Full TGIF Record # 316098
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DOI:10.1002/ps.6304
Web URL(s):https://onlinelibrary.wiley.com/doi/full/10.1002/ps.6304
    Last checked: 11/19/2021
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https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.6304
    Last checked: 11/19/2021
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Publication Type:
i
Refereed
Author(s):Maity, Aniruddha; Singh, Vijay; Jessup, Russell; Bagavathiannan, Muthukumar
Author Affiliation:Maity: Department of Soil and Crop Sciences, Texas A&M University, College Station, TX and Division of Seed Technology, ICAR - Indian Grassland and Fodder Research Institute, Jhansi, India; Singh: Department of Soil and Crop Sciences, Texas A&M University, College Station, TX and Eastern Shore Agricultural Research and Extension Center, Virginia Tech, Painter, VA; Jessup and Bagavathiannan: Department of Soil and Crop Sciences, Texas A&M University, College Station, TX
Title:Seed traits correlate with herbicide resistance in Italian ryegrass (Lolium perenne ssp. multiflorum)
Source:Pest Management Science. Vol. 77, No. 6, June 2021, p. 2756-2765.
Publishing Information:Barking, Essex, United Kingdom: Elsevier Science Publishers Ltd.
# of Pages:10
Related Web URL:https://onlinelibrary.wiley.com/doi/abs/10.1002/ps.6304
    Last checked: 11/19/2021
    Notes: Abstract only
Keywords:Author-Supplied Keywords: Diclofop resistance; Pinoxaden resistance; Seed dormancy; Trait correlation; Pleiotropy; Herbicide resistance evolution
Abstract/Contents:"BACKGROUND Italian ryegrass (Lolium perenne ssp. multiflorum) is one of the major winter annual weeds worldwide. In this research, diversity for seed morpho-physiological traits such as seed weight, seed size, awnedness, dormancy, speed of germination, and seed vigor among Italian ryegrass populations collected from the Texas Blacklands region were assessed, and potential association with herbicide resistance was investigated. RESULTS A high degree of diversity was observed among the populations for 100-seed weight (125-256 mg), seed length (4.8-6.6 mm), awn length (0-6 mm), and total seedling length (9-14 cm at 21 days after seed germination). Inter-population range for seed dormancy was higher in the freshly harvested seed (31-85%), which reduced to 18 to 62% at 9 months after harvest. Populations with high initial seed dormancy (> 70% dormancy) released dormancy at a faster rate than the low dormancy group (< 40%). Percent survival status to multiple postemergence herbicides was positively correlated with 100-seed weight and fresh or initial seed dormancy. CONCLUSION Early emerging cohorts are easily controlled by pre-plant tillage and preemergence herbicides, whereas late emerging cohorts (facilitated by seed dormancy) are exposed to postemergence herbicides wherein greater opportunities exist for resistance evolution, likely explaining the occurrence of high seed dormancy in Italian ryegrass populations resistant to postemergence herbicides. High seed weights can further allow seedling emergence from greater burial depth, thereby exposing more seedlings to postemergence herbicides and increasing the likelihood of resistance evolution. Results provide unique insights into the association between seed traits and herbicide resistance in this species."
Language:English
References:75
Note:Pictures, color
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Maity, A., V. Singh, R. Jessup, and M. Bagavathiannan. 2021. Seed traits correlate with herbicide resistance in Italian ryegrass (Lolium perenne ssp. multiflorum). Pest Management Science. 77(6):p. 2756-2765.
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DOI: 10.1002/ps.6304
Web URL(s):
https://onlinelibrary.wiley.com/doi/full/10.1002/ps.6304
    Last checked: 11/19/2021
    Access conditions: Item is within a limited-access website
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ps.6304
    Last checked: 11/19/2021
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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