Abstract
The use of growth regulators in wheat aims to reduce problems caused by the lodging of plants. The aim of this study was to evaluate the growth and vigor expression of wheat seeds treated with a growth regulator and the fertilization of plants to achieve high yields. The cultivar used was OR Topázio, the treatments consisted of the combination of five rates of the trinexapac-ethyl [0 – no application; 200; 400; 600 e 800 mL of the commercial product ha-1] and eight harvesting dates [14, 28, 42, 56, 70, 84, 98 e 112 days after emergence ]. The experimental design was completely randomized, in a factorial scheme 5 x 8 (five rates and eight harvest dates) with four repetitions. The total dry matter, dry matter production rate, relative growth rate, net assimilation rate, conversion efficiency of solar energy, photoassimilate partition, harvest index, and seedling emergence index were evaluated. Allocation of total dry matter, relative growth rate, plant height and harvest index were reduced by the growth regulator, with varied intensity according to the rate applied. The net assimilation rate was reduced in plants subjected to 400, 600 and 800 mL ha-1. The seedling emergence and the speed of emergence index were not affected by the action of the growth regulator.
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Claims 5
Claim · model-written summary
Growth regulator treatment reduced total dry matter allocation, relative growth rate, plant height, and harvest index.
- Taxon
- Wheat Plants
Triticum aestivumt0 - Treatment
- growth regulatore0
- Outcome
- Allocation of total dry matter, relative growth rate, plant height and harvest indexe0
- Direction
- reducede0
- Qualifier
- with varied intensity according to the rate appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Allocation of total dry matter, relative growth rate, plant height and harvest index were reduced by the growth regulator, with varied intensity according to the rate applied.”
t0“Wheat Plants”
Claim · model-written summary
Net assimilation rate was reduced at 400 mL ha-1.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- 400e0
- Outcome
- net assimilation ratee0
- Direction
- reducede0
- Value
- 400e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net assimilation rate was reduced in plants subjected to 400, 600 and 800 mL ha-1.”
t0“Wheat Plants”
Claim · model-written summary
Net assimilation rate was reduced at 600 mL ha-1.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- 600e0
- Outcome
- net assimilation ratee0
- Direction
- reducede0
- Value
- 600e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net assimilation rate was reduced in plants subjected to 400, 600 and 800 mL ha-1.”
t0“Wheat Plants”
Claim · model-written summary
Net assimilation rate was reduced at 800 mL ha-1.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- 800 mL ha-1e0
- Outcome
- net assimilation ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net assimilation rate was reduced in plants subjected to 400, 600 and 800 mL ha-1.”
t0“Wheat Plants”
Claim · model-written summary
The growth regulator did not affect seedling emergence or emergence speed index.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- growth regulatore0
- Outcome
- seedling emergence and the speed of emergence indexe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedling emergence and the speed of emergence index were not affected by the action of the growth regulator.”
t0“Wheat Plants”
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