Abstract
Seven F1 hybrids of Antirrhinum majus were grown in a range of environments and measurements were made of the time from sowing to budding and of the time from budding to flowering. The time to budding of all cultivars varied with environment, but was always longer for late-flowering types. The time from budding to flowering changed with environment in the early-flowering cultivars. This period was shorter and apparently independent of environment in the late-flowering types. The possibility of selecting types which combine the short vegetative phase of the early-flowering cultivars with the lower time for inflorescence development of the late ones is discussed.
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