Table 5 Within-plant genotypic variance in distribution of ¹³C-photosynthate to different organs during the period of early flowering to boll-opening stage, the peak flowering to boll-opening stage, and the peak boll-setting to boll-opening stage /%

Vegetative organs

Root

5.22 a

5.15 a

4.20 b

10.20 b

13.78 a

7.83 c

15.27 b

22.82 a

14.20 c

Stem

14.63 b

16.39 a

16.22 a

17.87 b

19.15 a

17.54 b

19.03 b

21.81 a

20.13 b

Fruit branch

6.77 c

7.92 b

14.24 a

10.58 a

8.83 b

9.12 b

10.11 a

8.99 c

9.55 b

Leaf

7.91 a

1.86 c

4.39 b

11.69 a

6.37 b

6.64 b

11.55 b

13.77 a

11.77 b

Redundant shoot

3.66 c

5.69 b

6.83 a

4.74 c

5.02 b

7.19 a

6.90 c

7.43 b

8.53 a

Total

38.19 b

37.02 b

45.88 a

48.81 a

44.68 b

43.55 b

53.09 b

59.18 a

54.87 b

Reproductive organs

Shell

10.10 b

9.77 b

11.79 a

8.17 b

10.00 a

10.07 a

8.00 a

8.07 a

7.53 a

Fiber

11.31 a

10.84 a

7.97 b

8.61 b

8.93 b

9.65 a

9.31 a

7.74 b

9.17 a

Seed

19.70 a

15.45 b

16.05 b

17.60 a

15.46 b

16.23 b

17.30 a

14.93 b

17.55 a

Total

41.11 a

36.03 b

35.81 b

34.38 a

34.39 a

35.95 a

34.61 a

30.74 b

34.25 a

Shedding organs

Leaf

16.10 b

20.72 a

14.16 c

12.65 b

16.81 a

17.39 a

10.84 a

9.36 b

10.69 a

Corolla

1.31 c

2.22 a

1.50 b

0.94 b

1.36 a

0.81 c

–

–

–

Fruit

3.28 b

4.01 a

2.64 c

3.22 a

2.77 b

2.30 c

1.46 a

0.72 b

0.19 c

Total

20.69 b

26.95 a

18.30 c

16.81 b

20.93 a

20.50 a

12.30 a

10.08 c

10.88 b