2009
DOI: 10.1590/s0103-84782009005000236
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Desenvolvimento do algodoeiro em resposta a modo de aplicação e doses de cloreto de mepiquat via sementes

Abstract: A aplicação do regulador de crescimento via embebição de sementes apresenta alguns inconvenientes, dentre eles, a necessidade de secagem das sementes após o tratamento. O objetivo do trabalho foi avaliar o efeito do tratamento de

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Cited by 9 publications
(7 citation statements)
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“…This effect is in agreement with references mentioning that auxin inhibitors suppress the formation of lateral roots (Muday & Haworth, 1994), causing the taproot to elongate for a longer time until the first secondary roots are emitted. The lack of effects by MC alone on root evaluations is in accordance with results from Nagashima et al (2010a) and Almeida & Rosolem (2012) after testing different rates of mepiquat chloride by treatment of seeds. In experiment II, the increase of radicle length by the longest storage period when the MC treatment was used does not necessarily indicate an effect on the treatment of seeds since there was no difference in comparison with the control (Table 4).…”
Section: Resultssupporting
confidence: 89%
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“…This effect is in agreement with references mentioning that auxin inhibitors suppress the formation of lateral roots (Muday & Haworth, 1994), causing the taproot to elongate for a longer time until the first secondary roots are emitted. The lack of effects by MC alone on root evaluations is in accordance with results from Nagashima et al (2010a) and Almeida & Rosolem (2012) after testing different rates of mepiquat chloride by treatment of seeds. In experiment II, the increase of radicle length by the longest storage period when the MC treatment was used does not necessarily indicate an effect on the treatment of seeds since there was no difference in comparison with the control (Table 4).…”
Section: Resultssupporting
confidence: 89%
“…In comparing the results of seed treatment, plant height and height of cotyledon node were decreased by plant growth regulators (Tables 1 and 2), according to results of previous experiments (Iqbal et al, 2005;Nagashima et al, 2005;Nagashima et al, 2010a;Nagashima et al, 2010b). The heightgrowth rates calculated from original height data revealed that the treatment of seeds with plant growth regulators retarded shoot growth until 31 DAE (MC and the lowest MC+CY rate) and 38 DAE (the highest MC+CY rate) compared with the control (data not shown).…”
Section: Resultsmentioning
confidence: 60%
“…it was found that the method of split application from MC provides reducing of plant height, resulting in up to 0.37m difference among treatments. These results highlight the efficiency of the use of MC as growth regulator and a systemic product, mainly absorbed by the green parts of the plan and also included in the group of inhibitors of gibberellic acid biosynthesis (cell elongation inhibitor) (Taiz & Zeiger, 2009, Nagashima et al, 2010, Rosolem et al, 2013. Zanon (2002) said that even using or not growth regulator, the differences range in the order of 0.19 m between the treatments.…”
Section: Resultsmentioning
confidence: 79%
“…Segundo os autores a redução e a duração do efeito redutor estão diretamente relacionadas à concentração utilizada. Nagashima et al (2010), ao conduzirem experimento em casa de vegetação utilizando sementes de algodão da linhagem PR 02-307 sem tratamento e com aplicação direta de Cloreto de Mepiquat nas concentrações de 3,75 e 7,5 g i.a. kg -1 sobre as sementes e embebidas em solução com as mesmas concentrações, observaram que o Cloreto de Mepiquat pode ser usado no tratamento de sementes, tanto por embebição quanto por aplicação direta e, independente da concentração, os efeitos são semelhantes na redução da altura e crescimento dos ramos do algodoeiro, com efeito mais acentuado com o aumento das concentrações dentro da faixa estudada.…”
Section: Introductionunclassified