Abstract
Abstract The influence of supplemental Ca 2 in saline nutrient solutions on germination, growth, and ion uptake of four Brassica species, B. campestris L., B. carinata, A.Br., B. juncea (L.) Czern. and Coss., and B. napus L. was studied in sand culture. The addition of 11.25 mM CaC1 2 to nutrient solution containing 225 mM NaC1 improved percentage of germination of B. napus and B. juncea, but had no significant effect on the germination speed of the four species. There was no significant effect of additional amount of Ca 2 in the saline medium (150 mM NaC1) on the shoot biomass and seed yield of B. carinata and B. campestris. By contrast, shoot dry matter of B. napus and B. juncea increased significantly with the increased in Ca 2 concentration of the growth medium, but their seed yield remained unaffected. Decreased Ca 2 concentrations of the saline growth medium reduced percent oil content in B. carinata, B. juncea, and B. campestris. Increasing Na/Ca ratio of the external medium affected ion uptake differently in different species. In B. carinata, a relatively salt‐tolerant species, the concentrations of Na + and K + in the shoots remained unaffected, but the C1 concentration was reduced linearly with the increase in external Na/Ca ratios. Root K + and Ca 2+ of the species decreased with the decrease in Ca 2+ supply. In B. campestris increasing Na/Ca ratios of the saline medium had no effect on the concentrations of Na + , C1, and Ca 2+ in the shoots and Na + , C1, and K + in the roots. Only shoot K + and root Ca 2+ decreased consistently. In the highly salt‐sensitive species, B. napus, the shoot Na + was reduced by the addition of Ca 2+ in the salt treatment, whereas the C1 and Ca 2+ uptake was promoted by supplemental Ca 2+ . The root K + concentrations decreased with the increase in Na/Ca. In B. juncea, which was similar to B. napus in biomass production, high Ca 2+ concentration in the salt treatment reduced the shoot Na + and root C1 concentrations and promoted the K + uptake. Shoot Na/Ca and Na/K ratios were increased in B. napus and B. juncea at the highest Na/Ca ratio of the growth medium. Shoot K + selectivity, S K,Na (determined as molar ratio of K: Na in tissue to molar ratio of K:Na in external medium) of all species remained unaffected except for B. juncea in which it decreased significantly at the highest Na/Ca ratio. The root K + selectivity increased in B. carinata.
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Claims 17
Claim · model-written summary
Calcium addition improved germination percentage of B. napus and B. juncea.
- Taxon
- B. napus and B. juncea
Brassica juncea_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Treatment
- addition of 11.25 mM CaC1 2e0
- Outcome
- percentage of germinatione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“The addition of 11.25 mM CaC1 2 to nutrient solution containing 225 mM NaC1 improved percentage of germination of B. napus and B. juncea”
Claim · model-written summary
Calcium addition did not significantly affect germination speed across four species.
- Taxon
- four speciese0
- Treatment
- addition of 11.25 mM CaC1 2e1
- Outcome
- germination speede0
- Direction
- no significant effecte0
Not reportedComparator
Verbatim
e0“but had no significant effect on the germination speed of the four species.”
e1“The addition of 11.25 mM CaC1 2 to nutrient solution containing 225 mM NaC1 improved percentage of germination of B. napus and B. juncea”
Claim · model-written summary
Additional calcium did not significantly affect biomass or seed yield of B. carinata and B. campestris.
- Taxon
- B. carinata and B. campestris
Brassica carinata.jpg?width=60)
Brassica rapa subsp. oleiferae0 - Treatment
- additional amount of Ca 2e0
- Outcome
- shoot biomass and seed yielde0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“There was no significant effect of additional amount of Ca 2 in the saline medium (150 mM NaC1) on the shoot biomass and seed yield of B. carinata and B. campestris.”
Claim · model-written summary
Increasing calcium significantly raised shoot dry matter in B. napus and B. juncea.
- Taxon
- B. napus and B. junceaBrassica junceaBrassica napuse0
- Treatment
- increased in Ca 2 concentratione0
- Outcome
- shoot dry mattere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot dry matter of B. napus and B. juncea increased significantly with the increased in Ca 2 concentration of the growth medium”
Claim · model-written summary
Calcium change left seed yield of B. napus and B. juncea unaffected.
- Taxon
- B. napus and B. junceaBrassica junceaBrassica napuse1
- Treatment
- increased in Ca 2 concentratione2
- Outcome
- seed yielde0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but their seed yield remained unaffected.”
e1“The addition of 11.25 mM CaC1 2 to nutrient solution containing 225 mM NaC1 improved percentage of germination of B. napus and B. juncea”
e2“shoot dry matter of B. napus and B. juncea increased significantly with the increased in Ca 2 concentration of the growth medium”
Claim · model-written summary
Lower calcium reduced oil content in three Brassica species.
- Taxon
- B. carinata, B. juncea, and B. campestrisBrassica junceaBrassica carinataBrassica rapa subsp. oleiferae0
- Treatment
- Decreased Ca 2 concentrationse0
- Outcome
- percent oil contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreased Ca 2 concentrations of the saline growth medium reduced percent oil content in B. carinata, B. juncea, and B. campestris.”
Claim · model-written summary
Increasing Na/Ca ratio reduced shoot chloride linearly in B. carinata.
- Taxon
- B. carinataBrassica carinatae1
- Treatment
- increase in external Na/Ca ratiose0
- Outcome
- C1 concentratione0
- Direction
- reduced linearlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the C1 concentration was reduced linearly with the increase in external Na/Ca ratios.”
e1“There was no significant effect of additional amount of Ca 2 in the saline medium (150 mM NaC1) on the shoot biomass and seed yield of B. carinata and B. campestris.”
t0“four Brassica species”
Claim · model-written summary
Lower calcium supply reduced root potassium and calcium in B. carinata.
BrassicaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root K + and Ca 2+ of the species decreased with the decrease in Ca 2+ supply.”
t0“Brassica species”
Claim · model-written summary
Increasing Na/Ca decreased shoot potassium and root calcium in B. campestris.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only shoot K + and root Ca 2+ decreased consistently.”
e1“the C1 concentration was reduced linearly with the increase in external Na/Ca ratios.”
t0“Brassica species”
Claim · model-written summary
Calcium addition reduced shoot sodium in B. napus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the shoot Na + was reduced by the addition of Ca 2+ in the salt treatment”
t0“Brassica species”
Claim · model-written summary
Supplemental calcium promoted chloride and calcium uptake in B. napus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the C1 and Ca 2+ uptake was promoted by supplemental Ca 2+”
t0“Brassica species”
Claim · model-written summary
Increasing Na/Ca decreased root potassium in B. napus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root K + concentrations decreased with the increase in Na/Ca.”
t0“Brassica species”
Claim · model-written summary
High calcium reduced shoot sodium and root chloride in B. juncea.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high Ca 2+ concentration in the salt treatment reduced the shoot Na + and root C1 concentrations”
t0“Brassica species”
Claim · model-written summary
High calcium promoted potassium uptake in B. juncea.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“promoted the K + uptake.”
e1“high Ca 2+ concentration in the salt treatment reduced the shoot Na + and root C1 concentrations”
t0“Brassica species”
Claim · model-written summary
Highest external Na/Ca ratio increased shoot Na/Ca and Na/K ratios in B. napus and B. juncea.
- Taxon
- B. napus and B. junceaBrassica junceaBrassica napuse0
- Treatment
- highest Na/Ca ratioe0
- Outcome
- Shoot Na/Ca and Na/K ratiose0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot Na/Ca and Na/K ratios were increased in B. napus and B. juncea at the highest Na/Ca ratio of the growth medium.”
Claim · model-written summary
Shoot potassium selectivity decreased significantly in B. juncea at the highest Na/Ca ratio.
- Taxon
- B. junceaBrassica junceae0
- Treatment
- highest Na/Ca ratioe0
- Outcome
- ite0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. juncea in which it decreased significantly at the highest Na/Ca ratio.”
Claim · model-written summary
Root potassium selectivity increased in B. carinata.
- Taxon
- B. carinataBrassica carinatae0
- Outcome
- root K + selectivitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root K + selectivity increased in B. carinata.”
The same questions in other papers
calcium atom · yield · Brassica juncea (Indian mustard)Positive and negative results
1 in the opposite direction
- positive
calcium atom · yield · Brassica rapa (field mustard)Positive and negative results
1 in the opposite direction
- positive
calcium atom · yield · Brassica napus (oilseed rape)Positive and negative results
2 in the opposite direction
- positive
- positive
calcium atom · growth · Brassica juncea (Indian mustard)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
calcium atom · growth · Brassica napus (oilseed rape)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 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.