Table 1 Descriptions of traits related to seed vigor and early vigor investigated in the study
Traits | Observations | Descriptions |
|---|---|---|
Seed vigor measured under controlled condition in an incubator | ||
Germination percentage | GP | The percentage of germinated seeds at 14 DAI |
Germination energy | GE | The percentage of germinated seeds at 5 DAI |
Germination index | GI | ∑(Gt/Dt), where Gt is number of germinated seed on Day t. |
Root number | RN | Number of root plant− 1 at 14 DAI |
Root length | RL | Max. length of root at 14 DAI |
Shoot length | SL | Max. length of shoot at 14 DAI |
Early vigor estimated under hydroponic culture condition in the green house | ||
Root number | RN21 | Number of root plant− 1 at 21 DAI |
Root length | RL21 | Max. length of root at 21 DAI |
Plant height | PH21 | Plant height at 21 DAI |
Total dry weight | TDW21 | Total (shoot + root) dry weight plant− 1 at 21 DAI |
Early vigor estimated under direct seeding condition in the field | ||
Plant height | PH28 | Plant height at 28 DAS |
Tiller number | TN28 | Number of tiller hill− 1 at 28 DAS |
Aboveground dry weight | ADW28 | Aboveground dry weight hill− 1 at 28 DAS |