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Evaluation of the Combining Ability of Inbred Lines Derived from Purple Waxy Maize (Zea mays L.) Germplasm
General combining ability effect for agronomic characters of tester inbred lines
General combining ability effect for agronomic characters of tester inbred lines

Author:Guang-Jauh Shieh*, Wen-Long Tsaur and King-Hsing Yang

Abstract:

    Determination of the relative combining ability of purple waxy maize (Zea mays L.) inbred lines is all important feature of applied corn breeding program. Combining ability measured by the relative performance of a line in testcrosses to five testers. CIMMYT CML76 inbred line and Tainan-white inbred lines (TNWE, TNWF, TNWG, TNWH) with white non waxy endosperm were used as tester. The inbred line were derived from Taichung purple waxy (PB) population, evaluated at S5 generation. The results indicated significant differences existed in the general combining ability of agronomic characters among tester and tested inbred lines. Based on the coefficient variation among testers, estimate of combining ability, the CML76, TNWF and TNWG inbred lines were the better testers for this trial. The inbred line, PB4, PB5, PB13, PB15, PB16, PB17, PB19, PB24, PB29 and PB31 had the positive general combining ability, and that can used in hybrid breeding program in future.

Key words:Purple waxy, Maize, Inbred line, Combining ability test

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Journal of
Taiwan Agricultural Research
Vol. 73, No.1 (2024) ISSN: 2790-086X Vol. 73, No.1 (2024)
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