RESEARCH REGARDING THE WATER CONSUMPTION OF TOMATOES, GREEN PEPPER AND CUCUMBERS CULTIVATED IN SOLARIUMS

In such conditions, saving water represents a very important aspect, both economically and socially. But in horticulture saving water must consider another very important aspect, that of providing food for a continuously growing population. So horticultors have the difficult task of obtaining big productions as well as saving water. Our research come to support the cultivators who grow tomatoes, green peppers and cucumbers in solariums. Determining precisely the water consumption of this species will create the possibility of avoiding both the excess and the lack of water of the tomatoes, green peppers and cucumbers grown in solariums, each of them having negative effects on production. Establishing the best water regime of this crop will lead to the application of optimum water quantities, at the right time and by the most efficient irrigation methods. This way, the cultivators will have the possibility of obtaining high productions, of superior quality, justified economically

RESEARCH REGARDING THE WATER CONSUMPTION OF TOMATOES, GREEN PEPPER AND CUCUMBERS CULTIVATED IN SOLARIUMS

In such conditions, saving water represents a very important aspect, both economically and socially. But in horticulture saving water must consider another very important aspect, that of providing food for a continuously growing population. So horticultors have the difficult task of obtaining big productions as well as saving water. Our research come to support the cultivators who grow tomatoes, green peppers and cucumbers in solariums. Determining precisely the water consumption of this species will create the possibility of avoiding both the excess and the lack of water of the tomatoes, green peppers and cucumbers grown in solariums, each of them having negative effects on production. Establishing the best water regime of this crop will lead to the application of optimum water quantities, at the right time and by the most efficient irrigation methods. This way, the cultivators will have the possibility of obtaining high productions, of superior quality, justified economically

Proline and glycine betaine accumulation in two succulent halophytes under natural and experimental conditions

[EN] Proline (Pro) and glycine betaine (GB) contents were determined in two Mediterranean halophytes, Plantago crassifolia and Inula crithmoides, to assess their possible role in salt tolerance of both taxa. Plant material was collected in a littoral salt marsh under different environmental conditions, and from plants subjected to salt treatments in a growth chamber. Relative growth inhibition by NaCl indicated that I. crithmoides is more salt-tolerant than P. crassifolia, in agreement with the distribution of the two species in nature. Field and laboratory data confirmed GB as the major osmolyte responsible for osmotic adjustment in I. crithmoides, but with only a minor role if any as osmoprotectant in the salt tolerance of P. crassifolia. Under natural conditions, Pro contents were very low in both taxa, but increased to levels high enough to contribute significantly to osmotic balance when plants were artificially treated with 450 600mM NaCl higher salt concentrations than those they would normally encounter in their natural habitats. These data suggest that halophytes possess built-in mechanisms, such as accumulation of additional osmolytes, to rapidly adapt to increasing salinity levels in their natural ecosystems; for example, those expected to be caused by climate change in salt marshes in the Mediterranean region.This work was funded by a grant to O.V. from the Spanish Ministry of Science and Innovation (Project CGL2008-00438/BOS), with contribution from the European Regional Development Fund. COST Action FA0901: "Putting Halophytes to work - From Genes to Ecosystems" supported M. N. Grigore for his stay in Valencia within the frame of a Short-Term Scientific Mission. A. Tifrea was funded by the Erasmus fellowship programme for her stay in Valencia to carry out her Master Thesis.Pardo-Domenech, L.; Tifrea, A.; Grigore, M.; Boscaiu, M.; Vicente, O. (2016). Proline and glycine betaine accumulation in two succulent halophytes under natural and experimental conditions. Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology. 150(5):904-915. https://doi.org/10.1080/11263504.2014.990943S904915150