New Zealand Journal of Agricultural Research abstracts

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Frost tolerance of Trifolium species

J. R. CARADUS

AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand

Abstract  Thirteen Trifolium species were artificially frosted at -4, -8, -12, and -16deg.C in controlled environment rooms. This was carried out in such a way that soil freezing was avoided and only shoots were frosted. Frost tolerance was primarily assessed as the percentage of dead to total leaf dry weight present 1 week after frosting. Trifolium arvense, T. dubium, and T. hybridum were the most frost-tolerant, whereas T. ambiguum, T. subterraneum, T. glomeratum, T. vesiculosum, and T. cernuum were the most frost-sensitive, based on the temperature required to kill 50% of leaves. Trifolium ambiguum may have been particularly sensitive to frosting because of its poor vigour (size).

Keywords  frost tolerance; clover; Trifolium species; controlled environment

New Zealand Journal of Agricultural Research, 1995, Vol. 38: 157-162

0028-8233/95/3802-0157 $2.50/0 (c) The Royal Society of New Zealand 1995

PDF file of entire paper: medium quality (403K); (scanned from paper original: notes about this process)

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