&lt;b&gt;Vegetative growth response of cotton plants due to growth regulator supply via seeds

Ferrari, João Vitor; Júnior, Enes Furlani; Ferrari, Samuel; Luques, Ana Paula Portugal Gouvêa

doi:10.4025/actasciagron.v37i3.19664

Cited by 3 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Application of MC can be performed via foliar spraying or cotton seeds (Almeida & Rosolem, 2012; Ferrari et al., 2015). Foliar spraying is the most common practice for cotton crops (Echer & Rosolem, 2017).…”

Section: Introductionmentioning

confidence: 99%

Cotton root growth response to mepiquat chloride application in early reproductive stages are cultivar dependent

et al. 2021

View full text Add to dashboard Cite

Mepiquat chloride (MC) is essential to reduce shoot growth and improve cotton (Gossypium hirsutum L. var. latifolium Hutch) harvest index, but the effect of high rates on cotton root growth is not known yet. The objective of this study was to evaluate the effect of different rates of MC application on root and shoot growth of different cotton cultivars. Two studies were conducted in a greenhouse to (a) characterize the stage of greatest susceptibility to high rates of MC and (b) evaluate the response to MC on root growth of cultivars of different maturity cycles (FM 906GLT, early; TMG 44B2RF, mid‐early; TMG 81WS, late; and FM 985GLTP, late). Regardless of the cultivar, spraying of MC in the early reproductive stage (B3) reduced root length. These reductions began approximately 2 wk after spraying. But spraying MC in the late reproductive stage (F1) can increase root length. Application of up to 30 g ha−1 of MC hindered shoot growth for 2 wk, but applications of 60 g ha−1 hindered shoot growth for 3 wk. We recommend a maximum application of 30 g ha−1 of MC in the first application to reduce root growth damage and balance biomass production.

show abstract

Section: Introductionmentioning

confidence: 99%

Cotton root growth response to mepiquat chloride application in early reproductive stages are cultivar dependent

et al. 2021

View full text Add to dashboard Cite

show abstract

Mix of trinexapac-ethyl and nitrogen application to reduce upland rice plant height and increase yield

et al. 2021

View full text Add to dashboard Cite

The effects of growth regulators on the photosynthetic apparatus of the sweet pepper (Capsicum annuum L.) in relation to the productivity

Rogach¹,

Stasik²,

Kiriziy³

et al. 2023

Fiziol. rast. genet.

View full text Add to dashboard Cite

The effects of growth stimulants 6-benzylaminopurine (6-BAP), gibberellic acid (GA3) and 1-naphthaleneacetic acid (1-NAA) as well as gibberellin inhibitors tebuconazole (EW-250), ethephon (2-chloroethylphosphonic acid, 2-CEPA) and chloromequate chloride (ССС-750), which differ in their action mechanism, on growth, development, leaf apparatus formation, CO2 and H2O gas exchange, photochemical activity of Photosystem II (PSII) and productivity traits of sweet pepper plants were studied. It was shown that treatment with growth stimulants increased, and gibberellin inhibitors decreased the linear sizes of sweet pepper plants of the Antei variety. It was established that all growth regulators, except for 2-CEPA, increased the number and the mass of leaves on the plant. Under the action of all preparations, except for 2-CEPA, the area of the leaves increased. Gibberellin inhibitors and 6-BAP significantly increased the amount of chlorophyll in pepper leaves. However, it decreased under the action of GA3 and did not practically change in treatment with 1-NAA. All growth substances, except GA3, increased the total chlorophyll content in the plant. The impact of growth regulators on the activity of photosynthetic processes was more pronounced at the stage of fruit formation than at the flowering stage. The CO2 assimilation rate at the flowering stage increased under the treatment of 1-NAA, 6-BAP, 2-CEPA and EW-250, but decreased under the action of GA3 and CCC-750. At the same time, all studied growth regulators increased the CO2 assimilation rate at the stage of fruit formation. Changes in the CO2 assimilation rate were closely correlated with changes in stomatal conductance (r = 0.79—0.85). Growth regulators increased transpiration in the light at fruit formation stage while the transpiration in the dark was reduced at the flowering stage. Growth regulators increased the operating quantum efficiency of PSII in the light, photochemical quenching of chlorophyll fluorescence, and intensity of linear electron transport in chloroplasts, and reduced non-photochemical quenching (NPQ) fluorescence. The specified morphological, physiological and biochemical changes in plants of sweet pepper of the Antei variety contributed to improvement of crop productivity traits. The use of growth stimulants 6-BAP and GA3, and retardants EW-250 and ССС-750 was most effective.

show abstract

<b>Vegetative growth response of cotton plants due to growth regulator supply via seeds

Cited by 3 publications

References 14 publications

Cotton root growth response to mepiquat chloride application in early reproductive stages are cultivar dependent

Cotton root growth response to mepiquat chloride application in early reproductive stages are cultivar dependent

Mix of trinexapac-ethyl and nitrogen application to reduce upland rice plant height and increase yield

The effects of growth regulators on the photosynthetic apparatus of the sweet pepper (Capsicum annuum L.) in relation to the productivity

Contact Info

Product

Resources

About