Chilling requirement of commercialEchinaceaseed
- 1 March 1996
- journal article
- other
- Published by Taylor & Francis in New Zealand Journal of Crop and Horticultural Science
- Vol. 24 (1) , 109-114
- https://doi.org/10.1080/01140671.1996.9513942
Abstract
This study aimed to determine the effect of the moist chilling of seed on germination of Echinacea angustifolia DC. and Echinacea purpurea (L.) Moench, and the effect of seed coat trimming on the germination of E. angustifolia. Seed of E. angustifolia stratified for more than 2 weeks achieved maximum germination rates of 65–80%. Maximum germination rates of E. purpurea (84%) were unaffected by periods of stratification. The time to maximum germination declined as the length of the stratification period increased. Trimming the seed coat of E. angustifolia had no significant effect on the germination rate of unstratified seed, but halved the germination rate of seed stratified for more than 2 weeks.Keywords
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