Full TGIF Record # 317150
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/134628
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Rios, Esteban F.; Fernandez, Claudio Carlos; Murad Leite Andrade, Mario Henrique; Rodriguez Nunez, Jose Airton; Wipff, Joseph; Hignight, Debra L.; Hignight, Kenneth W.
Author Affiliation:Fernandez and Rodriguez Nunez: Biology, Universidade Federal de Lavras, Lavras, Brazil; Rios and Murad Leite Andrade: Agronomy, University of Florida, Gainesville, FL; Wipff: NexGen Plant Science Center, LLC, Albany, OR; Debra L. Hignight and Kenneth W. Hignight Hignight: NexGen Turf Research, LLC., Albany, OR
Title:Genotype by environment by management study reveals potential for developing drought-tolerant perennial ryegrass
Section:Turfgrass physiology, molecular biology, and genetics poster (includes student competition)
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C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 134628.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Perennial ryegrass (Lolium perenne L.) is one of the most planted turfgrass species in temperate regions around the world. It provides a quick cover with pleasant aesthetic attributes such as dark green color. However, it generally fails to thrive under water-stress conditions. Water limitation is a major abiotic stress in agriculture and its impact is expected to intensify in the future, moreover, turfgrass is the most irrigated crop in USA. The study goal was to quantify the level of drought tolerance in breeding lines when exposed to short periods of drought. For this, 48 ryegrass genotypes were planted in 2011 at NexGen Plant Science Center LLC., Albany, OR. In 2012 and 2013, the plots were evaluated after irrigation was withheld, until all plots reach 25% of green cover. After the irrigation was resumed until plots reach 100% green cover. The green cover was evaluated using digital image analysis. Three other traits were also assessed: turfgrass color (TC), density (TD), and quality (TQ). Our findings showed there was genetic variability among the genotypes for all traits except for TD, and the effect of the interaction between genotypes and years was significant for all traits. Heritability ranged from 0.11 (TD) to 0.89 (TC). Despite the significant GxE, the ranking of the genotypes did not change over years, as the genetic correlation were high for most of the traits. Based on the index of selection, was possible to identify six breeding lines with higher performance than the overall mean for ryegrass, and the breeding lines performed better than most of the cultivars used as checks. Results showed that these breeding lines exhibited drought tolerance and improved turf quality under drought."
Note:This item is an abstract only!
"Poster #1254"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fernandez, C. C., M. H. Murad Leite Andrade, J. A. Rodriguez Nunez, J. Wipff, D. L. Hignight, K. W. Hignight, et al. 2021. Genotype by environment by management study reveals potential for developing drought-tolerant perennial ryegrass. Agron. Abr. p. 134628.
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