AMMI analysis of genotype × environment interaction on grain yield of sesame (Sesamum indicum L.) genotypes in Iran

Figures & data

Table 1. Sesame genotypes used in this study.

No.	Genotype	No.	Genotype	No.	Genotype
1	Dashtestan 5	6	Darab 2	11	Sirjan Local Cultivar
2	TS-3	7	Darab 1	12	PF3
3	Yellow white	8	Darab 14	13	Isfahan Local Cultivar
4	Jirouf 13	9	Safi Abad 1	14	Fars Local Cultivar
5	Oltan	10	Ahwaz Local Cultivar	15	Khondab Local Cultivar

Table 2. Characteristics of the study sites.

Area	Longitude	Latitude	Elevation AMSL (m)	Annual range of temperature (°C)	Mean annual precipitation (mm)
Arak	49°46′E	34°06′N	1708	−3.0 to 39.8	341.7
Birjand	59°12′E	32°52′N	1491	−0.5 to 42.5	170.8
Karaj	50°54′E	35°55′N	1312	−0.4 to 40.7	243.8
Shiraz	52°36′E	29°32′N	1484	0.6 to 41.2	346

Table 3. ANOVA of grain yield.

Source	df	SS	MS	F value		p value
Location	3	13,860.5010	4620.1670	4.03	*	0.0260
Year	1	543,333.5672	543,333.5672	473.72	***	<0.0001
Year × Location	3	25,165.7844	8388.5948	7.31	**	0.0026
Rep (Year × Location)	16	18,351.2923	1146.9558	2.04	*	0.0119
Genotype	14	243,646.7522	17,403.3394	30.96	***	<0.0001
Location × Genotype	42	57,506.6640	1369.2063	2.44	***	<0.0001
Year × Genotype	14	158,862.5046	11,347.3218	20.19	***	<0.0001
Year × Location × Genotype	42	46,514.7550	1107.4942	1.97	***	0.0009
Error	224	125,899.588	562.052
C.V.: 13.65%

ns: non-significant.

*p < 0.05, **p < 0.01, ***p < 0.001.

Table 4. AMMI analysis of variance of grain yield of sesame genotypes.

Source	df	SS	MS	F value		p value	G × E explained (%)	Cumulative (%)
Rep	2	166.2842	83.1421	0.24	ns	0.7858
Genotypes	14	6929.2844	8701.6369	25.28	***	<0.0001
Locations	3	121,822.9161	2309.7615	6.71	***	0.0003
Interactions	42	28,753.0316	684.5960	1.99	**	0.0021
IPC1	16	16,151.36	1009.46	2.93	***	0.00043	56.1727	56.1727
IPC2	14	8303.78	593.13	1.72	ns	0.05971	28.8797	85.0524
Residuals	12	4297.89	358.16	1.04	ns	0.41710	14.9476	100
Error	118	40,620.9040	344.2449
C.V.: 10.69%

ns: non-significant; asterisks indicate significant differences.

**p < 0.01, ***p < 0.001.

Figure 1. Scatterplot of IPC1 vs. grain yield in AMMI analysis.

Figure 2. Scatterplot of IPC1 vs. IPC2 in AMMI analysis of grain yield.

Table 5. Grain yield average, IPC scores, ASV and GSI sesame genotypes and test locations.

Genotype/location name	Type	Yield Avr. (g/m^2)	Rank (RYi)	IPC1	IPC2	ASV	ASV rank (RASVi)	GSI
Dashtestan 5	G1	171.610	9	0.25049	3.71316	3.74	7	16
TS-3	G2	115.986	15	−3.51038	−0.48069	6.84	13	28
Yellow white	G3	120.839	14	−3.71547	−1.74621	7.43	15	29
Jirouf 13	G4	164.052	12	−0.01819	0.73162	0.73	1	13
Oltan	G5	164.968	11	1.82856	1.78461	3.98	8	19
Darab 2	G6	169.578	10	1.66579	0.15215	3.24	6	16
Darab 1	G7	186.241	7	2.17715	−1.27366	4.42	9	16
Darab 14	G8	203.629	1	−0.90805	0.83110	1.95	2	3
Safi Abad 1	G9	195.274	5	−0.93554	−1.23075	2.20	4	9
Ahwaz Local Cultivar	G10	189.667	6	−1.08880	0.70690	2.23	5	11
Sirjan Local Cultivar	G11	153.798	13	2.21892	−2.71609	5.10	10	23
PF3	G12	177.290	8	−3.26590	−0.81821	6.40	12	20
Isfahan Local Cultivar	G13	197.057	3	−0.59177	1.59731	1.97	3	6
Fars Local Cultivar	G14	196.656	4	3.20683	−3.46214	7.13	14	18
Khondab Local Cultivar	G15	197.808	2	2.68635	2.21091	5.67	11	13
Arak	E1	181.190	1	−2.16974	−2.84247	5.09	1	2
Birjand	E2	164.073	4	−3.78174	−2.35659	7.72	3	7
Karaj	E3	173.306	3	7.25680	−0.96857	14.15	4	7
Shiraz	E4	175.952	2	−1.30532	6.16764	6.67	2	4