TO:cooperl]	TO:0000985 ! root system morphology trait
TO:0001060	subterranean shoot axis tuber width	"A subterranean shoot axis tuber morphology trait (TO:0000742) which is the width of a subterranean shoot axis tuber (PO:0004547)." [TO:cooperl]	TO:0000742 ! subterranean shoot axis tuber morphology trait
TO:0001061	inflorescence axis thickness	"An inflorescence axis morphology trait (TO:0000782) which is the thickness of an inflorescence axis (PO:0020122)." [PMID:26841834, TO:cooperl]	TO:0000782 ! inflorescence axis morphology trait
TO:0001062	number of panicle internodes	"A panicle inflorescence morphology trait (TO:0000847) which is the number of inflorescence axis internodes (PO:0006326) in a panicle inflorescence (PO:0030123)." [PMID:26841834, TO:cooperl]	TO:0000847 ! panicle inflorescence morphology trait
TO:0001063	panicle inflorescence internode length	"A panicle inflorescence morphology trait (TO:0000847) which is the length of the inflorescence axis internodes (PO:0006326) in a panicle inflorescence (PO:0030123)." [PMID:26841834, TO:cooperl]	TO:0000847 ! panicle inflorescence morphology trait
TO:0001064	number of panicle inflorescence branches per internode	"A panicle inflorescence morphology trait (TO:0000847) which is the average number of branches per inflorescence axis internode (PO:0006326) in a panicle inflorescence (PO:0030123)." [PMID:26841834, TO:cooperl]	TO:0000847 ! panicle inflorescence morphology trait
TO:0001065	panicle inflorescence terminal primary branch length	"A panicle inflorescence morphology trait (TO:0000847) which is the length of a terminal primary branch in a panicle inflorescence (PO:0030123)." []	TO:0000847 ! panicle inflorescence morphology trait
TO:0001066	number of metaxylem vessels	"A vascular tissue morphology trait (TO_0000470) which is the number of metaxylem vessels (PO:0025620)." [PMID:1186185, TO:Laurel_Cooper]	TO:0000470 ! vascular tissue morphology trait
TO:0001067	days to booting	"A flowering time trait (TO:0002616) which is the length of time for a plant or group of plants to reach booting stage (PO:0007014)." [PMID:26841834, TO:cooperl]	TO:0002616 ! flowering time trait
TO:0001068	processing quality trait	"A plant quality trait (TO:0000597) that is the utility of a plant, plant structure (PO:0009011) or plant product for post-harvest chemical, biological or mechanical transformation into a desired end product." [TO:cooperl]	TO:0000597 ! plant quality trait
TO:0001069	cooking quality trait	"A processing quality trait (TO:0001068) that is the utility of a plant, plant structure (PO:0009011) or plant product for a food cooking process (FOODON:03450002)." [FOODON:03450002, TO:cooperl]	TO:0001068 ! processing quality trait