. 2013 Mar 4;8(3):e57853. doi: 10.1371/journal.pone.0057853

Table 1. Comparison of thousand-grain weight (TGW) (g) across the 12 environments and an evaluation of treatment means (TMTGW), genotypic variance components (δ ² _G) and broad sense heritabilities (H ²) of TGW in the 94 varieties cultivated under four different conditions.

Environment¹	Min	Max	Mean²	TMTGW³	δ ² _G	H ²
08/09HS-IF	35.7	55.7	45.7±4.1	45.6±4.4 a	13.8	0.81
09/10HS-IF	34.7	60.5	47.7±4.4
09/10JY-IF	31.9	54.9	43.3±4.7*
08/09HS-RF	27.2	46.5	35.5±3.5	37.1±3.8 c	11.2	0.74
09/10HS-RF	29.9	46.7	37.1±3.4
09/10JY-RF	26.9	47.9	38.7±4.4
08/09HS-RN	33.2	48.9	39.7±3.5	39.4±3.7 b	12.1	0.75
09/10HS-RN	30.3	50.2	40.3±3.7
09/10JY-RN	28.3	46.9	38.2±3.9*
08/09HS-RP	31.5	47.6	39.3±3.3	38.5±3.7 b	11.7	0.72
09/10HS-RP	28.5	50.6	39.6±3.9
09/10JY-RP	25.7	46.4	36.6±4.4*

The 12 environments were created by testing each of the four treatments (IF, RF, RN, and RP) in three crop cycles in Hengshui (HS) and Jiyuan (JY). IF, RF, RN, and RP refer to irrigated and fertilised, rainfed, reduced nitrogen, and reduced phosphorus treatments, respectively;

The mean TGW in JY was significantly lower than that in HS under the IF, RN, or RP conditions (P≤0.05);

Values marked with dissimilar letters were statistically significant (P≤0.05).

Table 1. Comparison of thousand-grain weight (TGW) (g) across the 12 environments and an evaluation of treatment means (TMTGW), genotypic variance components (δ 2 G) and broad sense heritabilities (H 2) of TGW in the 94 varieties cultivated under four different conditions.

Table 1. Comparison of thousand-grain weight (TGW) (g) across the 12 environments and an evaluation of treatment means (TMTGW), genotypic variance components (δ ² _G) and broad sense heritabilities (H ²) of TGW in the 94 varieties cultivated under four different conditions.