Abstract
Among the main problems that compromise the development of forest species are water and salt stresses, especially in the early stages of development, when seedlings are more sensitive. Thus, the objective of this study was to evaluate the morphophysiological and biochemical changes in Enterolobium contortisiliquum seedlings subjected to abiotic stresses. The experimental design was randomized complete blocks (RCB), composed of five treatments, with four replicates, and the experimental plot consisted of twenty plants. From the 31st day after sowing, when the seedlings reached approximately 15 cm in height, they began to receive the treatments, which consisted of different levels of electrical conductivity of irrigation water (0.3; 2; 4; 6; 8 dS m-1) for salt stress and periods of water restriction (0; 4; 8; 12 and 16 days without irrigation) for water stress. The traits evaluated were: plant height, root length, stem diameter, number of leaves, leaf area, total dry matter, Dickson quality index, height/shoot dry matter ratio, total soluble sugars, starch, total amino acids and proline. An increase in the electrical conductivity of irrigation water and days without irrigation compromised the development of E. contortisiliquum seedlings, which was intensified from 2 dS m-1 and four days without irrigation for salt and water stresses, respectively. The mechanism of survival of E. contortisiliquum to abiotic stresses involves reduction in the growth and quality of seedlings, with activation of biochemical defense mechanisms of the species.
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Claims 3
Claim · model-written summary
Increasing electrical conductivity of irrigation water (salt stress) compromised development of E. contortisiliquum seedlings, intensified from 2 dS m-1.
- Taxon
- Enterolobium contortisiliquum
Enterolobium contortisiliquumt0 - Treatment
- electrical conductivity of irrigation watere1
- Outcome
- development of E. contortisiliquum seedlingse1
- Direction
- compromisede1
- Value
- 2 dS m-1e1
- Qualifier
- intensified from 2 dS m-1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enterolobium contortisiliquum seedlings under abiotic stresses”
e1“An increase in the electrical conductivity of irrigation water and days without irrigation compromised the development of E. contortisiliquum seedlings, which was intensified from 2 dS m-1 and four days without irrigation for salt and water stresses, respectively”
Claim · model-written summary
Increasing days without irrigation (water stress) compromised development of E. contortisiliquum seedlings, intensified from four days.
- Taxon
- Enterolobium contortisiliquumEnterolobium contortisiliquumt0
- Treatment
- days without irrigatione1
- Outcome
- development of E. contortisiliquum seedlingse1
- Direction
- compromisede1
- Value
- four dayse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enterolobium contortisiliquum seedlings under abiotic stresses”
e1“An increase in the electrical conductivity of irrigation water and days without irrigation compromised the development of E. contortisiliquum seedlings, which was intensified from 2 dS m-1 and four days without irrigation for salt and water stresses, respectively”
Claim · model-written summary
Survival of E. contortisiliquum under abiotic stresses involves reduced seedling growth and quality together with activation of biochemical defense mechanisms.
- Taxon
- Enterolobium contortisiliquumEnterolobium contortisiliquumt0
- Outcome
- survival of E. contortisiliquum to abiotic stressese2
- Qualifier
- activation of biochemical defense mechanismse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Enterolobium contortisiliquum seedlings under abiotic stresses”
e2“The mechanism of survival of E. contortisiliquum to abiotic stresses involves reduction in the growth and quality of seedlings, with activation of biochemical defense mechanisms of the species”