Stability parameters for yield of maize synthetic populations of different cycles of selection

Lopandic, D.; Kraljevic-Balalic, M.; Ivanovic, M.; Drinic, G.

Stability parameters for yield of maize synthetic populations of different cycles of selection

1996

Lopandic, D. (Agricultural Estate "Semberija", Bijeljina (Bosnia and Herzegovina)) | Kraljevic-Balalic, M. | Ivanovic, M. | Drinic, G.

The efficiency of HS and combined HS-FS i.e. S1 recurrent selection was studied while improving grain yield and combining ability of two synthetic populations of different genetic background (ZPSynEP and ZPSyn1). Stability parameters were determined after Eberhart and Russell (1966). The standard regression coefficient (bi) in synthetics per se and test crosses points to stability of the traits, as its values did not significantly differ from unity. The value of this coefficient in the synthetic per se ZPSyn1 of C0-C3 selection cycles decreased with each succeeding cycle of selection. The most stable yield of test crosses was found in ZPSyn1 C2xB84 (bi=0.96). The increased grain yield of test crosses of succeeding cycles of synthetic selection was followed by their better response to more favourable environmental conditions.

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