Abstract
Metal ion contamination in the environment causes hazardous effects on plant growth, yield production, and also led to physical and chemical changes. Sunflower(Helianthus annus L.) plant is added to be one of the most edible seed crop growing in harsh climatic regions.it also have good water use efficiency. The study remains unclear about the physiological growth of sunflower with treatment of Zinc. A pot experiment was conducted in the old Botanical Garden at University of Agriculture, Faisalabad to analyze and check the impact of heavy metal zinc sulphat stress on sunflower (Heliantuus annuus) two hybrids FH687 and FH674. After three weeks varying concentration of zinc sulphate (0mM, 20mM and 40mM) along with 250ml tap water was applied in rooting medium. Every day 250ml water were applied to each pots .The crop was harvested after 45 days and morphological parameters were studied such as root length, shoot length, root weight, shoot weight and number of leaves. Zn stress significantly reduced the growth attributes. A marked drop in all morphophysiological attributes such as root length, leaf number and shoot length was recorded. Maximum reduction of growth, biochemical and physiological parameters was noted at 40mM concentration of zinc. Zinc toxicity involve in inhibition of cytoplasmic enzymes and damage to cell structures due to oxidative stress.it alter the catalytic function of enzymes which damage the cellular membranes and inhibit root growth. Zinc stress cause maximum effect on hybrid FH674 as compared to other hybrid FH687.
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Claims 5
Claim · model-written summary
Zinc stress significantly reduced the growth attributes of sunflower.
- Taxon
- sunflower
Helianthus annuuse1 - Treatment
- zinc sulphatee2
- Outcome
- growth attributese0
- Direction
- reducede0
- Comparator
- 0mMe2
- Setting
- old Botanical Garden at University of Agriculture, Faisalabade3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn stress significantly reduced the growth attributes”
e1“heavy metal zinc sulphat stress on sunflower”
e2“varying concentration of zinc sulphate (0mM, 20mM and 40mM)”
e3“A pot experiment was conducted in the old Botanical Garden at University of Agriculture, Faisalabad”
Claim · model-written summary
Zinc stress caused a marked drop in root length, leaf number and shoot length of sunflower.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- Zn stresse0
- Outcome
- root length, leaf number and shoot lengthe4
- Direction
- marked drope4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn stress significantly reduced the growth attributes”
e1“heavy metal zinc sulphat stress on sunflower”
e4“A marked drop in all morphophysiological attributes such as root length, leaf number and shoot length was recorded”
Claim · model-written summary
Maximum reduction of growth, biochemical and physiological parameters occurred at 40mM zinc.
- Taxon
- sunflowerHelianthus annuuse1
- Treatment
- 40mM concentration of zince5
- Outcome
- growth, biochemical and physiological parameterse5
- Direction
- Maximum reductione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“heavy metal zinc sulphat stress on sunflower”
e5“Maximum reduction of growth, biochemical and physiological parameters was noted at 40mM concentration of zinc”
Claim · model-written summary
Zinc stress had a maximum effect on hybrid FH674 compared with hybrid FH687.
- Taxon
- sunflowerHelianthus annuuse1
- Material
- FH674e6
- Treatment
- Zinc stresse6
- Outcome
- effecte6
- Direction
- maximume6
- Comparator
- FH687e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“heavy metal zinc sulphat stress on sunflower”
e6“Zinc stress cause maximum effect on hybrid FH674 as compared to other hybrid FH687”
Claim · model-written summary
Zinc toxicity is proposed to inhibit cytoplasmic enzymes and damage cell structures through oxidative stress, thereby inhibiting root growth.
- Taxon
- sunflowerHelianthus annuuse1
- Outcome
- root growthe2
- Qualifier
- damage to cell structures due to oxidative stresse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“heavy metal zinc sulphat stress on sunflower”
e7“Zinc toxicity involve in inhibition of cytoplasmic enzymes and damage to cell structures due to oxidative stress”
e2“which damage the cellular membranes and inhibit root growth”
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