Figure 1
![Effect of iodine application in vegetative biomass, in three samplings [(1) 41 dat, (2) 71 dat, (3) 125 dat]; the units are expressed in grams. Means with same letters do not show statistically significant differences, p ≤ 0.05, vertical bars represent standard deviations. KIO3, potassium iodate.](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6471d0ff215d2f6c89db1c50/j_fhort-2022-0003_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKPQJMQYXX%2F20260307%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260307T195959Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDsaDGV1LWNlbnRyYWwtMSJHMEUCID9evL87gjUPWegGMzR6H%2BscDkM4gtbwtOoQLmmj0%2BQkAiEAq78uiSZLYwpw6mAyAykkTkzWXGH95uQs8AZ2vCT2eEoqvQUIBBACGgw5NjMxMzQyODk5NDAiDBgBFsC45YcjRyS2CSqaBU1WTfK19TZsYnDYG%2FVxbZ43kTKrjD1VXlR04xKf61717hN84cbWw4ExPUahNpW8%2BaHmMDzwfiZobIwkvlPFlcyqRdSWTNX8tex5uy8iGgJyONnvKtbkAcwJ318%2BrlfA9Moc3Yvhouxy%2BNmE%2FZU1oZ%2BTLM8vr6sXgN0i3m3sdxO4nTg2%2B6XH9KXaT10w5Y1bRk4lEHSvQSUFI5X%2BOCD%2FqYYejdcYXe4SqzBxz4nkeihMvffE26%2FjO58JxDMfls0fK6Ne0JjYsV30B5RC7Fv6%2F4y4rACBYj2q5Jb7iTTgPlwtzwwoORtI8lKpk3xsewzF%2BRQic%2BVRJd1Q4ik3HHsNilCxM459EqLim9FT%2BRuv092gL2dwr513NLiT0yOmBCaq7989uGsmA32fDKrjVHiFsPLkAbKIEJZzj9QZBb9zyXbtto2r9H2ntoJZTUF6fbjikkED%2FTqW6u0XODvQnUyHulqDslPGUQDw74fM0K%2Bo4Dx4Xt0IK%2BlYr%2BlVitWUK0F2gMLY1p1vXqMWAIwq1wcy2MS3oPyYLnDCBH81BN48hMpGMXZ1D1u9f0D4Ixb1DBOSsuMZy%2B9plSNsPGM8oV8gXiQQi4M9iJAsoemQ8h4lwVPjZKoBF%2BC33D6w%2B9teDI9WvnOU6N9wpo2zg67wcw8Ltb9NKfACCrck5NIMcteajJxtJAsAFgLFXaahFtMTs2lUAMHiUstcW%2BCTOcp%2BI2XfbpYlE18RUzv6xEdX008b5zs8900agfm0eoMPHEb0Wx75yZGLZ4%2FAvi5t7GLrYNVJtV5CtwRrVLA8WBV0kW8s3O8l%2F01lNCOhfV9zRULtvVnJDvvRVtR13%2Fr606jpaBmAkQ9cEl%2FnOJUKEcWPF0KAyV7ABBSKKWMghGsq%2BDDA5bHNBjqxAQt0PBTXoT1HRyeRGMpmMlPVPN6u1o2IHHWQqMpKR6W75%2Fa6i%2BMdgtGCUcyLNyj0qeCWTiMlQxYTEkKRcjPxyQRdc3kVlRW1IvCNZh64e9w4GqodLFg7MPnTDTfO%2FvMLOqR%2Bac8%2FFXoeT3SHSPmAx0T7IWFbui%2F55a4orSRx6LTn5yEMl6EnsZTo8TF66sbMrN9sVaz9dSchoJbLA%2B06p%2FMQ8OTnlbKi27FX7GeaQqgP1g%3D%3D&X-Amz-Signature=322899d3ad6c03a578dc63ecc9ce9c97a5b56f2105510a8b5f5e783b342ff34f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 2
Figure 3
Effect of iodine on microelement content in tomato fruits_
| Treatments | Fe | Zn | Cu | Mn |
|---|---|---|---|---|
| (mg · kg−1 D.W.) | ||||
| NaCl | 2.96 b | 27.69 a | 11.87 a | 12.81 a |
| KIO3 + NaCl | 1.83 b | 24.35 a | 10.12 a | 10.89 a |
| Control | 28.04 a | 23.64 b | 8.38 a | 13.29 a |
Effects of iodine on macroelement content in tomato leaves_
| Treatments | N | P | Ca | K | Mg | Na |
|---|---|---|---|---|---|---|
| (g · kg−1 D.W.) | ||||||
| NaCl | 19.10 b* | 3.56 a | 36.83 bc | 21.03 a | 16.03 a | 46.88 a |
| KIO3 + NaCl | 22.60 a | 4.05 a | 31.60 c | 23.63 a | 13.16 a | 35.27 a |
| Control | 17.23 b | 2.94 a | 44.52 a | 29.66 a | 19.91 a | 7.14 b |
Effect of iodine on microelement content in tomato leaves_
| Treatments | Fe | Zn | Cu | Mn |
|---|---|---|---|---|
| (mg · kg−1 D.W.) | ||||
| NaCl | 192.34 a* | 51.60 a | 13.43 a | 245.23 a |
| KIO3 + NaCl | 145.80 a | 43.90 a | 17.12 a | 241.68 a |
| Control | 100.86 b | 41.50 a | 5.63 b | 183.29 a |
Effects of iodine on fruit number, plant fresh weight, height, number of foliole and stem diameter of tomato plants_
| Treatment | Fruit number | Fresh weight (g) | Height (cm) | ||||
|---|---|---|---|---|---|---|---|
| Sampling | 1 | 2 | 3 | 1 | 2 | 3 | |
| NaCl | 21.6 c* | 231.96 b | 609.32 b | 784.80 b | 52.40 b | 61.70 b | 73.60 b |
| KIO3 + NaCl | 34.2 b | 245.96 b | 683.16 b | 760.22 b | 51.10 b | 61.80 b | 70.80 b |
| Control | 48.8 a | 394.42 a | 833.06 a | 1914.92 a | 59.80 a | 94.70 a | 96.00 a |
| Foliole number | Stem diameter (cm) | ||||||
| 1 | 2 | 3 | 1 | 2 | 3 | ||
| NaCl | 151.00 b | 294.60 b | 780.80 b | 9.80 b | 11.80 a | 15.00 b | |
| KIO3 + NaCl | 142.40 b | 307.40 b | 603.00 b | 10.80 b | 13.20 a | 15.20 b | |
| Control | 217.50 a | 462.20 a | 1476.00 a | 14.40 a | 12.80 a | 18.60 a | |
Effects of iodine on macroelement content in tomato fruit_
| Treatments | N | P | Ca | K | Mg | Na |
|---|---|---|---|---|---|---|
| (g · kg−1 D.W.) | ||||||
| NaCl | 24.02 a | 2.59 a | 1.00 bc | 58.31 a | 2.72 a | 6.12 a |
| KIO3 + NaCl | 18.27 b | 2.51 a | 0.53 c | 52.32 a | 2.01 a | 9.04 a |
| Control | 15.39 c | 2.12 a | 2.02 a | 58.29 a | 2.68 a | 2.32 b |
Representation of treatments and controls_
| Salt conditions | NaCl (salt control) 35 plants | NaCl + KIO3 35 plants |
|---|---|---|
| Normal conditions | Absolute control (only Steiner solution) | |
Effect of iodine on antioxidant content in tomato fruit
| Treatments | CA (mM trolox) | AsA* (g · kg−1) | Lic (mg · kg−1) | GSH (g · kg−1) | Prot (g · kg−1) | CAT (U · min−1) | GPX (U · min−1) | APX (U · min−1) | SOD (U · min−1) |
|---|---|---|---|---|---|---|---|---|---|
| NaCl | 51.8 a** | 37 b | 19 a | 0.68 a | 16.1 b | 0.12 a | 1.6 a | 0.01 a | 5.68 a |
| NaCl+KIO3 | 21.2 b | 59.5 a | 4.4 b | 0.87 a | 16.2 a | 0.11 a | 1.6 a | 0.01 a | 5.40 a |
| Control | 29.6 b | 70.8 a | 22.5 a | 0.99 a | 12.5 c | 0.14 a | 3.1 b | 0.01a | 6.52 a |