Rice Trait Ontology

ID	NAME	DEFINITION	IS_A
TO:0000022	stink bug resistance	"Causal agent	TO:0000261 ! insect damage resistance
TO:0000023	fungal infection related grain discoloration	"Causal agent	TO:0000439 ! fungal disease resistance
TO:0000024	ligule length	"A ligule morphology trait (TO:0002748) which is a length of a ligule measured in millimeters from the base of the leaf collar to the tip of the ligule (PO:0020105)." [IRRI:SES, PO:0020105, TO:cooperl]	TO:0000135 ! leaf lengthTO:0002748 ! ligule morphology trait
TO:0000025	molybdenum sensitivity	"Important for nitrate fixation." [Gramene:pankaj_jaiswal]	TO:0000080 ! micronutrient sensitivity
TO:0000026	aborted tri-nucleate stage	"Abortion at tri-nucleate stage of microspore development." [Gramene:pankaj_jaiswal, IRRI:SES]	TO:0000218 ! pollen abortion type
TO:0000027	culm number	"Actual count of the total number of tillers after full heading, Specify if per plant, hill or area." [IRRI:SES]	TO:0000077 ! shoot system morphology trait
TO:0000028	unfilled grain number	"Number of unfilled florets in a grass inflorescence." [Gramene:pankaj_jaiswal]	TO:0002759 ! grain number
TO:0000029	chlorine sensitivity	"Sensitivity to the chlorine content in the growth medium. Chloride helps regulate the correct pH (acid/alkaline) balance. This is a major electrolyte in the living cell besides sodium and potassium. It is available to the cell mainly in the form of NaCl and KCl salts." [Gramene:pankaj_jaiswal]	TO:0000080 ! micronutrient sensitivity
TO:0000030	sedge weed	"A common sedge weed Cyperus iria (rice flatsedge), Cyperus difformis (Small flower umbrella sedge), Rice field bulrush Scirpus mucronatus, River bulrush Scirpus fluviatilis. Grows as a weed in the rice field. Can be distinguished from grass plant by the leaf shape, venation, stem cross-section and plant shape leaf shape." [Gramene:pankaj_jaiswal, http//www.ipm.ucdavis.edu/PMG/r682700999.html, ISBN:9712200299]	TO:0000347 ! weed damage
TO:0000031	silicon sensitivity	None	TO:0000247 ! other nutrient sensitivity
TO:0000032	selenium sensitivity	None	TO:0000247 ! other nutrient sensitivity
TO:0000033	iodine sensitivity	None	TO:0000247 ! other nutrient sensitivity
TO:0000034	chromium sensitivity	"Sensitivity to the chromium content in the growth medium." [Gramene:pankaj_jaiswal]	WTO:0000463 ! heavy metal toxicityTO:0000247 ! other nutrient sensitivity
TO:0000035	incompatibility trait	None	TO:0000392 ! sterility or fertility traitTO:0000398 ! whole plant morphology trait
TO:0000036	hybrid incompatibility	None	TO:0000035 ! incompatibility trait
TO:0000037	male sterility extent	"OBSOLETE. Determines the extent of male sterility of a male sterile line. Can be determined by either pollen sterility or spikelet fertility" [Gramene:pankaj_jaiswal, IRRI:SES]	None
TO:0000038	fluorine sensitivity	None	TO:0000247 ! other nutrient sensitivity
TO:0000039	yield component	"OBSOLETE. Defines the components that determine the over all yield from a plant" [Gramene:pankaj_jaiswal]	None
TO:0000040	panicle length	"A panicle morphology trait (TO:0000847) which is the measurement in centimeters from panicle base to tip." [IRRI:SES]	TO:0000271 ! inflorescence lengthTO:0006032 ! panicle inflorescence size
TO:0000041	brown rice length	"A grain length (TO:0000734) monitored after dehulling but before polishing. The grain should contain pericarp (PO:0009084)." [IRRI:SES, PO:0009084, TO:moorel]	TO:0000734 ! grain length