Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract only
Publication Acceptance Date: 10/31/1999
Publication Date: N/A
Citation: Interpretive Summary:
Technical Abstract: Farmers in the southern U.S. are planting more rice after harvesting wheat. Time limitation in this cropping system requires fast maturing rice cultivars with reasonable high yield potential. Forty-eight accessions of rice germplasm from Japan, Korea and the U.S. were planted in a randomly complete block design during the second week of June in 1997 and 1998 for field evaluation. Hayashio and Tomoyutaka, two Japanese varieties, headed 50 days after emergence and yielded 4000 kg/ha. Geumobyeo and Sobaegbyeo, two Korean varieties, headed 60 days after emergence and yielded over 5000 kg/ha. Japan 92.09.31 from Japan headed in 70 days and yielded over 6000 kg/ha. These accessions demonstrated a balance between productivity and early maturity, and they may be a good source of germplasm in breeding programs directed toward this type of cropping system.