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United States Department of Agriculture

Agricultural Research Service

Title: Emergence and Stand Establishment of Smooth Root Germplasm in Diseased and Non-Diseased Nurseries

Authors
item McGrath, J Mitchell
item Duckert, Timothy

Submitted to: Annual Beet Sugar Development Foundation Research Report
Publication Type: Other
Publication Acceptance Date: September 5, 2002
Publication Date: N/A

Technical Abstract: Seedling emergence and stand establishment in sugarbeet continue to be a high priority for growers. Any useful test to be used for breeding and selection of emergence potential needs to reflect field performance. We conducted a test to compare emergence and stand establishment among smooth-root (SR) germplasm between normal agronomic and disease plots having a long history of failing to support beet growth. The mechanisms of disease progression and the progression of disease pressures through the emergence phase of stand establishment need more focus since stand counts drop consistently after some maximum emergence is attained. Two entries, SR96 and EL52, showed high stand persistence in the agronomic trials. Disease nursery entries did not persist as well as in the agronomic nursery, although two entries were within 10% of the agronomic counts (US H20 and EL0204). Long-term persistence was best with US H20. Genetic variability likely exists in current sugar beet germplasm to select for better stand persistence.

Last Modified: 12/22/2014
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