Resistance of White Lupin (Lupinus albus) Cultivars to Wilt caused by Fusarium oxysporum f. sp. lupini
1983
SALLEH, B. B. | Owen, H.
Fusarium oxysporum f. sp. lupini was more aggressive in summer than in autumn on all 15 white lupin cultivars tested. Race 3 was more aggressive than races 1 and 2. Cultivars Blanca, von Baer and WB1 are proposed as “primary differential hosts”. The development of race 3 in the xylem was more profuse in cultivars Astra and Neuland (susceptible) than in cv. Primorskij (resistant). There was a direct relationship between disease severity and number of colonies of race 3 recovered from the infected plants. F. oxysporum never colonized seeds internally. Amorphous gum‐like substances, not tyloses, occluded xylem vessels of infected plants. Differences in resistance are apparently not due to this occlusion.
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