Salwa, A.R. and Hammad, Kh. A. and Tantawy, Manal. F. (2010) Studies on salinity tolerance of two peanut cultivars in relation to growth, leaf water content. some chemical aspects and yield. Journal of Applied Sciences Research, 6 (10). pp. 1517-1526.
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Abstract
This field experiment was carried out through the successive growth seasons (Summer, 2008 and 2009). In El-Tina Plain area to study salinity tolerance of two peanut cultivars namely Gregory and Giza 6 and the soil salinity level effect on plant growth, yield, leaf water content, chemical composition and other parameters. Salinity levels of the three used soils were 7.55, 9.20 and 12.5dSm-1. The studies treatments were disturbed among the experimental plets in split design with six replicates. All farming processes for peanut plants were carried out according to recommendations of Ministry of Agriculture. At flower stage, the plant samples were taken from three replicates for estimate some vegetative growth parameters and chemical variables. On the other hand, other plants samples were taken from the other three replicates at maturity stage where its used to estimate the yield and the chemical composition of both straw and seeds. The obtained results cleared that, all studied characters of growth, total water content, free water content, relative water content, leaf water potential, photosynthetic pigments, total carbohydrates and non soluble carbohydrates showed a significant decrease by increasing salinity levels. Moreover data recorded a significant increase in total soluble sugars, leaf water deficit, bound water content, membrane integrity, proline and total free amino acids concentrations and enzyme activity as a result of increasing salt stress conditions. Gregory variety had the best growth and yield, and also its was more stable in its physiological and chemical component under salt stress conditions compared to variety Giza 6. So, Gregory variety was more tolerance to salinity stress compared to Giza 6 variety. The obtained data also show that, the yield of both straw and seeds and also its content of N, P and K were decreased with the increase the levels of soil salinity. Such decrease was found with oil and protein content of seeds. In two growth seasons, the previous decrease found with Gregory cultivar was lower than that found with Giza 6 cultivar.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Agric. Botany Dept., Faculty of Agric. Minufia, Univ., Shibin El-Kom, Egypt |
| Subjects: | Plant Production Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | Groundnut |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 03 Nov 2010 20:37 |
| Last Modified: | 29 Dec 2010 20:51 |
| Official URL: | http://www.insipub.com/jasr/2010/1517-1526.pdf |
| URI: | http://eprints.icrisat.ac.in/id/eprint/440 |
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