Abstract
Soil salinity is a critical problem for rice production and is also often associated with phosphors (P) deficiency. Plant hormones, like brassinosteroids, were shown to play a role in plant responses to different stresses and are also expected to mitigate salt stress. The aim of this study was to compare shoot growth and root architecture traits of two rice cultivars (INCA LP-5 and Perla de Cuba) during early plant development in response to salt, P limitation and a brassinosteroid. Seeds were placed in (I) paper rolls for 7 days and (II) mini-rhizotrons for 21 days without or with salt (50 mM NaCl), without or with 24-epibrassinolide (10−6 M) pre-treatment, and with two levels of P (10 or 1 ppm). The root system of LP-5 was larger in size and extent, while the roots of Perla were growing denser. Salt affected mainly the size- and extent-related root characteristics and explained about 70% of the variance. The effect of P was more pronounced without salt treatment. In Perla, P supply reduced the salt effect on root growth. The brassinosteroid had hardly any effect on the development of the plants in both experiments. Due to the high dependence on experimental factors, root length and related traits can be recommended for selecting young rice cultivars regarding salt stress and P deprivation.
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Claims 7
Claim · model-written summary
LP-5 had a larger root system in size and extent.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root system of LP-5 was larger in size and extent, while the roots of Perla were growing denser.”
t0“Rice Cultivars”
Claim · model-written summary
Perla roots grew more densely than LP-5 roots.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root system of LP-5 was larger in size and extent, while the roots of Perla were growing denser.”
t0“Rice Cultivars”
Claim · model-written summary
Salt mainly affected root size and extent traits and explained about 70% of variance.
- Taxon
- rice
Oryza sativat0 - Treatment
- Salte0
- Outcome
- size- and extent-related root characteristicse0
- Value
- about 70% of the variancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt affected mainly the size- and extent-related root characteristics and explained about 70% of the variance.”
t0“Rice Cultivars”
Claim · model-written summary
Phosphorus effects were more pronounced without salt.
- Taxon
- riceOryza sativat0
- Treatment
- Pe0
- Outcome
- effect of Pe0
- Direction
- more pronouncede0
- Comparator
- without salt treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of P was more pronounced without salt treatment.”
t0“Rice Cultivars”
Claim · model-written summary
Phosphorus supply reduced the salt effect on Perla root growth.
- Taxon
- riceOryza sativat0
- Material
- Perlae0
- Treatment
- P supplye0
- Outcome
- salt effect on root growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Perla, P supply reduced the salt effect on root growth.”
t0“Rice Cultivars”
Claim · model-written summary
Brassinosteroid had hardly any effect on plant development in both experiments.
- Taxon
- riceOryza sativat0
- Treatment
- brassinosteroide0
- Outcome
- development of the plantse0
- Direction
- hardly any effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The brassinosteroid had hardly any effect on the development of the plants in both experiments.”
t0“Rice Cultivars”
Claim · model-written summary
Root length and related traits are recommended for selection under salt and phosphorus stress.
- Taxon
- riceOryza sativae0
- Outcome
- root length and related traits can be recommended for selecting young rice cultivars regarding salt stress and P deprivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root length and related traits can be recommended for selecting young rice cultivars regarding salt stress and P deprivation”
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