Growth and reproduction of Hypochoeris radicata L.
2006
Doi, M.(Kyoto Univ. (Japan)) | Ito, M. | Auld, B.A.
Hypochoeris radicata L. (Asteraceae) is a perennial, native to Europe, and is widespread in several countries. The objective of the present study was to reveal the life history characteristics of H. radicata by focusing on its reproductive strategy. Flowering, seed-setting, and vegetative propagation of the species were observed in pots. Reproductive propagation of the species also was investigated in natural populations. The light and temperature requirements for seed germination were examined. The species germinated in temperatures ranging from 10-30 deg C, both in light and dark. With plants grown in pots, reproductive growth started when the rosette diameter reached =14-16 cm. Flowering was not day length-related, but it possibly was related to temperature. In natural populations, the flowering and seed-setting periods continued for 6 months. Vegetative propagation occasionally occurred in plants with three or more shoots by the crown splitting below ground level.
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