Abstract
Abstract On base of the content of Pb in the soil under different land use patterns in Lanping Lead-zinc mining area, Yunnan in southwest China, the root morphology and leaf traits of maize in different concentration Pb (20, 40, 60, 80, 100, 150, 200, 500, 1000, 2000, 3000 mg/L) were analyzed. The results showed that maize germination rate, germination vigor and growth index decreased with the increase of Pb concentration. The root length, surface area of maize increased by 0.21%–81.58%, 8.99%–73.43%, 1.50%–77.37%, respectively, under 20–500 mg/L Pb concentration. However, these parameters under 1000–3000 mg/L Pb concentration decreased by 37.86%–553.54%, 44.99%–766.16%, 55.99%–92.81%, respectively, and these lowest value appeared in 3000 mg/L Pb treatment. The root volume of maize increased by 4.57%–89.25% in 20–80 mg/L Pb concentration, and it decreased with the increase of Pb concentration when the Pb concentration was higher than 80 mg/L and decreased by 94.13% in 3000 mg/L Pb. The root surface area and length of 0.50–1.00 diameter class were higher than those of other diameter classes, and these value of maize under 500 mg/L Pb were higher than those of other concentrations. The length and perimeter of maize leaves with the highest value of 220.36 and 962.68 mm, respectively appeared in 60 mg/L Pb treatment. The leaf width and area of maize with the highest value of 15.68 mm and 2448.31 mm 2 , respectively, appeared in 40 mg/L Pb treatment, which indicated that the leaf traits of maize were promoted by low concentration Pb and inhibited by high concentration Pb.
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Claims 12
Claim · model-written summary
Maize germination rate, vigor and growth index declined as Pb concentration increased.
- Treatment
- Pb concentratione0
- Outcome
- germination rate, germination vigor and growth indexe0
- Direction
- decreasede0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize germination rate, germination vigor and growth index decreased with the increase of Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize root length increased at 20–500 mg/L Pb.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root length, surface area of maize increased by 0.21%–81.58%, 8.99%–73.43%, 1.50%–77.37%, respectively, under 20–500 mg/L Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize root surface area increased at 20–500 mg/L Pb.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root length, surface area of maize increased by 0.21%–81.58%, 8.99%–73.43%, 1.50%–77.37%, respectively, under 20–500 mg/L Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize root length and surface area decreased at 1000–3000 mg/L Pb.
- Treatment
- 1000–3000 mg/L Pb concentratione0
- Outcome
- root length, surface areae1
- Direction
- decreasede0
- Qualifier
- lowest value appeared in 3000 mg/L Pb treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these parameters under 1000–3000 mg/L Pb concentration decreased by 37.86%–553.54%, 44.99%–766.16%, 55.99%–92.81%, respectively, and these lowest value appeared in 3000 mg/L Pb treatment”
e1“The root length, surface area of maize increased by 0.21%–81.58%, 8.99%–73.43%, 1.50%–77.37%, respectively, under 20–500 mg/L Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize root volume increased at 20–80 mg/L Pb.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root volume of maize increased by 4.57%–89.25% in 20–80 mg/L Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize root volume declined above 80 mg/L Pb, with a 94.13% decrease at 3000 mg/L.
- Treatment
- Pb concentration was higher than 80 mg/Le0
- Outcome
- root volumee1
- Direction
- decreasede0
- Value
- 94.13%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it decreased with the increase of Pb concentration when the Pb concentration was higher than 80 mg/L and decreased by 94.13% in 3000 mg/L Pb”
e1“The root volume of maize increased by 4.57%–89.25% in 20–80 mg/L Pb concentration”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Root surface area and length were greatest in the 0.50–1.00 diameter class and at 500 mg/L Pb.
- Organ / stage
- 0.50–1.00 diameter classe0
- Treatment
- 500 mg/L Pbe0
- Outcome
- root surface area and lengthe0
- Direction
- highere0
- Comparator
- other diameter classese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root surface area and length of 0.50–1.00 diameter class were higher than those of other diameter classes, and these value of maize under 500 mg/L Pb were higher than those of other concentrations”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize leaf length peaked at 220.36 mm under 60 mg/L Pb.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length and perimeter of maize leaves with the highest value of 220.36 and 962.68 mm, respectively appeared in 60 mg/L Pb treatment”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize leaf perimeter peaked at 962.68 mm under 60 mg/L Pb.
- Organ / stage
- leavese0
- Treatment
- 60 mg/L Pb treatmente0
- Outcome
- perimetere0
- Direction
- higheste0
- Value
- 962.68 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length and perimeter of maize leaves with the highest value of 220.36 and 962.68 mm, respectively appeared in 60 mg/L Pb treatment”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize leaf width peaked at 15.68 mm under 40 mg/L Pb.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf width and area of maize with the highest value of 15.68 mm and 2448.31 mm 2 , respectively, appeared in 40 mg/L Pb treatment”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Maize leaf area peaked at 2448.31 mm 2 under 40 mg/L Pb.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaf width and area of maize with the highest value of 15.68 mm and 2448.31 mm 2 , respectively, appeared in 40 mg/L Pb treatment”
t0“maize germination, root morphology and leaf trait”
Claim · model-written summary
Low Pb promoted maize leaf traits while high Pb inhibited them.
- Treatment
- Pbe0
- Outcome
- leaf traitse0
- Direction
- promotede0
- Qualifier
- low concentration Pb and inhibited by high concentration Pbe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf traits of maize were promoted by low concentration Pb and inhibited by high concentration Pb”
t0“maize germination, root morphology and leaf trait”
The same questions in other papers
lead atom · growth · Zea mays (maize)Results differ
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- negative
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See all 35 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.