Effect of salinity on chlorophyll concentration, leaf area, yield and yield components of rice genotypes grown under saline environment

Ali, Yousaf; Aslam, Z.; Ashraf, Muhammad; Tahir, G. R.

doi:10.1007/bf03325836

Cited by 169 publications

(122 citation statements)

References 2 publications

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“…Islam et al (2011) on hybrid rice also reported that grain yields decreased by the salinity. Ali et al (2004) also found the similar result on grain yield of rice. Devar et al, 2013 found that grain yield and stover yield significantly decrease under salt stress and proline application helps to ameliorate the salinity problem.…”

Section: Grain and Stover Yieldssupporting

confidence: 67%

Improvement of Salt Tolerance in Maize by Exogenous Application of Proline

Hasan

Kibria

Jahiruddin

et al. 2015

J. Environ. Sci. & Natural Resources

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Proline provides protection in plants against various abiotic stresses including salinity. The field experiment was conducted at the farmer's field of coastal area (Botiaghata, Khulna) to mitigate the adverse effects of salinity on growth and yield of maize by exogenous application of proline. In the experiment maize plants were treated with different concentrations of proline at seedling and/or vegetative stages. The plant growth parameters, grain and stover yields, nutrient uptake and K + /Na + ratio were recorded. All the yield contributing characters were significantly increased due to exogenous application of proline at different growth stages. Among the treatments, application of 100 mM proline at seedling and vegetative stages offered the highest grain and stover yields (5.7 t ha -1 and 9.8 t ha -1 , respectively) of maize which was followed by 100 mM proline application at seedling stage where grain and stover yields were 5.7 t ha -1 and 9.7 t/ha, respectively. However no significant differences were found between two treatments. Total N, P and S uptake (203.66, 23.24 and 23.14 kg ha -1 , respectively) were highest when the maize plants were treated with 100 mM proline at seedling and vegetative stages. The highest K + /Na + ratio both in grain (12.92) and stover (5.57) was also observed in the same treatment. Therefore, it can be concluded that exogenous application of proline improves salinity tolerance in maize by increasing nutrient uptake and probably due to increasing antioxidant defense mechanisms.

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Section: Grain and Stover Yieldssupporting

confidence: 67%

Improvement of Salt Tolerance in Maize by Exogenous Application of Proline

Hasan

Kibria

Jahiruddin

et al. 2015

J. Environ. Sci. & Natural Resources

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“…Salt tolerance in the Triticeae is associated with enhanced ability to discriminate between Na + and K + in the soil solution and to preferentially accumulate K + and exclude Na + (Omielan, et aI., 1991 andAli, et al, 2004). In the present study, almost all the wheat genotypes responded varyingly to external potassium application.…”

Section: Discussionmentioning

confidence: 52%

Potassium induced salinity tolerance in wheat (Triticum aestivum L.)

Shirazi

Ashraf

Khan

et al. 2005

Int. J. Environ. Sci. Technol.

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Water culture experiments were conducted to study the response of ten wheat genotypes to external K application (10 mmol KCI dm _ 3 ) at seedling stage under saline condition (0 and 100 mmol NaCl dm _ 3 ). The data showed that there was an increase in the shoot and root length with the application of external K. The increase was more pronounced under control than under saline conditions. The better performing genotypes under two treatments were Bhitai, NIAB-41, NIAB-I076 and Khirman. The enhanced growth of these genotypes under saline condition might be due to the quick response to external K application, resulting in high K/Na ratio. The results indicated that the genotypes, which have the ability of enhanced K/Na discrimination, might perform better under saline conditions when sufficient potassium is applied in the rooting medium.

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“…Proline application did not remarkably affect chlorophyll contents in BARI Hybrid Maize-5 induced by salt stress although increased chlorophyll contents in Hybrid Maize Pacific-987 were observed by proline under salt stress (Table 2). Reduction in chlorophyll content has been reported in plants in response to salt stress (Ali et al, 2004;Islam et al, 2007;Sobahan et al, 2012;Talat et al, 2013). Conversely, exogenous application of proline increased chlorophyll content in a variety of plants reported by several authors (Deivanai et al, 2011;Sobahan et al, 2012;Talat et al, 2013).…”

Section: K + /Namentioning

confidence: 95%

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

Alam

Islam

et al. 2017

Progress. Agric.

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Proline accumulation is the main adaptive mechanism to salinity in plants. The pot experiments were carried out to mitigate the adverse effects of NaCl stress on BARI Hybrid Maize-5 and Hybrid Maize Pacific-987 by exogenous application of proline. Plants were exposed to different concentrations of NaCl at vegetative stage. Proline solutions were sprayed over maize leaves at both vegetative and tasseling stages. NaCl stress caused significant reductions in plant growth of maize. NaCl stress at 50 mM drastically reduced the growth of maize plant. Salt stress also reduced reproductive growth, grain yield, chlorophyll contents, K+/Na+ ratio and nutrient (NPS) uptake in both maize varieties. Exogenously applied proline improved growth and grain yield of BARI Hybrid Maize-5 at 25 mM NaCl stress condition. Additionally, BARI Hybrid Maize-5 conferred tolerance to 50 mM NaCl stress with 25 mM proline. Proline application significantly increased K+/Na+ ratio and nutrient uptake by maize under salt stress. The present study suggests that proline improves salt tolerance of maize by increasing the K+/Na+ ratio and nutrient uptake, particularly P uptake.Progressive Agriculture 27 (4): 409-417, 2016

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Effect of salinity on chlorophyll concentration, leaf area, yield and yield components of rice genotypes grown under saline environment

Cited by 169 publications

References 2 publications

Improvement of Salt Tolerance in Maize by Exogenous Application of Proline

Improvement of Salt Tolerance in Maize by Exogenous Application of Proline

Potassium induced salinity tolerance in wheat (Triticum aestivum L.)

Exogenous proline enhances nutrient uptake and confers tolerance to salt stress in maize (Zea mays L.)

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