The Soybase Soybean Whole Plant Growth stage ontology (SOY growth) was developed to unite the familar soybean growth and development stages (V and R stages) with the more generic Plant Ontology Whole Plant Growth stages (PO) and the BBCH scale. This is intended to facilitate the translation of observations using these disparate ontologies and allow researchers to more easily collate the relevent literature based on shared developmental points.

Conversions Between SOY growth, PO Whole Plant Growth Stages and BBCH Scale

Growth Stage	Growth Stage Title	SOY Accession Number	SOY Title	BBCH Scale ID Number	PO Accession Number	PO Accession Title
VE	Emergence	SOY:0000014	1.00 Cotyledon visible PO:0007049, BBCH 10 100	10 100	PO:0007049	Cotyledons emergence
VC	Unifoliolate	SOY:0000015	1.01 Unifoliolate leaves unfolded PO:0007094 BBCH 11 101	11 101	PO:0007094	LP.01 one leaf visible
V1	1st Trifoliolate	SOY:0000016	1.02 1st Trifoliolate leaf unfolded PO:0007098 BBCH 12 102	12 102	PO:0007098	LP02 two leaves visible
V2	2nd Trifoliolate	SOY:0000017	1.03 2nd Trifoliolate leaf unfolded PO:0007106 BBCH 13 103	13 103	PO:0007106	LP.03 three leaves visible
V3	3rd Trifoliolate	SOY:0000018	1.04 3rd Trifoliolate leaf unfolded PO:0007115 BBCH 14 104	14 104	PO:0007115	LP.04 four leaves visible
V4	4th Trifoliolate	SOY:0000019	1.05 4th Trifoliolate leaf unfolded PO:0007065 BBCH 15 105	15 105	PO:0007065	LP.05 five leaves visible
V5	5th Trifoliolate	SOY:0000020	1.06 5th Trifoliolate leaf unfolded PO:0007123 BBCH 16 106	16 106	PO:0007123	LP.06 six leaves visible
V6	6th Trifoliolate	SOY:0000021	1.07 6th Trifoliolate leaf unfolded PO:0007063 BBCH 17 107	17 107	PO:0007063	LP.07 seven leaves visible
V7	7th Trifoliolate	SOY:0000022	1.08 7th Trifoliolate leaf unfolded PO:0007095 BBCH 18 108	18 108	PO:0007095	LP.08 eight leaves visible
V8	8th Trifoliolate	SOY:0000023	1.09 8th Trifoliolate leaf unfolded PO:0007101 BBCH 19 109	19 109	PO:0007101	LP.09 nine leaves visible
V9	9th Trifoliolate	SOY:0000024	1.10 9th Trifoliolate leaf unfolded PO:0007103 BBCH 19 110	19 110	PO:0007103	LP.10 ten leaves visible
V10	10th Trifoliolate	SOY:0000025	1.11 10th Trifoliolate leaf unfolded PO:0007116 BBCH 19 111	19 111	PO:0007116	LP.11 eleven leaves visible
V11	11th Trifoliolate	SOY:0000026	1.12 11th Trifoliolate leaf unfolded PO:0007064 BBCH 19 112	19 112	PO:0007064	LP.12 twelve leaves visible
V12	12th Trifoliolate	SOY:0000027	1.13 12th Trifoliolate leaf unfolded PO:0007083 BBCH 19 113	19 113	PO:0007083	LP.13 thirteen leaves visible
V13	13th Trifoliolate	SOY:0000028	1.14 13th Trifoliolate leaf unfolded PO:0007085 BBCH 19 114	19 114	PO:0007085	LP.14 fourteen leaves visible
V14	14th Trifoliolate	SOY:0000029	1.15 14th Trifoliolate leaf unfolded PO:0007104 BBCH 19 115	19 115	PO:0007104	LP.15 fifteen leaves visible
V15	15th Trifoliolate	SOY:0000030	1.16 15th Trifoliolate leaf unfolded PO:0007119 BBCH 19 116	19 116	PO:0007119	16 leaves unfolded
V16	16th Trifoliolate	SOY:0000031	1.17 16th Trifoliolate leaf unfolded PO:0007067 BBCH 19 117	19 117	PO:0007067	17 leaves unfolded
V17	17th Trifoliolate	SOY:0000032	1.18 17th Trifoliolate leaf unfolded PO:0007072 BBCH 19 118	19 118	PO:0007072	18 leaves unfolded
V18	18th Trifoliolate	SOY:0000033	1.19 18th Trifoliolate leaf unfolded PO:0007120 BBCH 19 119	19 119	PO:0007120	19 leaves unfolded
V19	19th Trifoliolate	SOY:0000034	1.20 19th Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V20	20th Trifoliolate	SOY:0000035	1.21 20th Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V21	21st Trifoliolate	SOY:0000036	1.22 21st Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V22	22nd Trifoliolate	SOY:0000037	1.23 22nd Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V23	23rd Trifoliolate	SOY:0000038	1.24 23rd Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V24	24th Trifoliolate	SOY:0000096	1.25 24th Trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
V25	25th Trifoliolate	SOY:0000025	1.26 25 or more trifoliolate leaf unfolded PO:0007082	None	PO:0007082	20 or more leaves unfolded
R1	Beginning Bloom	SOY:0000072	6.00 1st flowers on main stem open PO:0007026 BBCH 60 600	60 600	PO:0007026	First flower(s) open
R2	Full Bloom	SOY:0000075	6.08 Full flowering approx. equiv. PO:0007062	None	PO:0007052	FL.03 3/4 of flowers open
R3	Beginning Pod	SOY:0000079	Pod 10% of final length PO:0007032, approx. equiv. R3, BBCH 71 701	71 701	PO:0007032	Fruit size 10%
R4	Full Pod	SOY:0000084	7.03 Pod 50% of final length PO:0007029, approx. equiv. R4, BBCH 75 705	75 705	PO:0007029	FF.02 fruit size 50%
R5	Beginning Seed	SOY:0000085	8.01 Beginning bean ripening PO:0007001 approx. equiv. R5	None	PO:0007001	FR.01 early stage of fruit ripening
R6	Full Seed	SOY:0000087	8.05 Mid ripening approx. equiv. PO:0007031, R6	None	PO:0007031	Mid stage of fruit ripening
R7	Beginning Maturity	SOY:0000088	8.07 Late ripening approx. equiv. PO:0007050, R7, BBCH 79 709	79 709	PO:0007050	Late stage of fruit ripening
R8	Full maturity	SOY:0000089	8.09 Final ripening approx. equiv. PO:0007038, R8, BBCH 89 909	89 909	PO:0007038	FR.04 Fruit ripening complete