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ARS Home » Southeast Area » Canal Point, Florida » Sugarcane Field Station » Research » Publications at this Location » Publication #406455
Research Project: Understanding and Incorporating Disease Resistance into New Sugarcane Cultivars

Location: Sugarcane Field Station

Title: Effect of sugarcane yellow leaf virus in the second clonal stage of the Canal Point cultivar development program

Author
item Sood, Sushma
item Gordon, Vanessa
item Coto Arbelo, Orlando

Submitted to: International Sugar Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/22/2023
Publication Date: 6/9/2023
Citation: Sood, S.G., Gordon, V.S., Coto, O. 2023. Effect of sugarcane yellow leaf virus in the second clonal stage of the Canal Point cultivar development program. International Sugar Journal. 148:408-411. https://doi.org/10.36961/si29966.
DOI: https://doi.org/10.36961/si29966

Interpretive Summary: Sugarcane yellow leaf virus (SCYLV) is an economically significant pathogen causing yield losses of up to 50% in susceptible clones. Clones in the second clonal stage (Stage 2) of the Canal Point Cultivar Development Program (CPCDP) and reference cultivars were screened to determine SCYLV infection using tissue-blot immunoassay. Eleven percent of clones in Stage 2 were infected with the SCYLV. The severity of SCYLV ranges from infection to 20-100% of plants. The 1534 test clones were derived from 400 crosses that utilized 127 female and 86 male parents in various combinations; 70% of these crosses and 46% of the males, and 54% of the females produced SCYLV-free clones. The results show that SCYLV can infect many susceptible clones in less than three years of exposure from seed germination to Stage 2. However, the effect of SCYLV infection on yield was insignificant in this study. Therefore, selecting the SCYLV-resistant cultivars is not needed in the CPCDP. The yield losses from SCYLV should be limited by planting virus-free seed cane and good agronomic practices in Florida.

Technical Abstract: Sugarcane yellow leaf virus (SCYLV) is an economically significant pathogen that can cause yield losses of 11% to 50% in susceptible clones. Clones (1534) in the second clonal stage (Stage 2) of the Canal Point Cultivar Development Program (CPCDP), three reference cultivars, CP78-1628, CP96-1252, and CP00-1101, and three disease-spreader cultivars, CP88-1762, CPCL02-6848, and CP01-2390, were screened to determine SCYLV infection using tissue-blot immunoassay. One hundred seventy-three clones (11%) were infected with the SCYLV, 29 had 100% SCYLV infection, 19 had 80%, 30 had 60%, 38 had 40%, 57 had 20% of SCYLV infection, and 1361 clones had no SCYLV (0%) infection. The 1534 test clones were derived from 400 crosses that utilized 127 female and 86 male parents in various combinations: 70% of these crosses, 46% of the males, and 54% of the females were related to SCYLV-free clones. The reference and disease-spreader cultivar CPCL02-6848 had 48% infection, followed by CP88-1762 with 38% infection, CP96-1252 with 13% infection, CP01-2390 with 6% infection, CP00-1101 with 5% infection, and CP78-1628 with 3%. The results show that SCYLV can infect many susceptible clones within 3 years of exposure from seed germination to Stage 2. However, the effect of SCYLV infection on yield was not significant in this study. Therefore, the yield losses from SCYLV should be limited by planting virus-free seed cane and good agronomic practices in Florida.