M-207
Description and Management Guidelines

 

 

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Agronomy Fact Sheet Series

Authors

C.W. Johnson, plant breeder, Rice Experiment Station, Biggs, CA

 

Introduction

M-206 is a very to early maturing, semi-dwarf, glabrous, Calrose quality Medium-grain. It was developed by CCRRF at the Rice Experiment Station (RES) and released to growers in 2005. It is resistant to the current race of blast found in California

Table 1. Summary of Agronomic Characteristics for
M-202 and M-207
2003 to 2004

 

M-202

M-207
  2003 2004 2003 2004
Grain Dimensions (Paddy)        
Average Length (mm) 8.5 8.3 8.7 8.6
Average Width (mm) 3.3 3.4 3.0 3.1
L/W Ratio 2.6 2.5 2.9 2.7
 
Grain Dimensions (Brown)        
Average Length (mm) 6.2 6.0 6.4 6.3
Average Width (mm) 2.9 2.9 2.7 2.7
L/W Ratio 2.2 2.1 2.47 2.3
1000 Grain Weight (g) 24.5 23.0 22.1 21.6
 
Grain Dimensions (Milled)        
Average Length (mm) 5.8 5.7 6.0 5.8
Average Width (mm) 2.8 2.9 2.5 2.6
L/W Ratio 2.1 2.0 2.4 2.2
Apparent Amylose (%) 16.9 15.8 16.0 15.5
         
Protein (%)        
Brown 5.7 - 6.9 -
Milled 4.9 4.9 5.9 6.2
 
Alkali Spreading Value (1.5% KOH) 6.0 6.0 6.0 6.0
Alkali Spreading Value (1.7% KOH) 7.0 7.0 7.0 7.0
Cooking Time (min.) 19.4 18.7 18.1 17.8
 
Rapid Visco Analyzer        
AACC Method        
Peak 279 315 297 301
Hot Paste 156 148 194 173
Cool Paste 255 240 298 272
Setback -24 -74 1 -29
Consistency 99 92 104 99
Breakdown 123 167 103 128
Pasting Temp. (C) 71.2 71.1 74.5 73.6

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