Rice Variety Profile for Calaroma-201 (CJ-201)

Early, high yielding, Jasmine-type long grain variety.

RES Rice Varieties

Variety: Calaroma-201 (CJ-201)

  • Former ID: 15Y84
  • Year: 2018
Pedigree and Breeding

Calaroma-201 or CJ-201 is a high-yielding, semi-dwarf, early maturing, glabrous, Jasmine-type long grain and was a product of a cross made in the summer of 2009 at the Rice Experiment Station in Biggs, CA, designated as R40709. Detailed information on 15Y84 pedigree is: R40709=07Y603/JES; where 07Y603=02Y710/99Y529; 02Y710=00KDMX3-3; 99Y529=90Y563/3/L202/QC//L2O2. The official pedigree designation for Calaroma-201 is “00KDMX3-3/4/90Y563/3/L202/QUIZHAW/ L2O2/5/JES”. L-202 is an early maturing California long grain variety released by RES in 1984 and is no longer in commercial production. 90Y563 is an advanced line from the Long Grains Project at RES. Quizhaw is a high yielding rice introduction that came from China. 00KDMX3-3 is photoperiod-insensitive mutant line derived from a Thai Jasmine variety Khao Dawk Mali (KDM). JES is a mutant of KDM released by the USDA-ARS and University of Arkansas.

Calaroma-201 is a high-yielding, semi-dwarf, early maturing, glabrous, Jasmine-type aromatic long grain rice developed as an excellent alternative to imported Thai Jasmine. It the first of its class to be released by RES to the California rice industry and evaluated to be of acceptable quality by a number of external quality evaluators in the food serving sector, Asian rice consumers, farmers and marketing organization.

Agronomic Characteristics

The overall grain yield of Calaroma-201 across 22 experiments in the SW test averaged 9,450 lbs./acre compared to 9,310 and 8,890 lbs./acre for L-206 and A-202, respectively, with overall 3-year yield advantage of 6.3% and 1.5% over A-202 and L-206, respectively). Calaroma-201 is comparable to L-206 and A-202 in terms of overall seedling vigor score and lodging scores. It reaches 50% heading about 5 days later than L-206 and 1 day later than A-202, slightly taller than L-206 but shorter than A-202 by about 8 cm. Calaroma-201  area of adaptation is similar to L-206, but as with other RES-bred long grains, it is not recommended in colder rice areas.

Milling and Quality

The milled rice grains of CJ-201 has a 1000-grain weight of 19.72 grams compared to 19.94 and 22.27 grams for L-206 and A-202, respectively. Though its grains are lighter, CJ-201 however has a longer and narrower grains compared to L-206 or A-202, putting the length to width ratio of milled rice to 3.58.

Milling characteristics is an important component of the overall quality of a rice variety. Three-year data showed that the head rice yield of CJ-201 when harvested at 19-21% moisture is 60/67 (head/total) compared to 61/70 and 61/68 for L-206 and A-202. Also, the percentage of total rice of CJ-201 appeared to be lower compared to the checks.

RVA and Quality Evaluation

The mean apparent amylose content of CJ-201 is 15.76% compared to 22.41 and 22.38% for L-206 and A-202, respectively. Having low amylose content and low gel type. CJ-201 cooks softer and stickier compared to a conventional long grain cooking characteristics like L-206 and L-207

Based on the results of the RVA, CJ-201, compared to L-206 and A-202, is characterized by having higher peak viscosity and breakdown values, lower final viscosity value, and a negative setback, indicating softer and stickier cooking characteristics. Internal and external cooking and tasting evaluation confirms the differences in cooking quality of CJ-201and the regular or aromatic long grains. Feedback on eating quality by Asian consumers of imported Jasmine rice is also favorable, indicating that CJ-201is acceptable to the market and can be an excellent alternative to Thai Jasmine.

CJ-201: Amylose, protein content and gel type of CJ-201, L-206 and A-202 measured by USDA and CA Wheat Commission

CJ-201: RVA profile of CJ-201, L-206, and A-202 measured at RES

Blanking and Disease Screening Test

In San Joaquin, CJ-201had an observed blanking percentage of 3.17% in 2017 compared to 2.42 and 2.17 for L-206 and A-202, respectively. The GH test conditions in 2017 are unusually harsh, registering unusually high blanking scores of test entries for all grain types in general. Nonetheless, given the general sensitivity of the long grains to cold temperatures compared to short and medium grains. CJ-201are recommended only in warmer areas or those where the long grain L-206 or A-202 performed well.

Calaroma-201 reaction to stem rot disease is in between L-206 and A-202, L-206 being more susceptible. It is however more susceptible to aggregate sheath spot. 15Y84 is susceptible to blast, as L-206 and A-202.

Variety Photos
  • Ashley Averitt

    Maintenance and Operator

    Ashley is a maintenance and operator of California Cooperative Rice Research Foundation.

  • Deven Benson

    Maintenance and Operator

    Deven is a maintenance and operator of California Cooperative Rice Research Foundation.

  • Randy Jones

    Field Supervisor

    Randy is the field supervisor of California Cooperative Rice Research Foundation.

  • Joe Martin

    Plant Breeder Assistant

    Joe is a plant breeder assistant for the California Cooperative Rice Research Foundation (CCRRF). His primary focus at CCRRF is to assist in the short grain breeding program. He received his BS in Plant Biology from the University of California Davis. He is currently enrolled in the Plant Breeding Academy at UC Davis to help further his knowledge in plant breeding.

  • Gabriel Janish

    Plant Breeder Assistant

    Gabriel is a plant breeder assistant for the California Cooperative Rice Research Foundation.

  • Davinder Singh

    Plant Breeder Assistant

    Davinder is a plant breeder assistant for the California Cooperative Rice Research Foundation (CCRRF). His primary focus at CCRRF is to assist in the long grain breeding program.

  • Ravinder Gakhal

    Senior Plant Breeder Assistant

    Ravinder is a senior plant breeder assistant for the California Cooperative Rice Research Foundation (CCRRF). His primary focus at CCRRF is to assist in the medium grain breeding program.

  • Baldish Deol

    Senior Plant Breeder Assistant

    Baldish is a senior plant breeder assistant for the California Cooperative Rice Research Foundation.

  • George Yeltatzie

    Genetics Lab Technician

    George is the genetics lab technician for the California Cooperative Rice Research Foundation.

  • Frank Maulana, Ph.D.

    Short Grain Breeder

    Dr. Frank Maulana is a rice breeder for the California Cooperative Rice Research Foundation (CCRRF). He is leading a short grain breeding program to develop improved short grain rice varieties for five market classes, including conventional or regular, low amylose, sweet or waxy, premium quality and arborio or bold grain. The objectives of the program include developing rice varieties with high and stable yield, high milling grain yield, seedling vigor, cold tolerance, lodging resistance, and disease resistance. He received a BS in Crop Science from Lilongwe University of Agriculture and Natural Resources (LUANAR) in Malawi. Then, he worked as a plant breeder at the Agricultural Research and Extension Trust (ARET) for five years. He then went on to obtain PhD and MS in Plant Breeding and Genetics from Kansas State University (KSU), Manhattan, KS. Before joining CCRRF, he was a postdoctoral researcher at Louisiana State University (LSU) AgCenter-Rice Breeding program. His research project at LSU focused on implementation of genomic selection in an applied rice breeding program.

  • Gretchen Zaunbrecher, Ph.D.

    Genetics Lab Director

    Dr. Zaunbrecher is the Genetics Lab Director for the California Cooperative Rice Research Foundation (CCRRF).  The Genetics Lab utilizes marker assisted analysis to provide valuable genetic information to assist the breeders in rice varietal improvement.  In addition, through traditional mutational breeding as well as gene editing, we hope to develop new varieties of rice with enhanced yield, herbicide, and disease resistance, and other agronomically valuable traits.

  • Nirmal Sharma, Ph.D.

    Long Grain Breeder

    Dr. Nirmal Sharma is a plant breeder for the California Cooperative Rice Research Foundation (CCRRF), leading the long grain breeding project and incorporating disease resistance, high milling yield, seedling vigor, cold tolerance, and herbicide resistance into future rice varieties. He received his BS in Agriculture and MS in Biotechnology from Bangladesh Agricultural University. Then, he worked as a breeder in the Plant Breeding Division of the Bangladesh Rice Research Institute (BRRI) for several years. Next, he moved to the United States to pursue his PhD in crop sciences at the University of Illinois at Urbana-Champaign (UIUC). Upon completing his degree, he was a postdoctoral fellow at the Noble Research Institute before joining CCRRF.

  • Teresa B. De Leon, Ph.D.

    Medium Grain Breeder

    Dr. Teresa B. De Leon is currently leading the improvement and variety development of CCRRF medium grain project. She previously led the short grain breeding project from 2018-2021. Prior to her employment at the station, she worked as Plant Geneticist to University of California Davis for identification, origin, and prevention of weedy red rice. She developed pre-breeding and introgression lines of Louisiana rice with improved salinity tolerance for Louisiana State University Agricultural Center. As Assistant Scientist and Research Scholar, she has also worked at the International Rice Research Institute (IRRI) and University of the Philippines at Los Banos on disease resistance of rice and other crops. With several years of experience in rice research and development, Dr. De Leon is integrating the use of conventional and molecular tools in breeding for medium grains with high yield potential, high grain quality, wide adaptation, cold tolerance, disease and herbicide resistance, and most importantly, a rice with excellent cooking and taste quality for consumers.

  • Emily Schaaf

    Executive Assistant

    Emily is the executive assistant of California Cooperative Rice Research Foundation.

  • Dustin Harrell, Ph.D.

    Director

    Dr. Dustin Harrell has been the Director of the California Cooperative Rice Research Foundation Rice Experiment Station since November of 2021. Prior to his current leadership position, he held positions as the Resident Coordinator of the LSU AgCenter’s Rice Research Station, the Extension Rice Specialist for the state of Louisiana, and the project leader for the Rice Fertility and Agronomy Project at the LSU Rice Experiment Station.