Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase
ABSTRACT: Cotton cultivation in Brazil tends to occur mostly in the rainy season, and at the time of developing the crop there are often prolonged periods of low solar radiation. The objective of this work was to evaluate the root development of cotton cultivars subjected to shading in the initial...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
2019-01-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100200&lng=en&tlng=en |
| _version_ | 1811339964913287168 |
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| author | Fábio Rafael Echer Priscila Roberta Leme Zanfolin Ana Carolina Monico Moreira Ana Cláudia Pacheco Santos Pedro Henrique Gorni |
| author_facet | Fábio Rafael Echer Priscila Roberta Leme Zanfolin Ana Carolina Monico Moreira Ana Cláudia Pacheco Santos Pedro Henrique Gorni |
| author_sort | Fábio Rafael Echer |
| collection | DOAJ |
| description | ABSTRACT: Cotton cultivation in Brazil tends to occur mostly in the rainy season, and at the time of developing the crop there are often prolonged periods of low solar radiation. The objective of this work was to evaluate the root development of cotton cultivars subjected to shading in the initial phase. The experiment was carried out in a greenhouse, using rhizotrons. The experimental design was a 2x2 factorial in randomized blocks with five replications. The treatments were composed of cotton cultivars TMG 1WS (early) and TMG 8WS (late) and luminosity conditions: non-shaded and shaded (50% reduction of luminosity). There were no interactions between the factors “shading” and “cultivars” for any parameter evaluated. Shading reduced total and lateral root growth from the 21 days after emergence (DAE) and the main root at 24DAE. Shading caused reductions in length (60%), surface (65%), mean diameter (15%), root volume (69%), root dry matter mass (83%) and shoot (64%), as well as decreasing the content (36%) and the accumulation of carbohydrates in the shoot (73%). Shading at early cotton development reduces the shoot carbohydrates production, affecting dry matter accumulation and root growth, and this response is independent of the cultivar. |
| first_indexed | 2024-04-13T18:35:13Z |
| format | Article |
| id | doaj.art-836cc0892dff44cfada269c1e6062a89 |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-04-13T18:35:13Z |
| publishDate | 2019-01-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-836cc0892dff44cfada269c1e6062a892022-12-22T02:34:55ZengUniversidade Federal de Santa MariaCiência Rural1678-45962019-01-0149110.1590/0103-8478cr20180749S0103-84782019000100200Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phaseFábio Rafael EcherPriscila Roberta Leme ZanfolinAna Carolina Monico MoreiraAna Cláudia Pacheco SantosPedro Henrique GorniABSTRACT: Cotton cultivation in Brazil tends to occur mostly in the rainy season, and at the time of developing the crop there are often prolonged periods of low solar radiation. The objective of this work was to evaluate the root development of cotton cultivars subjected to shading in the initial phase. The experiment was carried out in a greenhouse, using rhizotrons. The experimental design was a 2x2 factorial in randomized blocks with five replications. The treatments were composed of cotton cultivars TMG 1WS (early) and TMG 8WS (late) and luminosity conditions: non-shaded and shaded (50% reduction of luminosity). There were no interactions between the factors “shading” and “cultivars” for any parameter evaluated. Shading reduced total and lateral root growth from the 21 days after emergence (DAE) and the main root at 24DAE. Shading caused reductions in length (60%), surface (65%), mean diameter (15%), root volume (69%), root dry matter mass (83%) and shoot (64%), as well as decreasing the content (36%) and the accumulation of carbohydrates in the shoot (73%). Shading at early cotton development reduces the shoot carbohydrates production, affecting dry matter accumulation and root growth, and this response is independent of the cultivar.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100200&lng=en&tlng=encomprimento da raizpeso secoradiação |
| spellingShingle | Fábio Rafael Echer Priscila Roberta Leme Zanfolin Ana Carolina Monico Moreira Ana Cláudia Pacheco Santos Pedro Henrique Gorni Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase Ciência Rural comprimento da raiz peso seco radiação |
| title | Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| title_full | Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| title_fullStr | Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| title_full_unstemmed | Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| title_short | Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| title_sort | root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase |
| topic | comprimento da raiz peso seco radiação |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100200&lng=en&tlng=en |
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