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United States Department of Agriculture

Agricultural Research Service

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Research Project: SUB-PROJECT: EXPLOITING CANOPY POSITION EFFECTS ON COMPOSITION TO ENHANCE SEED QUALITY

Location: Global Change and Photosynthesis Research Unit

Project Number: 5012-21000-027-04
Project Type: Reimbursable

Start Date: Apr 01, 2012
End Date: Mar 31, 2014

Objective:
1) Increase oil content above 22% while maintaining protein content and yield; and 2) to explore new and beneficial genetic sources of oil traits that are environmentally stable.

Approach:
We will do detailed comparisons of pod temperatures (10 cultivars) during seed development using a thermocouple (slower and requires contact with pod) and IR thermogun (faster and does not require physical contact). If differences are confirmed again in 2011, we will consider possible physiological mechanisms (e.g., transpirational cooling) and physical factors (e.g., pubescence, color). We will also screen 180 selected accessions from the USDA Soybean Germplasm Collection for oil content at the top and bottom of the canopy. Accessions that have high overall oil content and a strong canopy position effect, will be identified in the summer of year 1 and during the winter, crosses will be made with genotypes that have a small canopy position effect (low delOIL). The progeny of these crosses will be examined in the summer of year 2 for bulk oil content and canopy position effects.

Last Modified: 12/18/2014
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