Yield, persistence and field disease assessment of lucerne cultivars and lines under irrigation in the Queensland subtropics [Colletrichum trifolii; Phytophthora megasperma; disease resistance]
1987
Lowe, K.F. | Bowdler, T.M. (Queensland Dept. of Primary Industries, Ipswich (Australia)) | Gramshaw, D. (Queensland Dept. of Primary Industries, Brisbane (Australia)) | Clem, R.L. | Collyer, B.G. (Queensland Dept. of Primary Industries, Biloela (Australia). Biloela Research Station)
In field trials the Queensland-bred cultivars Trifecta and Sequel were more persistent than, and as productive as the best of the imported American cultivars. They combined good yielding potential with considerable resistance to both anthracnose (Colletotrichum trifolii) and root rot (Phytophthora megasperma f. sp. medicaginis). Other superior cultivars and lines were UC 193, Granada, Maxidor 2, Matador, Pioneer 5929 and Baron, all of which had winter active or highly winter active growth characteristics, and high resistance to root rot, but lower resistance to anthracnose than Trifecta and Sequel. Yield of cultivars and lines was related to winter activity level, and to Phytophthora and Colletotrichum resistances. The implications of these results for commercial lucerne production are discussed.
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