Table 4.
Somatic chromosome number (2n), ploidy level (x), 2C nuclear DNA content with standard deviation, monoploid genome size (Cx-value, determined as 2C DNA amount/ploidy level) expressed in DNA picograms and megabase pairs, for 21 Indian plants belonging to six genera of Zingiberaceae and previous reports; using flow cytometry (FC:PI) and Feulgen microdensitometry (FE)
| Sl. no. | Taxon | Present report | Previous reports | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2n | Ploidy level (x) | 2C DNA content (pg) ± SD | 1Cx-value (pg) | 1Cx-value (Mbp) | 2n | Ploidy level (x) | 2C DNA content (pg) | Method | Reference | ||
| 1 | Alpinia calcarata | 48 | 4 | 4·43 ± 0·015 | 1·108 | 1083·62 | – | – | – | – | – |
| 2 | Alpinia galanga | 48 | 4 | 3·86 ± 0·018 | 0·965 | 943·77 | – | – | – | – | |
| 3 | Alpinia malaccensis | 48 | 4 | 4·38 ± 0·012 | 1·095 | 1070·91 | – | – | – | – | – |
| 4 | Alpinia zerumbet | 52 | 4 | 3·95 ± 0·014 | 0·988 | 966·26 | – | – | – | – | – |
| 5 | Curcuma amada | 42 | 6 | 1·59 ± 0·042 | 0·265 | 259·17 | 42 | 6 | 1·86 | FC:PI | Leong-Skornickova et al. (2007) |
| 40 | – | 1·56 | FE | Das et al. (1999) | |||||||
| 6 | Curcuma aurantiaca | 42 | 6 | 2·84 ± 0·083 | 0·473 | 462·59 | 42 | 6 | 2·2 | FC:PI | Leong-Skornickova et al. (2007) |
| 7 | Curcuma caesia | 63 | 9 | 2·52 ± 0·013 | 0·280 | 273·84 | 63 | 9 | 2·82 | FC:PI | Leong-Skornickova et al. (2007) |
| 8 | Curcuma inodora | 42 | 6 | 2·03 ± 0·009 | 0·338 | 330·56 | 42 | 6 | 2·29 | FC:PI | Leong-Skornickova et al. (2007) |
| 9 | Curcuma longa | 63 | 9 | 2·40 ± 0·010 | 0·267 | 261·13 | 63 | 9 | 2·71 | FC:PI | Leong-Skornickova et al. (2007) |
| 10 | Curcuma rubescens | 63 | 9 | 2·71 ± 0·027 | 0·301 | 294·38 | 42 | 6 | 1·87 | FC:PI | Leong-Skornickova et al. (2007) |
| 11 | Globba marantina | 52 | 4 | 3·63 ± 0·139 | 0·908 | 888·02 | – | – | – | – | – |
| 12 | Globba sessiliflora | 52 | 4 | 3·05 ± 0·134 | 0·763 | 746·21 | – | – | – | – | – |
| 13 | Globba schomburgkii | 48 | 4 | 3·00 ± 0·053 | 0·750 | 733·50 | – | – | – | – | – |
| 14 | Hedychium spicatum | 68 | 4 | 2·71 ± 0·048 | 0·678 | 663·08 | – | – | – | – | – |
| 15 | Hedychium coronarium | 34 | 2 | 2·14 ± 0·011 | 1·070 | 1046·46 | – | – | – | – | – |
| 16 | Kaempferia angustifolia | 36 | 3 | 5·21 ± 0·040 | 1·370 | 1339·86 | – | – | – | – | – |
| 17 | Kaempferia elegans | 22 | 2 | 3·43 ± 0·004 | 1·715 | 1677·27 | – | – | – | – | – |
| 18 | Kaempferia galanga | 54 | 5 | 8·61 ± 0·055 | 1·722 | 1684·12 | – | – | – | – | – |
| 19 | Kaempferia rotunda | 44 | 4 | 7·45 ± 0·163 | 1·863 | 1822·01 | – | – | – | – | – |
| 20 | Zingiber officinale | 22 | 2 | 3·60 ± 0·045 | 1·800 | 1760·40 | 22 | – | 12·05 | FE | Rai et al. (1997) |
| 21 | Zingiber zerumbet | 22 | 2 | 3·89 ± 0·036 | 1·945 | 1902·21 | – | – | – | – | – |
–, no previous genome size report.