Table II.
Influence of tuber-specific SUT1 antisense inhibition on starch accumulation at different developmental stages in potato tubers
| Plant No. | Starch Content
|
|||
|---|---|---|---|---|
| First stage | Second stage | Third stage | Fourth stage | |
| mmol g−1 fresh wt | ||||
| Potato cv Désirée wild type | 71.5 ± 10 | 233 ± 26 | 440 ± 21 | 450 ± 29 |
| αSUT1-T1 | 39.2 ± 6.0* | 272 ± 25 | 840 ± 97* | 572 ± 71 |
| αSUT1-T12 | 30.6 ± 4.6* | 282 ± 25 | 394 ± 14 | 510 ± 49 |
| αSUT1-T16 | 46.4 ± 11 | 189 ± 34 | 690 ± 60* | 599 ± 22* |
| αSUT1-T20 | 41.9 ± 9.3 | 257 ± 87 | 570 ± 30* | 582 ± 35 |
| αSUT1-T31 | 45.4 ± 9.3 | 354 ± 59 | 551 ± 90 | 518 ± 52 |
The results are means of four independent samples ± se. First (<0.01 g) and second stage tubers (0.02–0.06 g) were harvested 3 weeks after transfer into the greenhouse, third stage tubers (1.5–2.5 g) 6 weeks after transfer, and fourth stage tubers (4–8 g) 9 weeks after transfer. *, Values that were determined by the Student's t test to be significantly different from the wild type (P < 0.05).