Document Details
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Document Type |
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Thesis |
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Document Title |
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EFFECTS OF SEEDS PRIMING TREATMENTS FOR IMPROVING SALT TOLERANCE OF CUCUMBER (CUCUMIS SATIVUS L.) AND SQUASH (CUCURBITA PEPO L.) AT GERMINATION, VEGETATIVE AND FLOWERING GROWTH STAGES تأثير المعاملات الأولية للبذور على تحمل الخيار والكوسة للإجهاد الملحي خلال مراحل الإنبات والنمو الخضري والإزهار |
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Subject |
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Faculty of Meteorology, Environment and Arid Land Agriculture |
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Document Language |
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Arabic |
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Abstract |
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This research studied the effect of the humic acid, lithovit and CaCl2 as priming agents, to alleviate the adverse effects of salinity stress on cucumber and squash crops. Three factorial experiments of each crop were carried out in a the lab., of plant tissue culture, Department of Arid Land Agriculture, Faculty of Meteorology, Environment, and Arid Land Agriculture. The field experiment ws conducted in the Agriculture Research station, King Abdulaziz University. The first experiment was conducted on of the effects of seed priming treatments and hydration time on seeds germination. The second experiment wase investigated the effects of seed priming on vegetative growth, while the third one was on the effects of seed priming on flowering and particularly sex ratio. All experiments were conducted under stress of four salt treatments 2000ppm, 4000ppm, 6000ppm and 8000ppm. The seed priming treatments were conducted using two concentrations of humic acid (0.5 and 1 g/l), lithovit (2.5 and 5 g/l) and CaCl2 (10 and 20 g/l). The primed seeds was incubated for 24 and 48 h. Each experiment was arranged in a split-split block design and the treatments were randomly distributed using the complete randomized design with three replications. The growth, morphological, flowering were measure during the germination, vegetative and flowering stages. The results realed that seed priming treatments significantly improved cucumber and squash germination, growth and yield under water salinity. The seed priming treatments 2.5 g.l-1 HA, 5 g.l-1 HA, 20 g.l-1 CaCl2 and 10 g.l-1 CaCl2 increased no. of fruits/plant under water salinity 3000 ppm by 20%, 28%, 28% and 32 % as compared to the non- primed seeds. Similarly, no. of fruits/plant was increased by 18%, 28%, 36% and 30% under waster salinity 9000 ppm as compared to the non-primed seeds. Under irrigation with salinity level 3000 ppm priming the cucumber seeds with 2.5 g.l-1 HA, 5 g.l-1 HA, 20 g.l-1 CaCl2 and 10 g.l-1 CaCl2 caused an increase of yield/plant by 49.31%, 54.79%, 63.33% and 50.40% as compared to non-primed seeds. Furthermore, the improvement percentages in yield of fresh fruits/plant under water salinity 9000 ppm due to seed priming treatments 2.5 g.l-1 HA, 5 g.l-1 |
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Supervisor |
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Dr. Zohair Mahmoud Mirdad |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1439 AH
2018 AD |
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Co-Supervisor |
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Dr. Magdi Ali Ahmed Mousa |
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Added Date |
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Thursday, June 7, 2018 |
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Researchers
| ناصر حمود البلوي | AL-Balawi, Naser Hamod | Researcher | Doctorate | |
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