TABLE 2

First- and second-degree statistics for maize testcross progenies of parent lines (P1 and P2) and 976 F5 lines from cross P1 × P2 for grain yield and grain moisture evaluated in 19 environments and plant height evaluated in 16 environments

ParameterEntry nos.Grain yield (Mg ha–1)Grain moisture (g kg–1)Plant height (cm)
Testcross meansa
    P12110.78 ± 0.10b196.2 ± 1.37266.5 ± 2.33
    P21810.94 ± 0.12211.7 ± 1.61274.8 ± 2.43
        3910.85 ± 0.08203.4 ± 1.07270.8 ± 1.68
    F5 lines97610.66 ± 0.01205.4 ± 0.24270.7 ± 0.20
    Range of F5 lines9.46–11.80178.3–230.9251.5–290.8
Variance components
        Embedded Image 0.080 ± 0.006**51.47 ± 2.53**34.78 ± 1.77**
        Embedded Image 0.861 ± 0.00985.19 ± 0.9170.00 ± 0.82
Heritability
        Embedded Image 0.0850.380.33
        h 2 0.640.920.89
    95% C.I.c on h20.60, 0.670.91, 0.930.88, 0.90
  • ** Significant at the 0.01 probability level.

  • a = TC mean of P1 and P2.

  • b Standard errors are attached.

  • c Confidence interval.