Morpho-physiological responses of maize hybrids as a function prohexadione calcium doses applied in the vegetative phase
Keywords:
gibberellins inhibitors, plant growth regulator, Zea mays L.Abstract
Plant growth regulator prohexadione use in maize cultivation is recent, but conflicting results have been obtained on development of its vegetative structures. The aim of this study was to assess the effects of prohexadione applied in the vegetative phase, on the response of the morphophysiological parameters of maize. The pot experiments were conducted in greenhouse, in the 2017/2018 and 2018/2019 seasons. The randomized block design was arranged in a 2x7 factorial scheme with six repetitions. The main factor was growing seasons 2017/2018 and 2018/2019, and the sub factor were the growth regulator prohexadione doses: 0; 50; 100; 150; 200; 250 and 300 g ai (active ingredient) ha-1, applied on plants in V7 stage. The hybrids AS1757VTPRO3 and AG9025VTPRO3 were tested, and each hybrid consisted of an independent experiment. The application of prohexadione was an effective strategy to restricte the longitudinal growth of the plants of both hybrids. In hybrid AS1757VTPRO3, plant height was restricted up to 46% and 47%, in the 2017/2018 and 2018/2019 growing season, respectively. The reduced biological yield and kernel row number per ear in the hybrid AS1757VTPRO3 and increased the NDVI and SPAD chlorophyll index. In hybrid AG9025VTPRO3 there was a restriction on plant height growth of 53% and 57% in the 2017/2018 and 2018/2019 growing season, respectively. But the prohexadione allowed the linear increase of the leaf area in the hybrid AG9025VTPRO3. The prohexadione application leads to a decreased plants and ear insertion heights, tassel and peduncle length in a manner dependent of growing season, dose and hybrid.
References
Borrás, L., Maddoni, G. & Otegui, M. E. (2003). Leaf senescence in maize hybrids: plant population, row spacing and kernel set effects. Field Crops Research, 82, 13-26.
BRASIL- Ministério da Agricultura, Pecuária e Abastecimento (2019). Agrofit: Phytosanitary Pesticide Systems. (Agrofit: Sistemas de Agrotóxicos Fitossanitários.) Available online: http://agrofit.agricultura.gov.br/agrofit_cons/principal_agrofit_cons. Accessed 26 February 2019 (Br).
CQFS-RS/SC- Comissão de Química e Fertilidade do Solo- RS/SC (2016). Fertilization and liming rules for the states of Rio Grande do Sul and Santa Catarina. (Manual de adubação e de calagem para os estados do Rio Grande do Sul e Santa Catarina.) Porto Alegre: SBCS - Núcleo Regional Sul/UFRGS (Br).
Davies, P. J. (2010). The plant hormones: their nature, occurrence and functions. In: Davies, P. J. (ed.). Plant Hormones: biosynthesis, signal transduction, action! 3nd ed. Dordrecht: Springer.
Dourado Neto, D., Dario, G. J. A., Barbieri, A. P. P. & Martin, T. N. (2014). Biostimulant action on agronomic efficiency of corn and common beans. Bioscience Journal, 30, 371-379.
EMBRAPA- Empresa Brasileira de Pesquisa Agropecuária (2013). Brazilian system of soil classification. (Sistema brasileiro de classificação de solos.) 3nd ed. Brasília, DF. (Br).
Espindula, M. C., Rocha, V. S., Fontes, P. C. R., Silva, R. C. C. & Souza, L. T. (2009). Effect of nitrogen and trinexapac-ethyl rates on the SPAD index of wheat leaves. Journal of Plant Nutrition, 32, 1956-1964.
Espindula, M. C., Rocha, V. S., Souza, L. S., Souza, A. S. &Grossi, J. A. S. (2010). Effects of growth regulators on elongation of wheat stem. Acta Scientiarum. Agronomy, 32, 109-116.
Evans, J. R., Evans, R. R. & Regusci, C. L. (1999). Mode of action, metabolism, and uptake of BAS 125W prohexadione-calcium. Hort. Science, 34, 1200-1201.
Hawerroth, M. C., Silva, J. A. G., Souza, C. A., Oliveira, A. C., Luche, H. S., Zimmer, C. M., Hawerroth, F. J., Schiavo, J. & Sponchiado, J. C. (2015). Lodging reduction in white oat using the plant growth regulator trinexapac-ethyl. Pesquisa Agropecuária Brasileira, 50, 115-125.
Kim, S., Han, C., Shin, J. & Kwon, T. (2018). Effects of paclobutrazol and prohexadione-Ca on seed yield, and content of oils and gibberellin in flax grown in a greenhouse. Korean Journal of Crop Science, 63, 265-271.
Leolato, L. S., Sangoi, L., Durli, M. M., Panison, F. & Voss, R. (2017). Growth regulator and maize response to the increase in plant density. Pesquisa Agropecuária Brasileira, 52, 997-1005.
Mendes Fagherazzi, M., Souza, C. A., Stefen, D. L. V., Zanesco, P. R., Junkes, G. V., Coelho, C. M. M. & Sangoi, L. (2018). Phenological sensitivity of two maize cultivars to trinexapac- ethyl. Planta Daninha, 36, 1-10.
Na, C., Hamayun, M., Khan, A. L., Kim, Y., Choi, K., Kang, S., Kim, S., Kim, J., Won, J. & Lee, I. (2011). Influence of prohexadione-calcium, trinexapac-ethyl and hexaconazole on lodging characteristic and gibberellin biosynthesis of rice (Oryza sativa L.). African Journal of Biotechnology, 10, 13097-13106.
Ozbay, N. & Ergun, N. (2015). Prohexadione calcium on the growth and quality of eggplant seedlings. Pesquisa Agropecuária Brasileira, 50, 932-938.
Pinheiro, M. G., Souza, C. A., Carneiro Junior, J. F. C., Silva, E. R. & Kandler, R. (2018). Prohexadione-Calcium and nitrogen topdressing fertilisation on productive performance of maize with late sowing. International Journal of Plant & Soil Science, 25, 1-10.
Pricinotto, L. F., Zucareli, C., Fonseca, I. C. B., Oliveira, M. A., Ferreira, A. S. & Spolaor, L. T. (2015). Trinexapac-ethyl in the vegetative and reproductive performance of corn. African Journal of Agricultural Research, 10, 1735-1742.
Rademacher, W. (2015). Plant growth regulators: backgrounds and uses in plant production. Journal of Plant Growth Regulation, 34, 845–872.
Souza, C. A., Figueiredo, B. P., Coelho, C. M. M., Casa, R. T. & Sangoi, L. (2013). Plant architecture and productivity of soybean affected by plant growth retardants. Bioscience Journal, 29, 634-643.
Spitzer, T., Mísa, P., Bílovský, J. & Kazda, J. (2015). Management of maize stand height using growth refulators. Plant Protection Science, 51, 223-230.
Stefen, D. L. V., Souza, C. A., Coelho, C. M. M., Tormen, M. E., Zanesco, P. R., Casa, R. T., Sangoi, L. & Nunes, F. R. (2014). Nitrogen management associated with growth retardants in wheat cv. Mirante. Revista de Ciências Agroveterinárias, 13, 30-39.
Tollenaar, M. (1992). Is low plant density a stress in maize? Maydica, 37, 305-311.
Trevizan, K., Gregoleti, E. & Hoffmann, A. F. (2015). Trinexapac-ethyl decreases lodging and increases productivity of wheat cultivar TbioPioneiro. Revista de Agronomia e Medicina Veterinária IDEAU, 2, 1-11 (Br).
Vian, L. A., Bredemeier, C., Silva, P. R. F., Santi, A. L., Giordano, C. P. D. & Santos, F. L. (2018). Critical limits of ndvi for yield potential estimation in maize. Revista Brasileira de Milho e Sorgo, 17, 91-100.
Villar, L., Brighenti, A. F., Cipriano, R. & Silva, A. L. (2011). Prohexadione-calcium and vigor reduction, productivity and quality of granod’oro grapevines. Revista Brasileira de Fruticultura, 33, 536-540.
Zagonel, J. & Ferreira, C. (2013). Rates and times of growth regulator application on corn hybrids. Planta Daninha, 31, 395-402.
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