Impact of Sugarcane yellow leaf virus on sugarcane yield and juice quality in Réunion Island

Rassaby Laurence, Girard Jean-Claude, Letourmy Philippe, Chaume Jacqueline, Irey Mike S., Lockhart Benham E.L., Kodja Hippolyte, Rott Philippe. 2003. Impact of Sugarcane yellow leaf virus on sugarcane yield and juice quality in Réunion Island. European Journal of Plant Pathology, 109 (5) : 459-466.

Résumé : Sugarcane yellow leaf virus (SCYLV) was first detected in sugarcane of Réunion Island in 1997. A field experiment was undertaken to assess the potential impact of this virus on sugarcane production. The agronomic characteristics of SCYLV-infected plants were compared to those of virus-free plants of three sugarcane cultivars (R570, R577 and R579) which occupy more than 90% of the cultivated sugarcane area on Réunion Island. In the plant crop, significant losses in stalk weight (28%) and in sugar content (11%) were detected for cultivar R577, but not for either of the two other cultivars. In the first ratoon crop, yield reduction was detected for cultivar R577 (37%), but also for cultivar R579 (19%). Cultivar R577 also showed significant losses in sugar content (12%) due to reduced amount and quality of extracted cane juice. No yield reduction was found for cultivar R570, although stalk height and diameter were reduced in SCYLV-infected canes of this cultivar in the first ratoon crop. Leaf yellowing was observed at harvest of plant and ratoon crops when sugarcane was no longer irrigated, and 10-59% of symptomatic stalks could be attributed to the presence of SCYLV. The most severe yellowing symptoms were related to infection of sugarcane by the virus.

Mots-clés Agrovoc : Saccharum, maladie des plantes, virus des végétaux, teneur en glucides, perte de poids, variété, symptome, rendement des cultures, qualité, jus de canne à sucre

Mots-clés géographiques Agrovoc : La Réunion, France

Mots-clés complémentaires : Sugarcane yellow leaf virus

Classification Agris : H20 - Maladies des plantes

Auteurs et affiliations

• Rassaby Laurence, CIRAD-FLHOR-PRH (REU)
• Girard Jean-Claude, CIRAD-CA-Canne à sucre (FRA)
• Letourmy Philippe, CIRAD-CA-DIR (FRA) ORCID: 0000-0003-1040-0860
• Chaume Jacqueline, CIRAD-CA-DIR (FRA)
• Irey Mike S., Sugar Corporation (USA)
• Lockhart Benham E.L., University of Minnesota (USA)
• Kodja Hippolyte, Université de la Réunion (REU)
• Rott Philippe, CIRAD-CA-Canne à sucre (FRA) ORCID: 0000-0001-6085-6159

Source : Cirad - Agritrop (https://agritrop.cirad.fr/515644/)

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