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Table 5 Ward’s cluster analysis using select aroma/flavor attributes to categorize varieties

From: Important Sensory Properties Differentiating Premium Rice Varieties

Variety Country Type Cluster A–B (r2 = 0.58) Cluster A1–A2 (r2 = 0.21) Common characteristicsa
IRGA-417 (2008) Brazil Premium A A1  
BRS Jaçanã (2008) Brazil 2nd best A A1  
Khazar Iran 2nd best A A1  
IR64 Philippines Premium A A1  
Pelde Australia Premium A A1  
Langi Australia 2nd best A A1  
Koshihikari Japan Premium A A1  
Sambha Mahsuri India Premium A A1  
Guodao 6 China 2nd best A A1  
Koshiibuki Japan 2nd best A A1  
Hashemi Iran Premium A A1  
Swarna India 2nd best A A2 High sewer animal
IRRI-132 Philippines 2nd best A A2  
IRGA-417 (2009) Brazil Premium B   High popcorn
PTT1 Thailand 2nd best B   High corn
BRS Primavera Brazil 2nd best B   High hay-like musty
Zhongzheyou 1 China Premium B   High grain/starchy
KDML105 Thailand Premium B   High sweet aromatic
  1. The varieties are listed in the tables in the order they appear in the cluster analysis tree chart
  2. aCluster B means were significantly higher (P < 0.01) than cluster A means for popcorn (1.2 versus 0.7), corn (0.9 versus 0.6), hay-like musty (1.3 versus 0.9), grain/starchy (2.3 versus 1.9), and sweet aromatic (0.7 versus 0.4)