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Articolul precedent |
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SM ISO690:2012 ROTARU, Vladimir. Proline contents in two soybean cultivars in relation to nutrient supply under low soil moisture regime . In: Lucrări Ştiinţifice. Seria Horticultură, 2011, vol. 54, pp. 41-46. ISSN 1454-7376. |
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Lucrări Ştiinţifice. Seria Horticultură | ||||||
Volumul 54 / 2011 / ISSN 1454-7376 /ISSNe 2069-8175 | ||||||
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Pag. 41-46 | ||||||
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Proline accumulation is a common physiological response in many plants in response to a wide range of biotic and abiotic stresses. Response of free proline accumulation in two soybean (Glycine max.L.) cultivars to phosphorus (P) and iron (Fe) application under suboptimal water regime of soil at the critical flowering stage was studied in a pot experiment. P and Fe were applied at rate 100 mg and 5 mg per kg of soil, respectively. Plants were subjected to low water regime for 2 weeks at flowering stage. Plant dry matter accumulation of both cultivars increased with increasing P level regardless of soil water regimes. After two weeks of water stress (35% WHC- water holding capacity) dry mater production was significantly reduced whereas concentrations of free proline was increased in leaves and roots of both cultivars in treatment without fertilization. Cultivar Zodiac maintained higher level of proline accumulation than Licurici. Recovery upon re-watering was evidently in fertilized-plants than unfertilized plants. Cultivar Zodiac had a higher root/plant ratio of dry matter than Licurici under low nutrient and water environment. We suggest that application of nutrients could partially attenuate the adverse effect of drought on soybean productivity. |
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Cuvinte-cheie Glycine max. L., iron, phsophorus, proline, water stress, Glycine max. L., fier, Fosfor, polină, stres hidric |
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