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Registration of ‘CL162’ Long‐Grain Rice
Author(s) -
Solomon Walter L.,
Kanter Dwight G.,
Walker Timothy W.,
Baird George E.,
Lanford Leland S.,
Shaifer Sanfrid,
Fitts Paxton W.
Publication year - 2012
Publication title -
journal of plant registrations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 21
eISSN - 1940-3496
pISSN - 1936-5209
DOI - 10.3198/jpr2011.04.0231crc
Subject(s) - panicle , cultivar , biology , rhizoctonia solani , agronomy , oryza sativa , population , grain yield , blight , horticulture , biochemistry , demography , sociology , gene
‘CL162’ (CV‐135, PI 661110), a Clearfield long‐grain rice ( Oryza sativa L.) cultivar was developed by Mississippi State University Delta Research and Extension Center in Stoneville, MS, and jointly approved for release by Mississippi State University and BASF in 2011. The population from which CL162 was derived began as a single cross of CFX‐18 (‘CL161’)/‘Priscilla’ (PVP 9800212) made in 2001. CFX‐18, later named CL161, contains the gene for resistance to imazethapyr and imazamox, which are used in the Clearfield rice production system. CL162 was tested at 14 locations in Mississippi in 2008–2010 and in the Uniform Regional Rice Nursery conducted in 2010 Louisiana, Texas, Missouri, and Mississippi, where it had an average grain yield of 9.9 t ha −1 compared with 10.0, 8.9, and 10.7 t ha −1 for the comparison cultivars ‘Cocodrie’, ‘CL131’, and ‘CL151’, respectively. Its consistency in grain yield across production sites and years can be attributed, in part, to its excellent straw strength, as shown by a lodging incidence of 3% over the same number of test locations and years, compared with 17% for CL151 and 4% for CL131. CL162 averaged 84 d to 50% heading and 120 d to maturity over all tests from 2008 to 2010 compared with Cocodrie, which averaged 85 d to 50% heading and 119 d to maturity. CL162 is rated as susceptible to sheath blight (caused by Rhizoctonia solani J.G. Kühn); moderately susceptible to bacterial panicle blight (caused by Burkholderia glumae ), rotten neck blast (caused by Pyricularia grisea Sacc.), and straighthead disorder; and moderately resistant to leaf blast (caused by Pyricularia grisea Sacc.).