Abstract
Abstract Iron + Zinc (applied to the soil as ferrous sulphate and zinc sulphate) were found to significantly increase the number ear heads per tiller, length of ear heads, number of grains per ear, grain yield per plant and the weight 1000 grains in proportion to its concentration used both in pot and field experiments. This was coupled with the increase in total carbohydrate, starch and crude protein contents of wheat grains. All these activities were found optimum at the identical concentration of Fe + Zn (@ 7.5 mg kg‐1 soil). A further increase in the exogenous iron and zinc concentrations (up to 12.5 mg kg‐1 soil) led to the sharp decline of all these activities near the control level. Yield characters were observed to be better supported in the field condition than in pot cultures. Since natural availability of iron and zinc in the soil are only 2–4 mg kg‐1 soil and 0.60 mg kg‐1 soil, respectively, it is apparently suggested that the threshold level of iron and zinc (@ 7.5 mg kg‐1 soil) has a definite role in the synthesis of carbohydrates, starch and protein contents in the wheat grains. It is further suggested that normal metabolism might be reasonably hindered due to an increased uptakability of Fe and Zn at their higher concentrations (@ 10 mg kg‐1 soil and 12.5 mg kg‐1 soil, respectively). This causes a reduction in the synthesis of chlorophyll and indole‐3‐acetic acid, leading to an inhibition of photosynthesis at grain filling stage and ultimately reduced total carbohydrate, starch and protein contents of grains, which might be a good reason for the production of inferior quality of wheat grains. The positive role of the threshold concentration (@ 7.5 mg kg‐1 soil) of exogenous iron and zinc in the growth and yield potentiality of wheat crop is, therefore, emphasized.
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Claims 11
Claim · model-written summary
Iron and zinc significantly increased ear heads per tiller, ear head length and grains per ear with concentration.
- Taxon
- triticum aestivumL.t0
- Treatment
- Iron + Zince0
- Outcome
- number ear heads per tiller, length of ear heads, number of grains per eare0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“Iron + Zinc (applied to the soil as ferrous sulphate and zinc sulphate) were found to significantly increase the number ear heads per tiller, length of ear heads, number of grains per ear, grain yield per plant and the weight 1000 grains in proportion to its concentration used both in pot and field experiments.”
t0“triticum aestivumL.”
Claim · model-written summary
Iron and zinc significantly increased grain yield per plant and 1000 grain weight.
- Taxon
- triticum aestivumL.t0
- Treatment
- Iron + Zince0
- Outcome
- grain yield per plant and the weight 1000 grainse0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“Iron + Zinc (applied to the soil as ferrous sulphate and zinc sulphate) were found to significantly increase the number ear heads per tiller, length of ear heads, number of grains per ear, grain yield per plant and the weight 1000 grains in proportion to its concentration used both in pot and field experiments.”
t0“triticum aestivumL.”
Claim · model-written summary
Wheat grain carbohydrate, starch and crude protein content increased with the fertilization.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Iron and zinc fertilizationt0
- Outcome
- total carbohydrate, starch and crude protein contents of wheat grainse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was coupled with the increase in total carbohydrate, starch and crude protein contents of wheat grains.”
t0“Iron and zinc fertilization”
Claim · model-written summary
Measured responses were optimal at 7.5 mg kg‐1 soil iron plus zinc.
Verbatim
e0“All these activities were found optimum at the identical concentration of Fe + Zn (@ 7.5 mg kg‐1 soil).”
t0“triticum aestivumL.”
Claim · model-written summary
Raising iron and zinc to 12.5 mg kg‐1 soil sharply reduced the measured responses near control.
Verbatim
e0“A further increase in the exogenous iron and zinc concentrations (up to 12.5 mg kg‐1 soil) led to the sharp decline of all these activities near the control level.”
t0“triticum aestivumL.”
Claim · model-written summary
Yield characters were better in field conditions than pot culture.
Verbatim
e0“Yield characters were observed to be better supported in the field condition than in pot cultures.”
t0“triticum aestivumL.”
Claim · model-written summary
The authors suggest 7.5 mg kg‐1 soil iron and zinc supports wheat grain carbohydrate, starch and protein synthesis.
- Taxon
- wheatTriticum aestivume0
- Treatment
- iron and zinc (@ 7.5 mg kg‐1 soil)e0
- Outcome
- synthesis of carbohydrates, starch and protein contentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the threshold level of iron and zinc (@ 7.5 mg kg‐1 soil) has a definite role in the synthesis of carbohydrates, starch and protein contents in the wheat grains”
Claim · model-written summary
The authors suggest higher iron and zinc uptake may hinder normal metabolism.
Verbatim
e0“normal metabolism might be reasonably hindered due to an increased uptakability of Fe and Zn at their higher concentrations (@ 10 mg kg‐1 soil and 12.5 mg kg‐1 soil, respectively)”
t0“triticum aestivumL.”
Claim · model-written summary
The authors suggest higher concentrations reduce chlorophyll and indole‐3‐acetic acid synthesis.
Verbatim
e0“This causes a reduction in the synthesis of chlorophyll and indole‐3‐acetic acid”
t0“triticum aestivumL.”
Claim · model-written summary
The authors suggest photosynthesis is inhibited at grain filling under higher concentrations.
Verbatim
e0“leading to an inhibition of photosynthesis at grain filling stage”
t0“triticum aestivumL.”
Claim · model-written summary
The authors suggest higher concentrations lower carbohydrate, starch and protein contents and grain quality.
- Taxon
- wheatTriticum aestivume0
- Outcome
- total carbohydrate, starch and protein contents of grainse0
- Direction
- reducede0
- Qualifier
- inferior quality of wheat grainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultimately reduced total carbohydrate, starch and protein contents of grains, which might be a good reason for the production of inferior quality of wheat grains”
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