Study on heterosis and inbreeding depression in maize (Zea mays L.)
A study was undertaken to investigate the heterosis and inbreeding depression in 21 hybrids (F1) and their F2s produced by crossing seven maize inbreeds in all possible combinations, excluding reciprocal. . The crosses VL-1016556 × CML-171 and VL-1016556 × KL-153237 were identified as the best F1s as they showed superiority for grain yield per plant over the check. The highest heterobeltiosis (Hb) was recorded by hybrids VL-1016556 × KL-153237 and VL-1016556 × CML-171 while hybrids VL-1016556 × KL-153237 and VL-1016556 × CML-171 exhibited the highest economic heterosis (Hc). Keeping the greater magnitude of heterosis, high mean performance and lesser inbreeding depression (less than 15%) into consideration, five crosses, namely, VL-1016556 × BHU-N5, VL-1016556 × CML-171, VL-1016556 × CML-161, CML-171 × BHU-N5 and VL-1016556 × BHU QPM-3 were identified as best hybrids..
Keywords: Heterosis, Inbreeding, Maize and Hybrids
Study on heterosis and inbreeding depression in maize Zea mays L.. 2023. Electronic Journal of Plant Breeding, 13 4, 1365-1371. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4438
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