Submitted to: Arkansas Experiment Station Research Series
Publication Type: Experiment Station
Publication Acceptance Date: 8/1/2001
Publication Date: N/A
Citation: N/A Interpretive Summary: Interpretive summary not required.
Technical Abstract: A total of 213 germplasm accessions were introduced from China in 1996, of which 98 were selected for agronomic evaluation at Stuttgart in 2000 after quarantine processing and seed increase. The 98 accessions were arranged in four maturity groups based on heading dates collected in 1999. In group 1, grain yields of four accessions were 47% or more than Maybelle (107 bu/A). Fu No83, the highest-yielding (186 bu/A), was long grain but had low amylose (15.3%). Six accessions had head rice yields ranging from 52 to 56%, which were higher than Maybelle (48%). In group 2, GP-2 (232 bu/a) and another nine accessions significantly outyielded Priscilla (154 bu/A), the best check in this group. Six accessions had head rice yields (60 to 66%), comparable to Priscilla (59%). Amylose ranged from 14.0 to 26.5%. In group 3, line 4597 (227 bu/A) and another six accessions had yields significantly greater than Bengal (174 bu/A). Amylose contents in five accessions (14.3 to 15.8%) were similar to Bengal (14.7%), but four of these were long grain types. Two medium grain accessions, 4580 and Shufeng 109, had high amylose, 27.3 and 27.0%, respectively. In group 4, line 4642 (208 bu/A) and another seven accessions yielded significantly more than the check variety Cypress (159 bu/A). Jinnuo No6 was a waxy, high yielding variety in both grain (186 bu/A) and milling yields (total 69% and head 64%). Among 494 other foreign germplasm accessions from 19 countries, 47 accessions had grain yields ranging from 197 to 244 bu/A, which were similar to or more than Bengal. The best accession, Milyang 48 (PI 503191) from Korea, yielded 244 bu/A, and 34 out of the 47 high yielders were from Korea.