Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: 4/16/1997
Publication Date: N/A
Technical Abstract: A breeding program was initiated in 1990 to develop a pinkeye-type southernpea cultivar homozygous for the gc gene conditioning green cotyledons. The pinkeye is the leading cultivar class of southernpea grown in the U.S., and there is considerable interest in converting pinkeye germplasm to green cotyledon phenotypes because a cultivar homozygous for the gc gene can be harvested at the near-dry seed stage of maturity withou loss of the seeds fresh green color. Seeds containing embryos homozygous for the gt gene are easily identified, and this ability to select in the seed stage greatly facilitated breeding efforts. A total of 25 advanced breeding lines (F9 and F10) were evaluated in preliminary field tests in 1995, and the experimental line US-858 was selected for seed multiplication, field testing, and raw product evaluation in 1996. The results of 1996 replicated yield trials and seed multiplication plantings indicate that the maturity, seed, and yield characteristics of US-858 are comparable to those of the leading pinkeye-type cultivars. Raw product evaluations were conducted at a commercial freezing facility, and the results indicate that US-858 produces an excellent processed product. US-858 is resistant to blackeye cowpea mosaic virus, the major pathogen of southernpea in the U.S.