2026-09-21T13:44:57Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/71785 2023-07-11 col_2142_5131 col_2142_47040 com_2142_5130 com_2142_47039 com_2142_397

Lebowitz, Robert Joel 2014-12-16T20:45:15Z 2014-12-16T20:45:15Z 10000-01-01 1987 1987 This study examines the heritability of seedling-stage drought resistance in rape (Brassica campestris L.) and its association with seedling root morphology. The heritabilities of seedling stage drought resistance, based on percentage survival data from 40 half-sib families grown under high and low water stress conditions were 43% and 63%, respectively. Comparisons of digital image analysis measurements of root length and measurements of root dry mass suggest that rooting depth and extent affect seedling stage drought resistance. The second portion of this study examined the potential use of several silique-related morphological traits as indirect indices for seed number/silique and seed mass/silique, both components of seed yield in rape. Results indicate that silique length could be used as an indirect index of these two components of seed yield. Made available in DSpace on 2014-12-16T20:45:15Z (GMT). No. of bitstreams: 1 8725060.pdf: 2012229 bytes, checksum: e953efe3ca1c723d3ce2cfbc4634d1f6 (MD5) Previous issue date: 1987 Embargo set by: Seth Robbins for item 71951 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 63 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987. http://hdl.handle.net/2142/71785 (UMI)AAI8725060 Agriculture, Agronomy The Heritability of Seedling Stage Drought Resistance in Rape and Its Relationship to Seedling Root Morphology text Horticulture Horticulture University of Illinois at Urbana-Champaign Dissertation Ph.D.