Full TGIF Record # 315276
Item 1 of 1
Web URL(s):https://scisoc.confex.com/scisoc/2020am/meetingapp.cgi/Paper/125842
    Last checked: 03/25/2021
    Requires: PDF Reader
Publication Type:
Content Type:Abstract or Summary only
Author(s):Porto, Antonio Carlos M.; Paudel, Dev; Gouveia, Beatriz T.; Kenworthy, Kevin E.; Kruse, Jason K.; Munoz, Patricio R.; Schwartz, Brian M.; Novaes, Evandro; Milla-Lewis, Susana R.; Rios, Esteban F.
Author Affiliation:Porto: Agronomy, University of Florida, Gainesville, FL and Biology, Universidade Federal de Lavras, Lavras, Brazil; Paudel, Kenworthy, and Rios: Agronomy, University of Florida, Gainesville, FL; Gouveia and Milla-Lewis: Crop and Soil Sciences, North Carolina State University, Raleigh, NC; Kruse: Environmental Horticulture Department, University of Florida, Gainesville, FL; Munoz: Agronomy Department, University of Florida, Gainesville, FL; Schwartz: Department of Crop and Soil Sciences, University of Georgia-Tifton, Tifton, GA; Novaes: Biology, Universidade Federal de Lavras, Lavras, Brazil
Title:Multi-environment evaluation of St. Augustinegrass genotypes under shade
Section:Turf physiology, molecular biology, and genetics (includes student presentation)
Other records with the "Turf physiology, molecular biology, and genetics (includes student presentation)" Section

C05 Turfgrass Science
Other records with the "C05 Turfgrass Science" Section
Meeting Info.:San Antonio, Texas: November 10-13, 2019
Source:ASA, CSSA and SSSA International Annual Meetings. November 9-13 2020, p. [1].
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Shade causes numerous morphological and physiological changes to turfgrass growth. These changes may vary temporarily in the same genotype (development stage) and depending to environmental conditions. Thus, testing germplasm at different stages of development and environments, we can select genotypes adapted to the broad range of environments and/or specific environments. Thus, the objective of this study was to evaluate the performance of genotypes from three different St. Augustinegrass (Stenotaphrum secundatum) breeding programs under shade conditions. Field trials were conducted during 2016 - 2019 in three locations across the southeastern United States: Citra (FL), Tifton (GA) and Jackson Springs (NC). Shade structures were made to reduced 90% of ambient sunlight to evaluate 42 experimental genotypes following a randomized complete-block design with 3 replications in Citra and Tifton, and 2 in Jackson Springs. Four traits were measured: a visual rating of turfgrass quality (TQ) on a 1-9 scale, percent green cover (PC), canopy height (H) and dark green color index (DGCI). Variance components and genetic parameters were calculated using linear mixed models in ASReml-R. The highest broad-sense heritabilities at plot level were estimated for TQ (0.58 - 0.10) and the lowest for DGCI (0.00 - 0.18). Among environments, it was observed, systematically, lower heritabilities in all traits in Jackson Springs (0.05 - 0.10). A high genetic correlation was observed between the traits TQ and PC at all trials (0.90 0.96), and an intermediate correlation among TQ, PC and H in Jackson Springs and Citra (0.33 0.53), different of Tifton, where were estimated non-significant correlations among these traits (0.02 0.13). Analyzing the eigenvectors of the environments arranged in PCA-biplot, it was possible to observe greater autovariation between the Jackson Spring and Citra, that becomes more evident by the responsive performance of better and worse adapted genotypes."
Note:This item is an abstract only!
Pictures, color
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Porto, A. C. M., D. Paudel, B. T. Gouveia, K. E. Kenworthy, J. K. Kruse, P. R. Munoz, et al. 2020. Multi-environment evaluation of St. Augustinegrass genotypes under shade. Agron. Abr. p. [1].
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=315276
If there are problems with this record, send us feedback about record 315276.
Choices for finding the above item:
Web URL(s):
    Last checked: 03/25/2021
    Requires: PDF Reader
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)