Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction
Pereskia aculeata Mill., popularly known in Brazil as “Ora-pro-nobis”, is an unconventional edible vegetable. Taking into account its potential for agronomic cultivation, this study aimed to evaluate the growth response of this plant under intermittent drought through controlled reductions in the su...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Goiás
2015-03-01
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| Series: | Pesquisa Agropecuária Tropical |
| Subjects: | |
| Online Access: | https://www.revistas.ufg.br/pat/article/view/27210/17926 |
| _version_ | 1818064777576972288 |
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| author | Carla Regina Amorim dos Anjos Queiroz Reginaldo Rodrigues de Andrade Sérgio Antônio Lemos de Morais Luiz Carlos Pavani |
| author_facet | Carla Regina Amorim dos Anjos Queiroz Reginaldo Rodrigues de Andrade Sérgio Antônio Lemos de Morais Luiz Carlos Pavani |
| author_sort | Carla Regina Amorim dos Anjos Queiroz |
| collection | DOAJ |
| description | Pereskia aculeata Mill., popularly known in Brazil as “Ora-pro-nobis”, is an unconventional edible vegetable. Taking into account its potential for agronomic cultivation, this study aimed to evaluate the growth response of this plant under intermittent drought through controlled reductions in the substrate matric potential, in a greenhouse. Treatments consisted of adding to the pots a volume of water to raise the matric potential to -5 kPa, according to the water retention curve in the substrate, whenever the mean substrate matric potential reached values between -10 kPa and -70 kPa, depending on the treatment. At 140 days after transplanting, leaf area and dry mass of leaves, stems and roots were determined. The intermittent reduction of the matric potential in the root zone of “Ora-pro-nobis” affected less the dry mass accumulation in leaves (reduction of 21.4%) than in stems (reduction of 48.1%) and roots (reduction of 63.7%), and that is interesting because leaves are the main commercial product of this plant. The treatment also modified the proportionality of dry mass allocation among plant parts and reduced the photosynthetic efficiency of leaves, fact evidenced by the linear increase of the specific leaf area (0.63 cm2 g-1kPa-1) and leaf area ratio (0.39 cm-2 g-1kPa-1), although not affecting directly the leaf area. |
| first_indexed | 2024-12-10T14:41:23Z |
| format | Article |
| id | doaj.art-8240b838a4eb4d2ca0c90b26c048d363 |
| institution | Directory Open Access Journal |
| issn | 1983-4063 |
| language | English |
| last_indexed | 2024-12-10T14:41:23Z |
| publishDate | 2015-03-01 |
| publisher | Universidade Federal de Goiás |
| record_format | Article |
| series | Pesquisa Agropecuária Tropical |
| spelling | doaj.art-8240b838a4eb4d2ca0c90b26c048d3632022-12-22T01:44:40ZengUniversidade Federal de GoiásPesquisa Agropecuária Tropical1983-40632015-03-014511810.1590/1983-40632015v4527210 Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reductionCarla Regina Amorim dos Anjos Queiroz0Reginaldo Rodrigues de Andrade1Sérgio Antônio Lemos de Morais2Luiz Carlos Pavani3Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro (IFTM), Câmpus Uberlândia, Uberlândia, MG, Brasil.Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro (IFTM), Câmpus Uberlândia, Uberlândia, MG, Brasil.Universidade Federal de Uberlândia (UFU), Instituto de Química, Uberlândia, MG, Brasil.Universidade Estadual Paulista “Júlio de Mesquita Filho” (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabal, SP, Brasil.Pereskia aculeata Mill., popularly known in Brazil as “Ora-pro-nobis”, is an unconventional edible vegetable. Taking into account its potential for agronomic cultivation, this study aimed to evaluate the growth response of this plant under intermittent drought through controlled reductions in the substrate matric potential, in a greenhouse. Treatments consisted of adding to the pots a volume of water to raise the matric potential to -5 kPa, according to the water retention curve in the substrate, whenever the mean substrate matric potential reached values between -10 kPa and -70 kPa, depending on the treatment. At 140 days after transplanting, leaf area and dry mass of leaves, stems and roots were determined. The intermittent reduction of the matric potential in the root zone of “Ora-pro-nobis” affected less the dry mass accumulation in leaves (reduction of 21.4%) than in stems (reduction of 48.1%) and roots (reduction of 63.7%), and that is interesting because leaves are the main commercial product of this plant. The treatment also modified the proportionality of dry mass allocation among plant parts and reduced the photosynthetic efficiency of leaves, fact evidenced by the linear increase of the specific leaf area (0.63 cm2 g-1kPa-1) and leaf area ratio (0.39 cm-2 g-1kPa-1), although not affecting directly the leaf area.https://www.revistas.ufg.br/pat/article/view/27210/17926Water deficitunconventional edible vegetable“Ora-pro-nobis” |
| spellingShingle | Carla Regina Amorim dos Anjos Queiroz Reginaldo Rodrigues de Andrade Sérgio Antônio Lemos de Morais Luiz Carlos Pavani Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction Pesquisa Agropecuária Tropical Water deficit unconventional edible vegetable “Ora-pro-nobis” |
| title | Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| title_full | Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| title_fullStr | Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| title_full_unstemmed | Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| title_short | Growing Pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| title_sort | growing pereskia aculeata under intermittent irrigation according to levels of matric potential reduction |
| topic | Water deficit unconventional edible vegetable “Ora-pro-nobis” |
| url | https://www.revistas.ufg.br/pat/article/view/27210/17926 |
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