Full TGIF Record # 333508
Item 1 of 1
Web URL(s):https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/152820
    Last checked: 12/06/2023
Publication Type:
Content Type:Abstract or Summary only
Author(s):Busey, Philip
Author Affiliation:Presenting Author and Phil Busey Agronomy Consulting, Davie, FL
Title:Biology, detection, and management of bermudagrass off-types in certification
Section:Turfgrass breeding, genetic, molecular biology, microbiome oral II
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C05 turfgrass science
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Meeting Info.:St. Louis, Missouri: October 29-November 1, 2023
Source:ASA, CSSA, SSSA International Annual Meeting. 2023, p. 152820.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Bermudagrasses (Cynodon dactylon and hybrids) have a large daily growth rate (9.2% RGR) in vegetative propagation. Genetic off-types can escape detection in mixtures of rhizomes and stolons and can spread rapidly and possibly at differential growth rates. Turfgrass cultivar protection requires an organized system to prevent and control contamination and spread of off-types in individual fields, and in expansion across certification Classes, and throughout the entire theater of cultivar release, expansion, and distribution. During 6 years of inspecting more than 200 bermudagrass sod fields in Florida, rejection of fields of 8 major cultivars averaged 7.4% on the basis of hectares rejected. Specific and recurring instances of off-type occurrence in fields applied for as Certified Class were consistent with contamination as infected planting stock from Registered Class fields which had a slightly higher rejection rate of 8.3%. Experimental planting of off-types in bermudagrass plots showed that stolons and rhizomes can infiltrate, persist, and might form patches large enough for detection after control is too late. Education of producers and staff should emphasize the urgency of thorough killing of off-types as soon as they are recognized, and by effective, repeated methods, followed by reinspection. Research is needed to improve diagnostically useful morphological description of cultivars for inspection, currently by human visual observation. Turfgrass breeders, experiment stations, and private developers are responsible to protect turfgrass genetic homogeneity through stewardship of Breeder Class germplasm in designated, stringently maintained repositories, and support of end-to-end chain of custody by independent third-party AOSCA seed certification."
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Busey, P. 2023. Biology, detection, and management of bermudagrass off-types in certification. Agron. Abr. p. 152820.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=333508
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    Last checked: 12/06/2023
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