DEVELOPMENT OF EARLY MATURING GEM LINES WITH VALUE-ADDED TRAITS
North Central Regional Plant Introduction Station, Ames, Iowa
2009 Annual Report
1a.Objectives (from AD-416)
Develop early maturity (RM<95 days) germplasm with value added-traits (VAT) utilizing exotic sources originating from the GEM Project. VAT's include composition for protein, oil, and starch.
1b.Approach (from AD-416)
Top crosses will be evaluated for performance in early maturity environments of North Dakota. Lines will be selected based on a benchmark for yield and moisture of 101%, and 95-100% respectively. The selected lines will be studied for VAT's. Three stiff-stalk, and six non-stiff stalk populations will be advanced and further selected in the nursery for future development.
This project relates to the primary objectives of the parent project which includes the development and evaluation of very early maturity germplasm (90 days relative maturity) with key value-added traits. These traits include protein, oil, and starch composition, and fermentable ethanol. Early maturity germplasm is deficient in genetic diversity and the long term impact of this project will broaden the germplasm for the northern US Corn Belt region. In October-November 2008, yield trials were harvested with lines derived from AR16026:S17-66-1-B x ND200 crossed to industry testers. Results in 2008 were supportive of 2007 data and seven hybrids were 101% of the commercial check average performance. In the nursery, S2 lines were harvested from three stiff stalk populations, and six non-stiff stalk populations. Test crosses were planted for yield trials across locations in North Dakota this spring, and three new early breeding crosses were initiated in the nursery. Advanced Early-GEM lines were also planted in the nursery this spring. The methods for monitoring activities include reviewing progress reports submitted by the Cooperator in July, and in December for the Annual GEM Cooperator Meeting. E-mail correspondence is done on a regular basis during the growing season.