|MCGRATH, J MITCHELL|
|Yu, Yi - MICHIGAN ST UNIVERSITY|
|Kitchen, Richard - MICHIGAN ST UNIVERSITY|
Submitted to: Saginaw Valley Bean and Beet Farm Report
Publication Type: Experiment Station
Publication Acceptance Date: April 1, 1999
Publication Date: N/A
Technical Abstract: The objective of this test was to examine field emergence in a range of sugar beet and related materials for subsequent correlation with laboratory germination in aqueous solutions. The materials examined included four current commercial seedlots, four smooth-root germplasm releases (prefix SR), two obsolete USDA hybrids, one accession each of red beet, fodder beet tand Swiss chard, 10 monogerm experimental hybrids and one line from USDA Salinas, CA. Emergence counts were taken five times during the emergence phase. Significant differences in emergence were observed, both within and between monogerm and multigerm accessions, however a great deal of variability was also evident despite eight replications of the trial. An ancillary goal of this test was to determine agronomic performance of fodder beet, red beet and Swiss chard in a sugar beet growing regime. Sucrose content of Swiss chard is comparatively high among non-sugar beet materials. Overall, there was no apparent relationship between emergence and agronomic performance, although for commercial materials better emergers tended to yield higher. Rankings of emergence among accessions was similar to that observed in the 1997 field trail (for those accessions in common, e.g. US H23 < ACH 185 and B5931 < Novartis E17 < US H20). A series of crosses were made by J.C. Theurer (retired) in 1993 as a test for combining ability. These materials were included to compare emergence of different hybrids (e.g. 657xHS, H23xHS, 607xHS, 576xHS and BMCxHS) created with the same pollinator (e.g. HS = 92HS25) grown in the same environment. Significant differences between the hybrids for emergence was not evident, although significant differences for agronomic performance were observed.