Abstract
Saline-sodic soil is one of the major threats to crop growth, production, and quality. Biochar amendment could alleviate the adverse impacts of saline-sodic stress in crops. However, the effect of biochar on root morphological, root physiological functions, and rice yield in saline-sodic paddy soil has not been studied. Here, the underlying mechanisms of positive effects in morphological characteristics and physiological functions of rice roots under heavily saline-sodic paddy soil amended with biochar were evaluated. The soil was amended with biochar at zero-biochar (CK), 15g kg-1 soil (T1), 30 g kg-1 soil (T2), or 45 g kg-1 soil (T3). Biochar addition significantly increased root length, root volume, root dry weight, and root-shoot ratio at all growth stages. The root absorption vigor and root oxidization capacity were enhanced and increased significantly by decreasing Na+/K+ ratio, MDA content, and increasing K+ concentration in rice root after biochar amendment. The root bleeding rate of biochar treatments at different growth stage were 11.01% to 67.73% greater than these of CK. The yield of rice was increased significantly under saline-sodic paddy soil after biochar amendment. It was concluded that biochar had positive effect on the morphological characteristics and physiological functions in rice roots in saline-sodic paddy soil.
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Claims 7
Claim · model-written summary
Biochar significantly increased root length, volume and dry weight at all growth stages.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- roote0
- Treatment
- Biochar additione0
- Outcome
- root length, root volume, root dry weighte0
- Direction
- increasede0
- Qualifier
- at all growth stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar addition significantly increased root length, root volume, root dry weight, and root-shoot ratio at all growth stages”
t0“rice”
Claim · model-written summary
Biochar significantly increased root-shoot ratio at all growth stages.
- Taxon
- riceOryza sativat0
- Treatment
- Biochar additione0
- Outcome
- root-shoot ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar addition significantly increased root length, root volume, root dry weight, and root-shoot ratio at all growth stages”
t0“rice”
Claim · model-written summary
Biochar enhanced root absorption vigor and oxidation capacity.
- Taxon
- riceOryza sativae0
- Treatment
- biochar amendmente0
- Outcome
- root absorption vigor and root oxidization capacitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root absorption vigor and root oxidization capacity were enhanced and increased significantly by decreasing Na+/K+ ratio, MDA content, and increasing K+ concentration in rice root after biochar amendment”
Claim · model-written summary
Biochar decreased root Na+/K+ ratio and MDA content.
- Taxon
- riceOryza sativat0
- Organ / stage
- roote0
- Treatment
- biochar amendmente0
- Outcome
- Na+/K+ ratio, MDA contente0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreasing Na+/K+ ratio, MDA content, and increasing K+ concentration in rice root after biochar amendment”
t0“rice”
Claim · model-written summary
Biochar increased rice root potassium concentration.
- Taxon
- riceOryza sativae0
- Organ / stage
- roote0
- Treatment
- biochar amendmente0
- Outcome
- K+ concentratione0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing K+ concentration in rice root after biochar amendment”
Claim · model-written summary
Biochar root bleeding rates were 11.01% to 67.73% greater than CK.
- Taxon
- riceOryza sativat0
- Treatment
- biochar treatmentse0
- Outcome
- root bleeding ratee0
- Direction
- greatere0
- Value
- 11.01% to 67.73%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root bleeding rate of biochar treatments at different growth stage were 11.01% to 67.73% greater than these of CK”
t0“rice”
Claim · model-written summary
Biochar significantly increased rice yield in saline-sodic paddy soil.
- Taxon
- riceOryza sativae0
- Treatment
- biochar amendmente0
- Outcome
- yielde0
- Direction
- increasede0
- Setting
- saline-sodic paddy soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of rice was increased significantly under saline-sodic paddy soil after biochar amendment”
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