Plant Breeding and Biotechnology

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Table. 2.

Table. 2.

Mean Squares for yield traits and disease scores obtained from 48 regional maize hybrids and OPV evaluated across greenbelt and ironstone plateau zones over three years (2013-2015) in South Sudan.

Source of variation Df Mean squares
SD ASI PH EH HC FW MOIS TLB MSV GLS STB GY
Location (e) 4 3181.3** 943.9 7528.81** 5744.2** 4.5* 0.4** 1423.0* 4.8** 132.0** 11.0* 23.6* 1301.0**
Year (y) 2 1016.8** 26.3 20812.31 1738.5 1.2 0.6* 1210.0 1.4* 101.6** 2.3 9.4* 926.8*
Location × year 8 23.7** 19.6 916.4* 336.3** 0.7 1.0** 93.1 3.1* 78.2* 6.3 1.7* 111.4**
Rep/location 10 18.4** 20.2** 573.12** 216.0** 1.0* 0.9* 16.8** 1.1** 21.9* 10.2* 12.3 325.1**
Genotype (g) 47 26.8** 2.9 327.07** 529.1** 3.3** 1.7** 15.2** 2.8** 31.8** 17.3** 20.1 278.6**
G × E 188 21.7** 2.1** 717.32** 287.7** 1.1** 2.0** 7.8** 1.6** 0.9** 0.4** 14.9** 135.2**
G × Y 94 15.8 6.1 537.91* 302.4* 0.8 1.3 46.2 0.2 3.2 5.2* 0.4 21.8
G × L × Y 564 9.3* 3.2 211.12* 111.7 0.6 0.8* 21.3 2.1* 1.8 0.7 11.3* 68.3*
Error (ԑ) 705 9.0 2.1 318.6 217.8 0.3 0.3 7.5 0.1 0.6 1.1 0.6 136.2
Total 1439
Mean 72.6 2.4 188.0 99.2 2.1 4.8 23.2 2.1 2.2 1.9 1.2 4.3
CV (%) 4.2 54.9 12.5 20.1 48.0 18.7 32.1 1.8 32.0 20.2 29.3 21.6

*, **Significantly different at 0.05 and 0.01 probability levels.

Df = Degree of freedom; AD = anthesis date; SD = silking date; ASI = anthesis-silking interval; PH = plant height (cm); EH = ear height (cm); EA = ear aspect; HC = husk cover; FW = field weight (kg/plot); MOIS = grain moisture content; TLB = Turcicum leaf blight; MSV = maize streak virus; GLS = gray leaf spot; STB = stem borer and GY = grain yield (t/ha).

Plant Breed. Biotech. 2021;9:124-38 https://doi.org/10.9787/PBB.2021.9.2.124
© 2021 Plant Breed. Biotech.