Table 1
Layout of the experiment.
| Factors | Zn (0.0 ppm) | Zn (0.5 ppm) | Zn (1.5 ppm) | Zn (2.0 ppm) |
|---|---|---|---|---|
| SA (0.0 ppm) | T1 | T2 | T3 | T4 |
| SA (50 ppm) | T5 | T6 | T7 | T8 |
| SA (100 ppm) | T9 | T10 | T11 | T12 |
[i] SA, salicylic acid; Zn, zinc.
Table 2
Effect of foliar application of SA and Znon the vegetative and reproductive growth indices in Celosia argentea var. cristata plants.
| 0 | 0.5 | 1.5 | 2.5 | Mean | |||
|---|---|---|---|---|---|---|---|
| 120 DST | Stem diameter (mm) | 0 | 23 e | 35 b–d | 38 a–c | 31 b–d | 33 B |
| 50 | 30 c–e | 26 de | 28 de | 31 de | 29 C | ||
| 100 | 34 b–d | 35 b–d | 42 ab | 47 a | 40 A | ||
| Mean | 29 C | 32 BC | 36 AB | 37 A | |||
| Shoot length (cm) | 0 | 29 c | 40 ab | 43 ab | 39 ab | 37 B | |
| 50 | 35 bc | 35 bc | 36 bc | 37 bc | 36 AB | ||
| 100 | 38 bc | 41 ab | 45 a | 46 a | 43 A | ||
| Mean | 34 B | 39 A | 41 A | 42 A | |||
| Shoot fresh weight (g) | 0 | 458 d | 883 ab | 936 ab | 803 bc | 770 B | |
| 50 | 673 d | 536 d | 563 d | 646 cd | 576 C | ||
| 100 | 899 ab | 770 bc | 897 ab | 1023 a | 910 A | ||
| Mean | 638 C | 730 B | 815 AB | 824 A | |||
| Shoot dry weight (g) | 0 | 186 f | 433 cd | 475 bc | 430 cd | 381 B | |
| 50 | 293 ef | 296 e | 320 e | 333 de | 311 C | ||
| 100 | 430 cd | 453 c | 566 b | 687 a | 534 A | ||
| Mean | 304 C | 394 B | 453 A | 483 A | |||
| Root length (cm) | 0 | 19 c | 25 a–c | 26 a–c | 24 a–c | 23 B | |
| 50 | 21 bc | 21 bc | 22 a–c | 22 a–c | 21 B | ||
| 100 | 25 a–c | 26 a–c | 27 ab | 30 a | 27 A | ||
| Mean | 22 A | 24 A | 25 A | 25 A | |||
| Root fresh weight (g) | 0 | 57 c | 77 a–c | 82 a–c | 75 a–c | 72 AB | |
| 50 | 62 bc | 64 bc | 66 a–c | 70 a–c | 66 B | ||
| 100 | 70 a–c | 70 a–c | 85 ab | 93 a | 81 A | ||
| Mean | 62 B | 72 AB | 78 A | 79 A | |||
| Root dry weight (g) | 0 | 37 d | 54 b–d | 59 a–c | 56 a–c | 52 B | |
| 50 | 48 cd | 46 cd | 47 cd | 50 cd | 48 B | ||
| 100 | 59 a–c | 60 a–c | 69 ab | 74 a | 65 A | ||
| Mean | 48 B | 53 AB | 59 A | 58 A | |||
| 65 DST | Number of buds · plant−1 | 0 | 47 e | 61 b–e | 68 bc | 64 b–d | 60 B |
| 50 | 54 c–e | 52 de | 55 c–e | 57 c–e | 54 B | ||
| 100 | 65 b–d | 60 b–e | 73 ab | 80 a | 70 A | ||
| Mean | 55 B | 58 B | 65 A | 68 A | |||
| 105 DST | Flower weight (g) | 0 | 5.83 f | 8.33 c–e | 9.6 bc | 9.3 b–d | 8.25 B |
| 50 | 7.40 ef | 7.41 d–f | 7.46 d–f | 7.83 c–f | 7.52 C | ||
| 100 | 8.56 c–e | 8.51 c–e | 10.50 b | 12.96 a | 10.12 A | ||
| Mean | 7.25 C | 8.06 C | 9.18 B | 10.22 A |
[i] Values with same lower case (rows) and upper case (rows and column) show insignificant difference (p ≤ 0.05) as determined by Tukey's test.
[ii] DST, days after seedling transplanting; SA, salicylic acid; Zn, zinc.
Figure 1
(A–F) Effects of foliar application SA and Zn and the physiological attributes in Celosia argentea var. cristata at 60th day after seedling transplanting. Vertical bars show standard errors of means of three replicates letters indicate significant differences (p < 0.05) according to Turkey's test. SA, salicylic acid; Zn, zinc.
Figure 2
PCA due to effect of foliar application of SA and Zn on morpho-physiological attributes in Celosia argentea var. cristata. CAT, catalase; CC, carotenoids; PCA, principal components analysis; POX, peroxidase; PPO, polyphenol oxidase; SA, salicylic acid; TCC, total chlorophyll content; TPC, total protein content; Zn, zinc.
Figure 3
Heat map visualisation of variables and the treatments due to effect of foliar application of SA and Zn on Celosia argentea var. cristata. CAT, catalase; CC, carotenoids; FW, flower weight; NB, number of buds/plant; POX, peroxidase; PPO, polyphenol oxidase; RDW, root dry weight; RFW, root fresh weight; RL, root length; SA, salicylic acid; SD, stem diameter; SDW, shoot dry weight; SFW, shoot fresh weight; SL, shoot length; TCC, total chlorophyll content; TPC, total protein content; Zn, zinc.