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Germination and Viability of Common Crupina (Crupina vulgaris) Achenes Buried in the Field

Published online by Cambridge University Press:  12 June 2017

Donald C. Thill
Affiliation:
Dep. Plant, Soil, and Entomol. Sci., Univ. of Idaho, Moscow, ID 83843
David L. Zamora
Affiliation:
Dep. Plant, Soil, and Entomol. Sci., Univ. of Idaho, Moscow, ID 83843
Donald L. Kambitsch
Affiliation:
E. I. DuPont Co., Inc., Kennewick, WA

Abstract

The influence of depth (0 to 20 cm) and duration (1 to 31 months) of burial on the deterioration, germination, and viability of common crupina (Crupina vulgaris Cass. ♯ CJNVU) was investigated in the field. Germination and decay of achenes prior to removal from the field were greater at 0- to 10- (7%) and 0- to 15- (21%) cm burial depths than at the 20-cm burial depth for 1980 and 1981 seedlots, respectively. After 25 months of burial, 41 and 26% of the achenes had not deteriorated for the 1980 and 1981 seedlots, respectively. Germination was greatest for nondeteriorated achenes recovered from 3- and 20-cm (63%) and least for the 10-cm burial depth (44%). Common crupina achenes recovered from the field over 25 months of burial exhibited a pronounced periodicity of germination, which was related to induced winter dormancy. The viability of achenes decreased linearly from 90 to near 0% over 31 months of burial.

Type
Weed Biology and Ecology
Copyright
Copyright © 1985 by the Weed Science Society of America 

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