{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/21881"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/21881","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Cell cycle parameters and sweet corn emergence and seedling vigor","abstract":"Sweet corn genotypes containing the shrunken2 (sh2) endosperm mutation are associated with reduced emergence and poor seedling vigor. Shrunken2 genotypes with known differences for field emergence and vigor were used to investigate the contribution of seedling cell division to emergence and seedling growth. Variation among genotypes was observed for all of the cell division cycle phases which include G1, S, and G2. The S phase, when cells are undergoing DNA replication, showed the closest association to seedling growth. Inbred lines homozygous for starchy (Su1) endosperm displayed a significantly higher proportion of nuclei in the S phase than the same inbred homozygous for the sh2 endosperm mutation. Among all the genotypes tested, the proportion of nuclei in the S phase was positively correlated with field emergence and seedling vigor.","abstract_html":"Sweet corn genotypes containing the shrunken2 (sh2) endosperm mutation are associated with reduced emergence and poor seedling vigor. Shrunken2 genotypes with known differences for field emergence and vigor were used to investigate the contribution of seedling cell division to emergence and seedling growth. Variation among genotypes was observed for all of the cell division cycle phases which include G1, S, and G2. The S phase, when cells are undergoing DNA replication, showed the closest association to seedling growth. Inbred lines homozygous for starchy (Su1) endosperm displayed a significantly higher proportion of nuclei in the S phase than the same inbred homozygous for the sh2 endosperm mutation. Among all the genotypes tested, the proportion of nuclei in the S phase was positively correlated with field emergence and seedling vigor.","abstract_has_math":false,"creators":["Meyer, Annette Carol"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Crop Sciences","degree_department":null,"school":null,"contributors":["Juvik, John A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:22:02Z","date_published":"2011-05-07T13:22:02Z","updated_at":"2026-07-22T22:25:18Z","subjects":["Agriculture, Agronomy","Biology, Cell"],"languages":["eng"],"rights":["Copyright 1995 Meyer, Annette Carol"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9522151","(UMI)AAI9522151"],"render_values":[{"text":"AAI9522151","href":null,"code":true},{"text":"(UMI)AAI9522151","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/21881","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Juvik, John A."]},{"key":"dc:creator","label":"Author","values":["Meyer, Annette Carol"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:22:02Z","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, Cell"]}]},{"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 Meyer, Annette Carol"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9522151","(UMI)AAI9522151","http://hdl.handle.net/2142/21881"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Sweet corn genotypes containing the shrunken2 (sh2) endosperm mutation are associated with reduced emergence and poor seedling vigor. Shrunken2 genotypes with known differences for field emergence and vigor were used to investigate the contribution of seedling cell division to emergence and seedling growth. Variation among genotypes was observed for all of the cell division cycle phases which include G1, S, and G2. The S phase, when cells are undergoing DNA replication, showed the closest association to seedling growth. Inbred lines homozygous for starchy (Su1) endosperm displayed a significantly higher proportion of nuclei in the S phase than the same inbred homozygous for the sh2 endosperm mutation. Among all the genotypes tested, the proportion of nuclei in the S phase was positively correlated with field emergence and seedling vigor.","Variation was observed among sh2 genotypes for the rate of cell division in seedling shoots, which was measured by a method using nitrogen-15 to label DNA. Rates of DNA replication during the S phase in six to nine day old sh2 sweet corn seedlings were highly and positively correlated with field emergence and seedling growth rates.","Made available in DSpace on 2011-05-07T13:22:02Z (GMT). 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Shrunken2 genotypes with known differences for field emergence and vigor were used to investigate the contribution of seedling cell division to emergence and seedling growth. Variation among genotypes was observed for all of the cell division cycle phases which include G1, S, and G2. The S phase, when cells are undergoing DNA replication, showed the closest association to seedling growth. Inbred lines homozygous for starchy (Su1) endosperm displayed a significantly higher proportion of nuclei in the S phase than the same inbred homozygous for the sh2 endosperm mutation. Among all the genotypes tested, the proportion of nuclei in the S phase was positively correlated with field emergence and seedling vigor.","Variation was observed among sh2 genotypes for the rate of cell division in seedling shoots, which was measured by a method using nitrogen-15 to label DNA. Rates of DNA replication during the S phase in six to nine day old sh2 sweet corn seedlings were highly and positively correlated with field emergence and seedling growth rates.","Made available in DSpace on 2011-05-07T13:22:02Z (GMT). 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