
TY  - JOUR
A1  - Mackie, J. M. 
A1  - Irwin, J. A. G. 
T1  - The proportion of individual lucerne plants resistant to <emph type="2">Phytophthora medicaginis</emph> and <emph type="2">Colletotrichum trifolii</emph> in Australian cultivars
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1998
VL  - 38
IS  - 1
SP  - 41
EP  - 44
KW  - 
UR  - https://doi.org/10.1071/EA97089 
N2  - Summary. Phytophthora root rot (Phytophthora medicaginis) and colletotrichum crown rot (Colletotrichum trifolii) are the 2 most serious pathogens of lucerne in eastern Australia. Work reported in this paper shows that in glasshouse tests of the 11 most commonly grown Australian lucerne cultivars, the proportion of individual plants with resistance to both pathogens ranges from 0 (Hunter River and Aurora) through to a maximum of 19.8% (Sequel HR). Within 9 of the cultivars, the proportion of individual plants resistant to the 2 pathogens was &#60;7%. Since these 2 diseases are known to cause serious losses in eastern Australia, the results indicate further improvement in lucerne production can be obtained by increasing the proportion of individual plants in a cultivar resistant to both pathogens. This would be best achieved by identifying dominant sources of resistance and incorporating this into on-going lucerne breeding programs. 
ER  -

