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Table 1 Dehulled grain weight, starch content, and apparent amylose in rice mutant lines

From: Relationships between starch synthase I and branching enzyme isozymes determined using double mutant rice lines

Line

Genotype

Background

Grain weighta(mg)

Starch contentb(mg)

Amylose contentc(mg/seed)

Nipponbare (Nip)

Wild type (WT)

Nip

20.7 ± 0.2 (100.0)d

14.7 ± 0.1 (100.0)d

3.13

Taichung 65 (T65)

WT

T65

20.6 ± 0.2 (100.0)e

13.3 ± 1.0 (100.0)e

2.94

e7

ss1

Nip

19.0 ± 0.2*,** (91.7)d

13.7 ± 3.5 (93.1)d

3.19

EM557

be1

T65

23.4 ± 0.1*,** (112.7)e

14.5 ± 0.7 (108.9)e

3.15

#4011

ss1/be1

Nip/T65

21.0 ± 0.2 (101.4)d

12.5 ± 1.5 (85.1)d

2.68

Kinmaze (Kin)

WT

Kin

20.5 ± 0.2 (100.0)f

13.6 ± 0.4 (100.0)f

2.92

i2-1

ss1 L

Nip

21.2 ± 0.2** (102.4)d

11.9 ± 1.5 (80.8)d

2.50

EM10

be2b

Kin

11.7 ± 0.2*,** (56.4)f

6.2 ± 0.5* (45.1)f

1.82

#4017

ss1 L /be2b

Nip/Kin

14.2 ± 0.2*** (68.5)d

8.7 ± 2.0*** (59.3)d

1.88

  1. aMean ± SE of 50 seeds.
  2. bMean ± SE of three seeds.
  3. cAmylose content per seed = Starch contentb × apparent amylose content (%) (Table 3).
  4. dPercentage of wild type (Nipponbare).
  5. ePercentage of wild type (Taichung 65).
  6. fPercentage of wild type (Kinmaze).
  7. *Significant difference between single mutant and wild-type lines (t-test, P < 0.05).
  8. **Significant difference between parental mutant and double mutant lines (t-test, P < 0.05).
  9. ***Significant difference between double mutant and wild-type lines (t-test, P < 0.05).