Responses of Growth and Ion Uptake of Four Rose Rootstocks to Chloride- or Sulfate-dominated Salinity

Niu, Genhua; Rodriguez, Denise S.

doi:10.21273/jashs.133.5.663

Cited by 30 publications

(11 citation statements)

References 21 publications

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“…In the current study, a PPF of 1000 µmoL m −2 s −1 was chosen because during that time period inside the greenhouse, the maximum instant PPF was between 800 to nearly 1000 µmoL m −2 s −1 . Gas exchange rates of several cultivars of ornamental peppers (Niu, unpublished data) and roses [19] grown under nonsaline and moderate saline conditions were statistically the same when measured on a single young leaf with the same instrument as used in this study, while shoot growth was reduced significantly by the elevated salinity as seen in this study. These results may indicate that under low-to-moderate salinity, gas exchange rates of a healthy leaf are often not affected.…”

Section: Gas Exchange Ratessupporting

confidence: 66%

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Niu

Rodriguez

et al. 2012

ISRN Agronomy

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The growth and physiological responses of four maize inbred lines (CUBA1, B73, B5C2, and BR1) and four sorghum hybrids (SS304, NK7829, Sordan 79, and KS585) to salinity were determined. Fifteen days after sowing, seedlings were irrigated with nutrient solution (control) at electrical conductivity (EC) of 1.5 dS m−1or saline solution at EC of 8.0 dS m−1(salt treatment) for 40 days. Dry weight of shoots in maize was reduced by 58%, 65%, 62%, and 69% in CUBA1, B73, B5C2, and BR1, respectively, while that of sorghum was reduced by 51%, 56%, 56%, and 76% in SS304, NK7829, Sordan79, and KS585, respectively, in the salt treatment compared to their respective control. Salinity stress reduced all or some of the gas exchange parameters, leaf transpiration (E), stomatal conductance (gs), and net photosynthetic rate (Pn) in the late part of the experiment for both crops. Salinity treatment greatly increased Na+uptake in all maize genotypes but did not affect the Na+uptake in sorghum, regardless of genotype. In maize, CUBA1 was slightly more resistant to salt stress, while BR1 was more sensitive to salt stress. In sorghum, Sordan79 was the most tolerant genotype, and KS585 was the least tolerant genotype.

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Section: Gas Exchange Ratessupporting

confidence: 66%

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Niu

Rodriguez

et al. 2012

ISRN Agronomy

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“…In this experiment, we observed that R/S biomass ratio significantly increased under low water regime ( Fig. 1f; Additional file 1: Figure S1; Table 1), indicating that under water and nutrient shortage conditions, carbon translocated from leaves to roots, thereby increasing R/S biomass ratio [25]. The increased R/S biomass ratio during stress conditions could also be explained as one of the adaptive mechanisms of plants to make greater root surfaces for absorbing much water and nutrients from soils [26].…”

Section: Discussionmentioning

confidence: 73%

Improvement of growth performance of Amorpha fruticosa under contrasting regime of water and fertilizer in coal-contaminated spoils using response surface methodology

et al. 2020

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Background: Water availability and nutrient-status of soils play crucial roles in seedling establishment and plant survival in coal-spoiled areas worldwide. Restoration of spoils pertains to the application of proper doses of nutrients and water, and selection of particular plant species for efficient revegetation. This study aimed at examining the potential effects of different combinations of soil-water and fertilizers (nitrogen, N and phosphorus, P) on morpho-physiological and biochemical attributes of Amorpha fruticosa grown in coal-mined spoils. Three factors five-level central-composite-design with optimization technique response surface methodology (rsm) was used to optimize water irrigation and fertilizer application strategies. Results: Our results revealed a strong correlation between experimental data and predicted values developed from the rsm model. The best responses of A. fruticosa in terms of plant height, stem diameter, root length, and dry biomass were observed under a high-water regime. Low-water regime caused a notable reduction in growth-associated parameters, and fertilization with either N or P did not show positive effects on those parameters, indicating that soil-water was the most influential factor for growth performance. Leaf water potential, gas-exchange parameters, and chlorophyll content significantly increased under high levels of soil-water, N and P, suggesting a synergistic effect of these factors for the improvement of photosynthesis-related parameters. At low soil-water contents and N-P fertilizer application levels, enhanced accumulation of malondialdehyde and proline indicated that A. fruticosa suffered from oxidative and osmotic stresses. Amorpha fruticosa also responded to oxidative stress by accelerating the activities of superoxide dismutase, catalase, and peroxidase. The effects of both fertilizers relied on soilwater, and fertilization was most effective under well-watered conditions. The maximum growth of A. fruticosa was observed under the combination of soil-water, N-dose and P-dose at 76% field capacity, 52.0 mg kg − 1 and 49.0 mg kg − 1 , respectively.

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“…There was an EC ´ population interaction for the shoot and root biomass (Table 2). For four rootstocks of roses, the growth reduction varied with the rootstock and dominant salt type (Niu and Rodriguez, 2008). There were significant differences for shoot and root biomass among populations, except at 18.3 dS m −1 .…”

Section: Shoot and Root Biomassmentioning

confidence: 92%

“…At (1999), who found no differences in the alfalfa biomass in isoconductive Cl − or SO 4 2− solutions up to EC iw 11 dS m −1 . For four rootstocks of roses, the growth reduction varied with the rootstock and dominant salt type (Niu and Rodriguez, 2008).…”

Section: Shoot and Root Biomassmentioning

confidence: 99%

Evaluation of Alfalfa (Medicago sativa L.) Populations’ Response to Salinity Stress

Cornacchione

Suarez

2017

Crop Science

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Alfalfa (Medicago sativa L.) is a moderately salt‐tolerant crop with high economic return and is therefore more suitable for production with lower quality water than most high‐value crops. This study was conducted to examine the effect of water composition types (Cl− or SO42−) of irrigation water and five salinity levels (electrical conductivity of irrigation water [ECiw] = 0.85, 8, 13, 18.3, and 24.5 dS m−1) on biomass production, salt tolerance, and ion concentration of 15 alfalfa populations. The plants were grown in a greenhouse in 60 sand tanks for 347 d under salt treatment. There was no significant effect of water composition type on shoot and root biomass production. Water composition type × EC and water composition type x population interactions were also not significant. Salinity impact was population dependent (EC × population: P < 0.05), except at ECiw 18.3 dS m−1. Across all populations, shoot biomass was significantly reduced with increasing salinity to 77, 50, and 27% of the control at 13, 18.3, and 24.5 dS m−1, respectively. The ‘SISA14’ and ‘SW 8421S’ populations were the most productive under saline conditions with the highest degree of salt tolerance. The results showed that alfalfa biomass response to salinity did not depend on the type of salts (Cl− or SO42−). Shoot Cl− also did not correlate with relative biomass response. Thus, Cl− ion toxicity does not appear to be a factor in alfalfa salt tolerance for these populations. Although there was a correlation between salt tolerance and shoot Na+, the shoot ion concentration provides only a partial explanation of the relative salt tolerance of the alfalfa populations.

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Responses of Growth and Ion Uptake of Four Rose Rootstocks to Chloride- or Sulfate-dominated Salinity

Cited by 30 publications

References 21 publications

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Improvement of growth performance of Amorpha fruticosa under contrasting regime of water and fertilizer in coal-contaminated spoils using response surface methodology

Evaluation of Alfalfa (Medicago sativa L.) Populations’ Response to Salinity Stress

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