Abstract
Abstract A field experiment was conducted to investigate the effects of paclobutrazol on ear characteristics and grain yield by regulating root growth and root-bleeding sap of maize crop. Seed-soaking at rate of 0 (CK1), 200 (S1), 300 (S2), and 400 (S3) mg L −1 , and seed-dressing at rate of 0 (CK2), 1.5 (D1), 2.5 (D2), and 3.5 (D3) g kg −1 were used. Our results showed that paclobutrazol improved the ear characteristics and grain yield, and were consistently higher than control during 2015–2016. The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively. Moreover, paclobutrazol-treated maize had improved root-length density (RLD), root-surface area density (RSD) and root-weight density (RWD) at most of the soil profiles (0–70 cm for seed-soaking, 0–60 cm for seed-dressing) and was attributed to enhancing the grain yield. In addition, root-activity, root-bleeding sap, root dry weight, diameter and root/shoot ratio increased by paclobutrazol, with highest values achieved in S2 and D3 treatments, across the whole growth stages in 2015–2016. Our results suggested that paclobutrazol could efficiently be used to enhance root-physiological and morphological characteristics, resulting in higher grain yield.
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Claims 9
Claim · model-written summary
Paclobutrazol improved ear characteristics.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“paclobutrazol improved the ear characteristics and grain yield, and were consistently higher than control during 2015–2016”
t0“maize grain yield”
Claim · model-written summary
S1 grain yield was 18.9% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
S2 grain yield was 61.3% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
S3 grain yield was 45.9% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
D1 grain yield was 20.2% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
D2 grain yield was 33.3% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
D3 grain yield was 45.2% higher than control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average grain yield of S1, S2 and S3 were 18.9%, 61.3%, and 45.9% higher, while for D1, D2 and D3 were 20.2%, 33.3%, and 45.2%, compared to CK, respectively”
t0“maize grain yield”
Claim · model-written summary
Paclobutrazol improved root-length, surface-area and weight densities.
- Treatment
- paclobutrazol-treatede0
- Outcome
- root-length density (RLD), root-surface area density (RSD) and root-weight density (RWD)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“paclobutrazol-treated maize had improved root-length density (RLD), root-surface area density (RSD) and root-weight density (RWD) at most of the soil profiles (0–70 cm for seed-soaking, 0–60 cm for seed-dressing)”
Claim · model-written summary
Paclobutrazol increased root activity, bleeding sap, dry weight, diameter and root/shoot ratio.
- Treatment
- paclobutrazole0
- Outcome
- root-activity, root-bleeding sap, root dry weight, diameter and root/shoot ratioe0
- Direction
- increasede0
- Qualifier
- highest values achieved in S2 and D3 treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root-activity, root-bleeding sap, root dry weight, diameter and root/shoot ratio increased by paclobutrazol, with highest values achieved in S2 and D3 treatments, across the whole growth stages in 2015–2016”
t0“maize grain yield”
The same questions in other papers
paclobutrazol · growth · Zea mays (maize)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
3 papers more in this group
See all 7 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.