Abstract
Selecting (inter-varietal) Brassica juncea for tolerance to metal-contamination has been proposed as a strategy to develop superior genotypes for phytoextraction of lead (Pb) through selection and breeding techniques. To understand the differences among accessions of a single species to Pb accumulation, a pot experiment was conducted with three B. juncea accessions under levels of Pb added to the soil (0, 90, 180, and 540 mg kg−1). The duration of the growth period was 100 d. Pb concentration levels did not affect the flowering of B. juncea accessions. Plant height, shoot dry matter, and root dry matter were reduced linearly when soil Pb concentration increased to 540 mg kg−1. A significant interaction between Pb concentration levels and accessions was observed for Pb concentration in shoots and roots, indicating genotypic variation in Pb absorption. The concentration of Pb in shoots in accession PI 180266 was 51% higher compared to accessions PI 649105 and PI 432379 when soil Pb concentration increased to 540 mg kg−1. It can be concluded that the B. juncea accessions differed significantly in Pb uptake, and the selection of tolerant cultivars might be helpful for Pb phytoremediation of contaminated soils.
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Claims 8
Claim · model-written summary
Lead levels did not affect flowering.
- Taxon
- B. juncea
Brassica junceae0 - Treatment
- Pb concentration levelse0
- Outcome
- floweringe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“Pb concentration levels did not affect the flowering of B. juncea accessions”
Claim · model-written summary
Plant height fell linearly as soil lead increased to 540 mg per kg.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- soil Pb concentration increased to 540 mg kg−1e0
- Outcome
- Plant heighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“Plant height, shoot dry matter, and root dry matter were reduced linearly when soil Pb concentration increased to 540 mg kg−1”
Claim · model-written summary
Shoot dry matter fell linearly as soil lead increased to 540 mg per kg.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- soil Pb concentration increased to 540 mg kg−1e0
- Outcome
- shoot dry mattere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“Plant height, shoot dry matter, and root dry matter were reduced linearly when soil Pb concentration increased to 540 mg kg−1”
Claim · model-written summary
Root dry matter fell linearly as soil lead increased to 540 mg per kg.
- Taxon
- Brassica junceaBrassica junceat0
- Treatment
- soil Pb concentration increased to 540 mg kg−1e0
- Outcome
- root dry mattere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“Plant height, shoot dry matter, and root dry matter were reduced linearly when soil Pb concentration increased to 540 mg kg−1”
Claim · model-written summary
Lead level interacted significantly with accession for shoot lead concentration.
- Taxon
- Brassica junceaBrassica junceat0
- Material
- accessionse0
- Treatment
- Pb concentration levelse0
- Outcome
- Pb concentration in shootse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“A significant interaction between Pb concentration levels and accessions was observed for Pb concentration in shoots and roots”
Claim · model-written summary
Lead level interacted significantly with accession for root lead concentration.
- Taxon
- Brassica junceaBrassica junceat0
- Material
- accessionse0
- Treatment
- Pb concentration levelse0
- Outcome
- Pb concentration in shoots and rootse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“A significant interaction between Pb concentration levels and accessions was observed for Pb concentration in shoots and roots”
Claim · model-written summary
PI 180266 shoots contained 51% more lead than PI 649105 and PI 432379 at the highest soil lead level.
- Taxon
- Brassica junceaBrassica junceat0
- Material
- PI 180266e0
- Outcome
- concentration of Pb in shootse0
- Direction
- highere0
- Value
- 51%e0
- Qualifier
- soil Pb concentration increased to 540 mg kg−1e0
- Comparator
- PI 649105 and PI 432379e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“The concentration of Pb in shoots in accession PI 180266 was 51% higher compared to accessions PI 649105 and PI 432379 when soil Pb concentration increased to 540 mg kg−1”
Claim · model-written summary
The authors suggest selecting tolerant cultivars for phytoremediation of contaminated soil.
- Taxon
- Brassica junceaBrassica junceat0
- Outcome
- selection of tolerant cultivarse0
- Qualifier
- Pb phytoremediation of contaminated soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica juncea”
e0“selection of tolerant cultivars might be helpful for Pb phytoremediation of contaminated soils”
The same questions in other papers
lead atom · growth · Brassica juncea (Indian mustard)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.