GROWTH, LEAF WATER POTENTIAL, PHOTOSYNTHETIC PIGMENTS, COMPATIBLE SOLUTES AND YIELD COMPONENTS IN COWPEA LANDRACES UNDER SALINITY
Soil salinity is a major constraint to food production because it limits crop yield. In this study, effect of applied NaCl on growth, proline, sugar content, leaf water potential, photosynthetic pigment concentrations and components of yield of five cowpea plant (Vigna unguiculata L. Walp) P1, P7,...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Editura Universităţii din Oradea
2024-11-01
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| Series: | Natural Resources and Sustainable Development |
| Subjects: | |
| Online Access: | https://www.nrsdj.com/issues-year-2024-2/growth,-leaf-water-potential,-photosynthetic-pigments,-compatible-solutes-and-yield-components-in-cowpea-landraces-under-salinity.html |
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| Summary: | Soil salinity is a major constraint to food production because it limits crop yield. In this study,
effect of applied NaCl on growth, proline, sugar content, leaf water potential, photosynthetic pigment
concentrations and components of yield of five cowpea plant (Vigna unguiculata L. Walp) P1, P7, P13,
P17 and P23was investigated. The experiment was carried out in pots under glasshouse at École
Nationale Supérieure Agronomique, Algeria during 2023. The soil used was irrigated with NaCl and
the rates of 1.93, 3.8, 4.7 and 6.0. dS m-1 NaCl. Salt stress was started 20 days after the start of the
experiment and during 2 months. Growth (height, number of leaves and leaf area) and yield (number
of pods / plant, length of pods / plant, weight of 100 seeds and number of seeds / pods) of the cowpea
plants was inhibited by salinity. Application of NaCl significantly decreased leaf water potential,
photosynthetic pigment (such as chlorophyll a, chlorophyll b, total chlorophyll and carotenoid).
However, it could stimulate traits that could lead to the survival of cowpea plant in saline environment
due to proline and sugar accumulations that increased as a result of salt stress. However, the effects
vary depending on the level of salt and the population concerned. P1, P7 and P17 were less affected
by salt than the sensitive cultivars P13 and P17.Our results suggests that the NaCl tolerance of this
cultivars is supported by better yield, the less pigment and leaf water potential and a higher osmotic
adjustment. |
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| ISSN: | 2066-6276 2601-5676 |