Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/1/1995
Publication Date: N/A
Citation: Interpretive Summary: The main reasons for releasing Kaybonnet are its blast resistance, high yield potential, and excellent milling yields. It is expected that Kaybonnet should replace both Katy and Newbonnet, since it combines desirable attributes from each of it parents. Kaybonnet appears to be well adapted to the rice growing region of the southern USA.
Technical Abstract: 'Kaybonnet' rice (Oryza sativa L.) (Reg. no CV-98, PI 583278) is a blast-resistant, high-yielding long-grain rice developed cooperatively by the Arkansas Agricultural Experiment Station and the USDA-ARS. It was officially released in 1994 by the Agricultural Experiment Stations of the University of Arkansas, University of Florida, Louisiana State University, Mississippi State University, University of Missouri, and Texas A&M University and by the USDA-ARS. Kaybonnet is 2 to 3 days earlier in maturity than either Katy or Newbonnet. Kaybonnet's plant height (ca. 108 cm) is is similar to Newbonnet. Straw strength and lodging characteristics of Kaybonnet are more similar to Katy. Rough rice grain yields of Kaybonnet have been similar to those of Newbonnet. In 11 ARPT tests (1992-1993) Kaybonnet, Katy, Newbonnet, and Lacassine averaged yields (120 g kg moisture ) of 7988, 7538, 7848, and 7757 kg ha **-1, respectively. Milling yields (mg g**-1 whole kernel/mg g**-1 total milled rice) in the ARPT conducted during 1992-1993 for Kaybonnet, Katy, Newbonnet, and Lacassine averaged 660:720, 640:710, 640:720, and 600:730, respectively. Kaybonnet has a high field resistance to blast, is moderately susceptible to sheath blight and to the physiological disorder straighthead, and appears to have excellent resistance to damage form insects that cause pecky rice.