Rice Variety Profile for M-206

Very early to early maturing, semidwarf, glabrous, Calrose quality medium grain.

RES Rice Varieties

Variety: M-206

  • Former ID:
  • Year: 2004
Introduction

M-206 is a very early to early maturing, semidwarf, glabrous, Calrose quality medium grain. It was developed by CCRRF at the Rice Experiment Station (RES) and released to growers in March 2003. Its pedigree consists of varieties developed at RES.

Agronomic Characteristics

M-206, for evaluation purposes, was compared to very early maturing M-104 and the early maturing Calrose standard bearer, M-202 (Table 1). In statewide yield tests, M-206 flowered three days later than M- 104, had improved lodging resistance, improved resistance to blanking caused by cool temperatures 10 to 14 days before heading during microsporogenesis, averaged 3% higher yield, and has improved potential for whole kernel milled rice (3%). M-206 is susceptible to blast race IG-1 found in California. 

Kernels of M-206 are slightly larger in size and weight compared to M-104 and M-202. Laboratory analysis for physicochemical characteristics by the USDA-ARS Rice Research Unit, Beaumont, Texas indicated it fits Calrose medium-grain standards. Milled rice samples of M-206, M-104, and M-202 were distributed to various California rice marketing organizations and individual rice quality evaluators. Responses from evaluation indicated M-206 is similar to M- 104 and M-202 for various raw white rice, cooking and taste characters. M-206 can be commingled with other Calrose medium-grains. 

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Performance in Colder Areas

M-206 was compared to medium-grains M- 103 and M-104 at the coldest production location in San Joaquin County (Table 2). Early May planting dates resulted in M-206 heading 4 and 9 days later than M-104 and M-103 respectively, suggesting it may be a full season variety for this location. M-206 yielded 3% less than M-104 and 3% more than M-103. Milling samples taken at 3 different harvest dates from each replication of a strip trial of M-206, M-104, and M-103 in 2002 at San Joaquin County indicated that M-206 maintains its potential for improved whole-kernel milled rice over M-104. 

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Area of Adaptation

M-206 was released as a Calrose medium-grain. The data indicates it has broad adaptation in the entire rice growing region. In warm and cool production areas it will be another alternative to M-202 and M-205. In cold areas it can be an alternative to M-202 or M-104. In the coldest areas (Escalon and the Delta) it becomes a full season variety but has good blanking resistance and improved head rice over M-104. Field observation indicates it is more stable in less than optimal environments and has less non-synchronous heading. M-206 can be best described as a very early to early Calrose medium grain with improved resistance to blanking and to lodging, and improved potential for whole grain head rice. 

  • 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.