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您的检索式：作者名="Esteban F.Rios"
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| 1 | Seashore paspalum (Paspalum vaginatum Sw.) performance under shade in multi-environment trials显示文摘Shade caused by trees or buildings can affect the quality and growth of turfgrasses.Thus,breeding for shade tolerance is an essential component of most turfgrass improvement programs.The objective of this study was to evaluate the performance of seashore paspalum(Paspalum vaginatum Sw.)breeding lines under shade in multi-environment trials.Germplasm sources were 20 lines from the University of Georgia seashore paspalum breeding program and two checks,the cultivars'SeaDwarf'and'SeaStar'.Field trials were conducted from 2016 to 2019 under shade structures designed to reduce ambient sunlight at three locations:Citra(FL),Tifton(GA),and Raleigh(NC).The response variables evaluated were percent living ground cover(%GC),dark green color index(DGCI),canopy height(CH)and turfgrass quality(TQ).Data were analyzed by mixed model approaches using ASReml-R,and the t-statistics were used to group the entries.Significant genetic variances were observed in the single-location-repeated-measures analysis for CH and DGCI at Citra and Tifton,%GC at Citra,and TQ at Raleigh.Spearman correlations of the predicted values for entries between locations ranged from low to moderate,with the exception of between Citra and Tifton(0.76)for CH.There were a few breeding lines with superior performance to the entry average for all traits for which the entry variance was significant.In conclusion,genetic variability was observed for all traits and superior seashore paspalum breeding lines for multiple traits were identified under shade. | Beatriz Tome Gouveia Paul Raymer Brian M.Schwartz Esteban F.Rios Kevin E.Kenworthy J.Bryan Unruh Charles Fontanier Esdras M.Carbajal Jason Kruse Natasha K.Restuccia Susana R.Milla-Lewis | 2021 | Grass Research2021，1，1： | 0 |
| 2 | Breeding for drought tolerance in perennial ryegrass(Lolium perenne L.)and tall fescue(Lolium arundinaceum[Schreb.]Darbysh.)by exploring genotype by environment by management interactions显示文摘Background:Drought‐tolerant turfgrass cultivars are becoming more important each year as landscape irrigation practices are becoming more restrictive.Methods:In this study,we quantified the level of drought tolerance(DT)in perennial ryegrass and tall fescue genotypes across years under different mowing(MH)and fertility(FL)rates.A total of 48 ryegrass and 38 tall fescue genotypes were planted in 2011 at NexGen,Albany,OR.The trial was divided into three subtrials:(i)DT;(ii)MH and DT;and(iii)FL and DT.Results:The results showed that there was significant genetic variance for most of the traits in both species.The genotype×year interaction was predominantly simple,indicating small changes in genotype ranking for both species.Lower MH improved DT in perennial ryegrass,whereas higher MH resulted in greater DT in tall fescue.For both species,higher MH improved the population mean for turf quality.Higher FL inputs led to higher turf quality for both species,but it did not affect the DT response.Conclusions:Using a selection index,six genotypes for perennial ryegrass and four for tall fescue were selected. | Claudio C.Fernandes Filho Mario H.Murad Leite Andrade Jose A.Rodrigues Nunes Joseph Wipff Debra L.Hignight Esteban F.Rios Kevin Kenworthy Kenneth Hignight | 2023 | Grassland Research2023，2，1： | 0 |
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