Evaluation of Different Radish  (&amp;lt;i&amp;gt;Raphanus sativus&amp;lt;/i&amp;gt;) Genotypes under  Different Saline Regimes

Ayyub, C. M.; Shaheen, Muhammad Rashid; Raza, Samad; Yaqoob, Muhammad; Qadri, Rashad; Azam, Muhammad; Ghani, M. A.; Khan, Imran; Akhtar, Naheed

doi:10.4236/ajps.2016.76084

Cited by 9 publications

(8 citation statements)

References 10 publications

(10 reference statements)

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“…No effect of genotypes was observed on leaf chlorophyll content of the radish crop (Table 3). This behavior was not observed by Ayyub et al (2016), who tested six radish cultivars and found differences in this parameter. The increase in chlorophyll content provides greater development of chloroplasts and consequent addition in leaf nitrogen content (Piekielek & Fox, 1992;Smeal & Zhang, 1994).…”

Section: Resultsmentioning

confidence: 68%

Agronomic Performance of Radish Genotypes Under Different Irrigation Depths

et al. 2019

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In radish production, the choice of proper genotypes and irrigation regime is of great importance to achieve success. In light of this, the current study aimed to evaluate the agronomic performance of a few radish genotypes under different irrigation strategies. The plants were grown in the city of Unaí-MG, in Brazil, under field conditions, and during two cycles, one of 40 days (from February 28 to April 8, 2015) and other of 51 days (from May 9 to June 28, 2015). The experimental design was a randomized block design in a split-plot arrangement with four replications. The treatments consisted of four irrigation strategies (50, 75, 100, and 125% of crop evapotranspiration-ETc) applied by a dripping irrigation system, while subplots consisted of three radish cultivars (Comet, Saxa, and Crimson Giant). We evaluated the following parameters: root system depth, leaf chlorophyll content, shoot fresh matter, diameter and length of tuberous root, number, and mass of commercial and non-commercial tuberous roots, and water use efficiency. All the radish genotypes showed no differences for agronomic characteristics. Under Brazilian Cerrado conditions, the most suitable irrigation strategy for radish crops is 100% of ETc.

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Section: Resultsmentioning

confidence: 68%

Agronomic Performance of Radish Genotypes Under Different Irrigation Depths

et al. 2019

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“…Such results can be justified by the presence of salts in the soil solution, reducing the water absorption capacity of the plants and causing water stress as the saline concentration increased because, in this situation, the main defense mechanism of the plants includes A, gs, Ci and E (Parihar et al, 2015), which is why these variables are directly related and presented similar behaviors, negatively affecting the photosynthetic apparatus of the radish and, consequently, yield. Ayyub et al (2016), evaluating different radish genotypes under saline stress, emphasized that stomatal conductance decreased with an increasing salinity, where a lower stomatal condutace was observed with a conductivity of 7 dS m -1 and that the main effect of salinity is a reduction of photosynthetic processes. Sousa et al (2016b), evaluating gaseous exchanges in citrus irrigated with saline waters, observed a reduction of gs, A, E and internal efficiency of carboxylation as the ECw increased from 0.6 to 3.0 dS m -1 .…”

Section: Resultsmentioning

confidence: 99%

Agronomic performance and gaseous exchanges of the radish under saline stress and ascorbic acid application

Leal

Sousa

Silva

et al. 2019

Rev. Colomb. Cienc. Hortic.

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The radish is a short-cycle vegetable that has excellent nutritional and medicinal properties. It is considered rustic, meaning it tolerates adverse conditions with the possibility of being irrigated with saline water, which creates stress. In this context, this study aimed to evaluate the effect of electrical conductivities in irrigation water and doses of ascorbic acid on the agronomic performance and gaseous exchanges of radishes. This experiment was carried out in a protected environment at the Agricultural Sciences Center of the Federal University of Paraíba, Areia, Paraíba (Brazil). The experiment design used randomized blocks with five doses of ascorbic acid (0.0, 0.29, 1.0, 1.71 and 2.0 mM) and five electrical conductivities in the irrigation water (0.5, 1.3, 3.25, 5.2 and 6.0 dS m-1), with four replicates. The growth, gas exchange and production were evaluated. The doses of ascorbic acid were not significant. The increase in the electrical conductivities of the irrigation water provided a reduction in the agronomic performance and gas exchanges, except for the net photosynthesis, water use efficiency and instantaneous carboxylation efficiency, which were not significant. There was a relationship between the net photosynthesis, transpiration, internal concentration of CO2 and water use efficiency and the stomatal conductance. The agronomic performance and gaseous exchanges of the radish culture were influenced by the salinity. The foliar application of ascorbic acid did not influence the agronomic yield and gaseous exchanges of the radishes at the tested doses.

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“…Generally, a decrease in chlorophyll content caused by salinity has been reported by many researchers [ 22 , 27 , 28 ]. Otherwise, some authors [ 29 , 30 ] affirm that salinity reduces the chlorophyll content in salt-sensitive plants and increases it in salt-tolerant ones. Our data, in the control group, agree with those by Alamgir and Ali [ 31 ], which showed an increase in chlorophyll content in rice plants exposed to salt stress.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of Brassica napus Tolerance to High Saline Conditions by Seed Priming

Stassinos

Rossi

Borromeo

et al. 2021

Plants

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Plants grown in saline soils undergo osmotic and oxidative stresses, affecting growth and photosynthesis and, consequently, the yield. Therefore, the increase in soil salinity is a major threat to crop productivity worldwide. Plant’s tolerance can be ameliorated by applying simple methods that induce them to adopt morphological and physiological adjustments to counteract stress. In this work, we evaluated the effects of seed priming on salt stress response in three cultivars of rapeseed (Brassica napus L.) that had different tolerance levels. Seed chemical priming was performed with 2.5 mM spermine (SPM), 5 mM spermidine (SPD), 40 mM NaCl and 2.5 mM Ca (NO3)2. Primed and not primed seeds were sown on saline and not saline (controls) media, and morphological and physiological parameters were determined. Since SPD treatment was effective in reducing salinity negative effects on growth, membrane integrity and photosynthetic pigments, we selected this priming to further investigate plant salt stress response. The positive effects of this seed treatment on growth and physiological responses were evident when primed plants were compared to not primed ones, grown under the same saline conditions. SPD priming ameliorated the tolerance towards saline stress, in a genotype-independent manner, by increasing photosynthetic pigments, proline amounts and antioxidant responses in all cultivars exposed to salt. These results may open new perspectives for crop productivity in the struggle against soil salinization.

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Evaluation of Different Radish (<i>Raphanus sativus</i>) Genotypes under Different Saline Regimes

Cited by 9 publications

References 10 publications

Agronomic Performance of Radish Genotypes Under Different Irrigation Depths

Agronomic Performance of Radish Genotypes Under Different Irrigation Depths

Agronomic performance and gaseous exchanges of the radish under saline stress and ascorbic acid application

Enhancement of Brassica napus Tolerance to High Saline Conditions by Seed Priming

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