Table 2.
The number of stylet sheaths and feeding marks and percentage rate of successful sucking by each rice stink bugs in individual experiment
| Insect species | Year | Cultivar | Total number of spikelets | Number of stylet sheaths | Stylet sheaths/spikelet | Number of feeding marks | Percentage rate of successful sucking (%)a | Ratio (%)b |
|---|---|---|---|---|---|---|---|---|
| L. chinensis | 2013 | Milyang 44 | 114 ± 15 | 176 ± 22 | 1.58 ± 0.39 | 22 ± 12 | 12** | (26) |
| Aichinokaori SBL | 84 ± 19 | 92 ± 9 | 1.12 ± 0.26 | 45 ± 7 | 49 | |||
| 2015 | Milyang 44 | 110 ± 24 | 101 ± 48 | 0.89 ± 0.35 | 24 ± 12 | 24** | (46) | |
| Aichinokaori SBL | 118 ± 31 | 63 ± 19 | 0.56 ± 0.23 | 32 ± 5 | 51 | |||
| C. punctiger | 2013 | Milyang 44 | 95 ± 31 | 87 ± 53 | 0.98 ± 0.56 | 12 ± 4 | 15** | (23) |
| Aichinokaori SBL | 79 ± 15 | 40 ± 5 | 0.51 ± 0.08 | 27 ± 10 | 66 | |||
| 2015 | Milyang 44 | 93 ± 15 | 44 ± 18 | 0.49 ± 0.25 | 22 ± 9 | 50* | (68) | |
| Aichinokaori SBL | 118 ± 62 | 48 ± 14 | 0.50 ± 0.25 | 35 ± 4 | 74 |
a Number of feeding marks/number of stylet sheaths × 100. Data were arcsine-transformed before the analyses.
b Percentage rate compared with Aichinokaori SBL.
* and ** indicate significant difference by t-test with 5% and 1% confidence levels, respectively.
The number represents the means ± standard deviation of one panicle observed by the binocular dissection microscope within two panicles on each plant examined after individual feeding treatment.