144-10 Tolerance to Saline, Waterlogging, and Their Combined Stress in Kentucky Bluegrass Cultivars.

Poster Number 1005

See more from this Division: C05 Turfgrass Science
See more from this Session: Graduate Student Poster Competition: Turfgrass Breeding and Genetics, Stress Tolerance

Monday, November 16, 2015
Minneapolis Convention Center, Exhibit Hall BC

Kevin Rue, Department of Plant Sciences, North Dakota State University, Fargo, ND and Qi Zhang, North Dakota State University, Fargo, ND
Poster Presentation
  • ASA poster - Kevin.pdf (137.0 kB)
  • Abstract:
    Abstract

              

    High soil salinity and waterlogging, alone or co-occurring, are common problems in turfgrass management. Eight Kentucky bluegrass cultivars were exposed to four growing conditions during the seedling stage (3 weeks old) for six weeks (Study I): control (i.e. non-stress), saline (NaCl = 3 dS/m), waterlogging (pots flooded with tap water), and saline-waterlogging (pots flooded with NaCl at 3dS/m). Shoot dry weight was not affected by growing-condition, cultivar, or their interaction. A growing-condition x cultivar interaction was observed in root dry weight. Root dry weight was less affected under the control and waterlogging conditions, comparing to saline and saline-waterlogging. Little variations were observed in relative root growth in Kentucky bluegrass cultivars under each condition. As the salinity level increased to 6 dS/m in Study II, plants showed severe damage after three weeks of stress exposure. Similar to Study I, shoot growth was not influenced by either main factors or their interaction. Root dry weight was affected by cultivar, in which ‘Moonlight’ and ‘Arrowhead’ had the highest and lowest root growth, respectively.

    See more from this Division: C05 Turfgrass Science
    See more from this Session: Graduate Student Poster Competition: Turfgrass Breeding and Genetics, Stress Tolerance