TRINEXAPAC-ETHYL REDUCES PLANT HEIGHT AND SEED YIELD IN FORAGE SORGHUM

Authors

  • MARCOS PAULO MINGOTE JULIO Universidade Federal de São João del-Rei
  • PAULO CESAR MAGALHÃES EMBRAPA MILHO E SORGO
  • ATHOS RODRIGUES SOARES VIANA Universidade Federal de São João del-Rei
  • BRUNO HENRIQUE MINGOTE JULIO Universidade Federal de São João del-Rei
  • CRISLENE VIEIRA DOS SANTOS Universidade Federal de Viçosa
  • NADIA NARDELY LACERDA DURÃES PARRELLA UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI
  • CICERO BESERRA DE MENEZES EMBRAPA MILHO E SORGO

DOI:

https://doi.org/10.18512/rbms2021v20e1212

Keywords:

Sorghum bicolor, sorgo silageiro, produtividade de sementes de sorgo

Abstract

Forage sorghum presents tall plants, what makes mechanical
seed harvesting a difficult task. Plant hormones can reduce plant height and
facilitate the harvesting. Thus, the objective of this study was to evaluate
the effect of the growth regulator trinexapac-ethyl on plant height and seed
yield in forage sorghum. This research was carried out at Embrapa Maize
and Sorghum, in two seasons (2017 and 2018), in a randomized complete
block design, four replications and three varieties (BRS Ponta Negra, 1141574
and 0947216) under application of Trinexapac-ethyl in two stages of the plant
growth (V8, V12, V8 + V12). The characteristics evaluated were: plant height,
seed yield and mass of 1000 seeds. The effect of the hormone was significant
in both stages of growth, with a significant reduction in plant height. The
hormone applied twice at growth stages V8 + V12 had a greater effect in
reducing plant height. However, the hormone reduced seed yield in the three
varieties, what implies the need for further studies comparing the advantage
of plant height reduction and the loss in seed yield.

Author Biography

CICERO BESERRA DE MENEZES, EMBRAPA MILHO E SORGO

Núcleo de Recursos Genéticos e Desenvolvimento de Cultivares

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Published

2022-02-18

How to Cite

MINGOTE JULIO, M. P., MAGALHÃES, P. C., VIANA, A. R. S., MINGOTE JULIO, B. H., SANTOS, C. V. D., PARRELLA, N. N. L. D., & MENEZES, C. B. D. (2022). TRINEXAPAC-ETHYL REDUCES PLANT HEIGHT AND SEED YIELD IN FORAGE SORGHUM. REVISTA BRASILEIRA DE MILHO E SORGO, 20. https://doi.org/10.18512/rbms2021v20e1212

Issue

Vol. 20 (2021)

Section

Scientific Paper

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