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ARS Home » Midwest Area » East Lansing, Michigan » Sugarbeet and Bean Research » Research » Publications at this Location » Publication #115513
Title: NOTICE OF RELEASE OF NEW SMALL-RED GERMPLASM LINES: ARS-R93344, ARS-R93346 AND ARS-R93349

Author
item Hosfield, George
item KELLY, J - MICHIGAN STATE UNIVERSITY
item UEBERSAX, M - MICHIGAN STATE UNIVERSITY

Submitted to: Germplasm Release
Publication Type: Germplasm Release
Publication Acceptance Date: 3/7/2001
Publication Date: N/A
Citation: N/A

Interpretive Summary: This is a Germplasm Release. No Interpretive Summary is Required.

Technical Abstract: Germplasm lines ARS-R93344, ARS-R93346, ARS-R93349 were developed cooperatively by the Agricultural Research Service of the U.S. Department of Agriculture and Michigan State University and released in 2000. The new germplasm lines have the Type IIa, upright and short-vine growth habit, and combine these characteristics with the seed size, shape, and pigmentation to meet criteria established for the small-red market class. The new line have improved yield and a longer maturity than previously released Type IIa small-red germplasm. In performance tests (1993 to 1998) at locations in Michigan, North Dakota, and Washington, the mean yield of the three new germplasm lines was 88% of that for Rufus but was 17% higher than Garnet, check cultivars used to make comparisons. Plants of ARS-R93344, ARS-R93346, ARS-R93349 average about 50 cm in height and, compared to Rufus and Garnet, are remarkably upright in appearance and have excellent lodging resistance, ,and "dry down" at harvest. The wt per 100 seeds of ARS-R93344, ARS-R93346, ARS-R93349 averaged 35.3 g and was similar to Rufus (35.9 g) but heavier than Garnet (29.9 g). ARS-R93344, ARS-R93346, ARS-R93349 carry the Ibc-12 gene combination form of resistance to BCMV. ARS-R93349 also carries the Ur-6 gene which confers resistance to several races of bean rust disease. All three lines provide the dry bean industry with new genetic sources of upright small-red germplasm with acceptable processing quality; thus, expanding the germplasm base and providing greater options for breeders, growers, and other industry stakeholders. Bean breeders are provided advantages in using the new germplasm lines to improve the small-red market class because of these lines; exceptional combining ability for seed traits and the Type IIa growth habit.