Abstract/Details

Testing of clonal bermudagrass cultivars and experimental genotypes for differences in drought performance


2010 2010

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Abstract (summary)

Scope and Method of Study. Bermudagrass is used in many parts of the world as a forage crop and as turfgrass in sports fields, golf courses and lawns. Selection and identification of drought resistant bermudagrass cultivars under acute or chronic drought stress is important for sustainable turfgrass management and water conservation. The objective of this research were to: (1) identify differences in overall field drought performance of selected industry standard and OSU experimental bermudagrass entries; and (2) evaluate and explain differences in root growth characteristics of selected clonal industry standard and OSU experimental bermudagrass entries. This research was conducted at the Oklahoma State University Turfgrass Research Center in Stillwater, OK. Twenty-three clonal bermudagrasses were used in the field study for objective 1 while eight clonal bermudagrasses were used in the greenhouse study for objective 2.

Findings and Conclusions. Based on the overall results from the field study, the hypothesis that were differences in bermudagrass entries for their field drought performance was accepted. At the 0% ET irrigation level, the OSU experimental bermudagrasses that performed lower than Celebration but better than all other entries were #2, #12, #16, #24, and #27. At the 33% ET irrigation level, Celebration, #2, #12, and #27 performed better than all other bermudagrass entries. Based on the overall results from the greenhouse study, the hypothesis that there were differences in bermudagrass entries for their root growth characteristics was accepted. Celebration, OKC 1119, and #2 have great genetic potential for improved drought performance if proper root growth occurs during the year before a drought event. Tifsport, Patriot, and #12 did not perform as well as Celebration, OKC 1119, and #2 in this study and thus may not have great genetic potential for improved drought performance due to rooting characteristics.

Indexing (details)


Subject
Horticulture;
Plant sciences
Classification
0471: Horticulture
0479: Plant sciences
Identifier / keyword
Biological sciences; Bermudagrass; Cynodon dactylon; Drought; Leaf firing; Root character; Root shoot ratio; Turf quality
Title
Testing of clonal bermudagrass cultivars and experimental genotypes for differences in drought performance
Author
Poudel, Bishow Prakash
Number of pages
102
Publication year
2010
Degree date
2010
School code
0664
Source
MAI 49/04M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781124510743
Advisor
Moss, Justin Quetone
Committee member
Bell, Gregory E.; Martin, Dennis L.; Wu, Yanqi
University/institution
Oklahoma State University
Department
Horticulture
University location
United States -- Oklahoma
Degree
M.S.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
1489412
ProQuest document ID
857659822
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/857659822
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