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Infra-red thermography as new tool for screening Fusarium wilt resistance in pea

AutorRispail, Nicolas ; Rubiales, Diego
Palabras clavelnfra-red thermography
Fusarium wilt
Disease resistance
Pisum sativum
Fecha de publicaciónjun-2015
Citación1st General meeting COST FA1306 (2015)
ResumenThe recent development of image-based phenotyping such as the evaluation of surface temperature by infra-red imaging system is revolutionizing agriculture and plant science. lnfra-red thermography is a non-contact, non-destructive and rapid technique which provides a temperature map of the targeted material or plant. Plant surface temperature is dependent on transpiration rate which is directly related with its physiological status. Thus it has been largely applied to monitor plant water status and to identify stressed plants. This approach was also successfully used to screen for drought or salinity tolerance. To determine whether infra-red thermography could also be useful for disease resistance breeding, we monitored surface leaf temperature of severa! pea accessions with contrasting response to Fusarium wilt, one of its major constraints. lnoculation with Fusarium oxysporum f. sp. pisi induced a significant temperature increase of at least 0.5 oc after 1 O days in the susceptible pea accessions, while the temperature of resistant accessions remained at control leve!. The in crease in leaf temperature at 1 O days post-inoculation was positively correlated with the AUDPC calculated over a 30 days period. Thus, this approach allowed the early discrimination between resistant and susceptible accessions. As such, applying infra-red imaging system in breeding for Fusarium wilt resistance would contribute to considerably shorten the process of selection of novel resistant sources.
DescripciónTrabajo presentado en la 1st General meeting COST FA1306 (The quest for tolerant and stable varieties - Phenotyping at plant and cellular level), celebrada en Gatersleben (Alemania) del 22 al 24 de junio de 2015.
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