{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/21994"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/21994","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Nitrogen utilization in creeping bentgrass","abstract":"Efficient approaches for screening nitrogen utilization efficiency (NUE) of turfgrasses are needed, since nitrate contamination of ground water is a concern on golf courses. In the first study, the conditions of N utilization of fourteen bentgrass cultivars were compared in hydroponic solution culture. There were significant differences between cultivars in plant tissue dry weight, tissue N content, root absorption efficiency (RAE), and NUE. From a whole plant basis, 'Penncross' accumulated the highest N accompanied with the highest whole plant dry weight (WPDW). 'Regent' had the highest NUE while 'Allure' had the lowest NUE. Nitrogen absorption efficiency values were comparatively higher in 'Allure' than all the other cultivars. Differences in NUE among most cultivars were correlated to plant dry weight.","abstract_html":"Efficient approaches for screening nitrogen utilization efficiency (NUE) of turfgrasses are needed, since nitrate contamination of ground water is a concern on golf courses. In the first study, the conditions of N utilization of fourteen bentgrass cultivars were compared in hydroponic solution culture. There were significant differences between cultivars in plant tissue dry weight, tissue N content, root absorption efficiency (RAE), and NUE. From a whole plant basis, 'Penncross' accumulated the highest N accompanied with the highest whole plant dry weight (WPDW). 'Regent' had the highest NUE while 'Allure' had the lowest NUE. Nitrogen absorption efficiency values were comparatively higher in 'Allure' than all the other cultivars. Differences in NUE among most cultivars were correlated to plant dry weight.","abstract_has_math":false,"creators":["Kuo, Yu-Jen"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Crop Sciences","degree_department":null,"school":null,"contributors":["Fermanian, Thomas W."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:25:34Z","date_published":"2011-05-07T13:25:34Z","updated_at":"2026-07-22T22:25:19Z","subjects":["Agriculture, Agronomy","Biology, Plant Physiology"],"languages":["eng"],"rights":["Copyright 1995 Kuo, Yu-Jen"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9543636","(UMI)AAI9543636"],"render_values":[{"text":"AAI9543636","href":null,"code":true},{"text":"(UMI)AAI9543636","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/21994","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Fermanian, Thomas W."]},{"key":"dc:creator","label":"Author","values":["Kuo, Yu-Jen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:25:34Z","10000-01-01","1995"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Crop Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Agriculture, Agronomy","Biology, Plant Physiology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1995 Kuo, Yu-Jen"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9543636","(UMI)AAI9543636","http://hdl.handle.net/2142/21994"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Efficient approaches for screening nitrogen utilization efficiency (NUE) of turfgrasses are needed, since nitrate contamination of ground water is a concern on golf courses. In the first study, the conditions of N utilization of fourteen bentgrass cultivars were compared in hydroponic solution culture. There were significant differences between cultivars in plant tissue dry weight, tissue N content, root absorption efficiency (RAE), and NUE. From a whole plant basis, 'Penncross' accumulated the highest N accompanied with the highest whole plant dry weight (WPDW). 'Regent' had the highest NUE while 'Allure' had the lowest NUE. Nitrogen absorption efficiency values were comparatively higher in 'Allure' than all the other cultivars. Differences in NUE among most cultivars were correlated to plant dry weight.","The second study was conducted to determine the conditions of N utilization, including plant dry weight production, N and nitrate N $\\rm (NO\\sb3$-N) content accumulation, nitrogen utilization efficiency, RAE, reduced N accumulation, and nitrate reductase activity (NRA), and some of their relationships in creeping bentgrass cultivars.","The results demonstrated the genotypic variation in N utilization and absorption. 'Putter' and 'Penncross' were the most efficient genotypes in utilizing N at low N conditions. The N assimilation capacity was not the primary factor involved in genotypic differences in NUE. However, nitrate reductase activity was probably the mechanism for the regulation of NUE. The NRA was influenced by environmental conditions. The behaviors of N utilization are very affected by the N supplied level.","The role of nutrition in the control of organ growth has been studied through the application of in vitro techniques. Roots can be considered the principal organ of uptake. The relationship between NUE and plant growth for two different creeping bentgrass cultivars was investigated through the use of tissue culture methods in the third study. 'Putter', a high NUE cultivar, had longer roots and shoots than the low NUE cultivar, 'National', on each level of N. The results suggest that root formation was probably one of the mechanisms for regulating the nitrate utilization in creeping bentgrass.","Made available in DSpace on 2011-05-07T13:25:34Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9543636.pdf: 3570407 bytes, checksum: d040efcfd76d490016b39dc3e2747cf8 (MD5) Previous issue date: 1995","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:54:36Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:25:23-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Nitrogen utilization in creeping bentgrass"]}]}],"canonical_facts":{"dc:contributor":["Fermanian, Thomas W."],"dc:creator":["Kuo, Yu-Jen"],"dc:date":["2011-05-07T13:25:34Z","10000-01-01","1995"],"dc:description":["Efficient approaches for screening nitrogen utilization efficiency (NUE) of turfgrasses are needed, since nitrate contamination of ground water is a concern on golf courses. In the first study, the conditions of N utilization of fourteen bentgrass cultivars were compared in hydroponic solution culture. There were significant differences between cultivars in plant tissue dry weight, tissue N content, root absorption efficiency (RAE), and NUE. From a whole plant basis, 'Penncross' accumulated the highest N accompanied with the highest whole plant dry weight (WPDW). 'Regent' had the highest NUE while 'Allure' had the lowest NUE. Nitrogen absorption efficiency values were comparatively higher in 'Allure' than all the other cultivars. Differences in NUE among most cultivars were correlated to plant dry weight.","The second study was conducted to determine the conditions of N utilization, including plant dry weight production, N and nitrate N $\\rm (NO\\sb3$-N) content accumulation, nitrogen utilization efficiency, RAE, reduced N accumulation, and nitrate reductase activity (NRA), and some of their relationships in creeping bentgrass cultivars.","The results demonstrated the genotypic variation in N utilization and absorption. 'Putter' and 'Penncross' were the most efficient genotypes in utilizing N at low N conditions. The N assimilation capacity was not the primary factor involved in genotypic differences in NUE. However, nitrate reductase activity was probably the mechanism for the regulation of NUE. The NRA was influenced by environmental conditions. The behaviors of N utilization are very affected by the N supplied level.","The role of nutrition in the control of organ growth has been studied through the application of in vitro techniques. Roots can be considered the principal organ of uptake. The relationship between NUE and plant growth for two different creeping bentgrass cultivars was investigated through the use of tissue culture methods in the third study. 'Putter', a high NUE cultivar, had longer roots and shoots than the low NUE cultivar, 'National', on each level of N. The results suggest that root formation was probably one of the mechanisms for regulating the nitrate utilization in creeping bentgrass.","Made available in DSpace on 2011-05-07T13:25:34Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9543636.pdf: 3570407 bytes, checksum: d040efcfd76d490016b39dc3e2747cf8 (MD5) Previous issue date: 1995","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:54:36Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:25:23-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9543636","(UMI)AAI9543636","http://hdl.handle.net/2142/21994"],"dc:language":["eng"],"dc:rights":["Copyright 1995 Kuo, Yu-Jen"],"dc:subject":["Agriculture, Agronomy","Biology, Plant Physiology"],"dc:title":["Nitrogen utilization in creeping bentgrass"],"dc:type":["text"],"thesis:degree_discipline":["Crop Sciences"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:19Z"}