Summary
Two collections of inbred lines were divided into early (E), medium (M) and late (L) germinating lines, on the basis of days to germination under growth-cabinet conditions at 8°C and 6°C constant temperatures. Tolerance of low temperatures was found to be an heritable trait and characteristic of each inbred line.
When the inbreds and F1s were tested at 6°C the single crosses of early germinating lines showed earlier germination than crosses between slow germinating lines. Thus the performance of F1s greatly depends on the parental lines used in the crosses.
Differences observed in some of the reciprocal crosses were attributed to maternal effects.
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Maryam, B., Jones, D.A. The genetics of maize (Zea mays L.) growing at low temperatures. I. germination of inbred lines and their F1s. Euphytica 32, 535–542 (1983). https://doi.org/10.1007/BF00021466
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DOI: https://doi.org/10.1007/BF00021466