Table 1.
Relative abundance (±standard deviation (SD)) of seminiferous tubules at different stages of the seminiferous epithelium cycle and the ratios of different cell types in the testes of Phodopus sungorus, P. campbelli and their F1 hybrids.
| Genotype (n of Animals) | Stage of Seminiferous Epithelium Cycle | Empty Tubules | n of Tubules | Ratio of Cell Types | n of Tubules/Cells | ||||
|---|---|---|---|---|---|---|---|---|---|
| I–V | VI–XI | XII–XIV | SPG/SER 1 | P/SPG | SPTD/P | ||||
| P. sungorus (n = 4) | 0.18 ± 0.01 | 0.74 ± 0.01 | 0.07 ± 0.01 | 0.01 ± 0.01 | 1769 | 2.7 ± 1.5 | 1.3 ± 0.5 | 3.6 ± 0.5 | 84/10,094 |
| P. campbelli (n = 5) | 0.26 ± 0.05 | 0.67 ± 0.06 | 0.07 ± 0.03 | 0.00 ± 0.01 | 1871 | 2.8 ± 1.4 | 1.2 ± 0.4 | 3.8 ± 0.5 | 99/11,835 |
| F1 (n = 6) | 0.19 ± 0.01 * | 0.29 ± 0.01 * | 0.35 ± 0.01 * | 0.17 ± 0.01 * | 3877 | 1.7 ± 1.4 * | 2.8 ± 1.7 * | 0.2 ± 0.1 * | 152/17,265 |
1 SPG, spermatogonia; SER, Sertoli cells; SPTD, spermatids; P, spermatocytes at pachytene. * difference between F1 and mid-parental value is significant (Student’s t test, p < 0.001).