Registration of ‘CL271’ Rice

Abstract

‘CL271’ (Reg. No. CV-147, PI 672550), a Clearfield (BASF, Ludwigshafen, Germany) medium-grain rice (Oryza sativa L.) cultivar, was developed by the Louisiana State University Agricultural Center at the Rice Research Station near Crowley, LA, and approved for release by the director of the Louisiana Agricultural Experiment Station in 2011. CL271 was derived from the cross ‘Neptune’//’Bengal’//’CL161’ made in 2009 and advanced in 2011 as an F2:3 bulked selection. Testing in the Clearfield preliminary yield trial in 2011 indicated high yield potential and favorable agronomic characteristics. In 2012 and 2013, CL271 was evaluated in 11 statewide yield performance trials, along with check cultivars ‘CL261’, ‘Caffey’, and ‘Jupiter’. Grain yield of CL271 was 10.2 Mg ha−1 compared with 9.0, 8.4, and 9.2 Mg ha−1 for CL261, Caffey, and Jupiter, respectively. Plant height for CL271 was 97 cm compared with 99 cm for CL261, Caffey, and Jupiter. CL271 reached 50% heading in 90 d, whereas CL261 reached 50% heading in 87 d, and Caffey and Jupiter in 92 d. CL271 has a semi-erect flag leaf, and the leaves are dark green and display an intermediate leaf angle. The lemma and palea are straw-colored and glabrous, and the apiculus, light purple at heading, is colorless as the grain approaches harvest maturity. CL271 is resistant to blast disease (caused by Magnaporthe grisea), moderately susceptible to sheath blight (caused by Rhizoctonia solani), and susceptible to bacterial panicle blight (caused by Burkholderia spp.).