Estimation of genetic parameters of Plukenetia volubilis L. seed germination
Abstract
Plukenetia volubilis L. is a species that needs improvement to make commercial exploitation feasible, especially with regard to the seed quality. For this purpose, populations with rapid and uniform germination, followed by prompt seedling emergence are highly desirable for seedling production. The objectives were to study and estimate genetic parameters in germination and emergence tests of P. volubilis seedlings and describe the type of seed germination. Two experiments were carried out in the nursery in two seasons: in the Amazonian winter (December 2011 - January 2012) and summer (July-August 2012), evaluating 25 progenies per experiment, in a completely randomized design. The studied traits were: seedling emergence from seedling emergence from substrate (E), first emergence count (IE), emergence speed index (ESI), stem diameter (StD), hypocotyl length (HL) and shoot length (SL). Individual and combined variance analysis and the Scott Knott test were performed and genetic parameters estimated. The seedlings emerged between 19-41 days and 25-42 days in the Amazonian winter and summer, respectively. Estimates of broad-sense heritability in the analysis ranged from 9.980 (E) to 26.880 (IE). The germination of P. volubilis is classified as phanerocotylar-epigeal. Significant genetic variability for the traits E, GSI, SL, StD and HL was stated in the mother plants, indicating the possibility of selecting progenies with better seed and seedling quality.
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References
ABREU, D. C. A.; NOGUEIRA, A. C.; MEDEIROS, A. C. S. Efeito do substrato e da temperatura na germinação de sementes de cataia (Drimys brasiliensis miers. winteraceae). Revista Brasileira de Sementes, v. 27, n. 1, p. 149-157, 2005.
ALEXANDRE, R. S.; WAGNER JÚNIOR, A.; NEGREIROS, J. R. S.; PARIZZOTTO, A.; BRUCKNER, H. B. Germinação de sementes de genótipos de maracujazeiro. Pesquisa Agropecuária Brasileira, v. 39, n.12, p. 1239-1245, 2004.
AÑEZ, L. M.; COELHO, M. F. B.; ALBUQUERQUE, M. C. F.; DOMBROSKI, J. L. D. Caracterização morfológica dos frutos, das sementes e do desenvolvimento das plântulas de Jatropha elliptica Müll. Arg. (Euphorbiaceae). Revista Brasileira de Botânica, v. 28, n. 3, p. 563-568, 2005.
CARVALHO, N. M.; NAKAGAWA. J. Sementes: ciência, tecnologia e produção. Jaboticabal: FUNEP, 2012, 590 p.
COIMBRA, R. A.; NAKAGAWA, J. Época de semeio, produção e qualidade fisiológica de sementes de milheto. Revista Brasileira de Sementes, v. 28, n. 2, p. 53-59, 2006.
CRUZ, C. D.; CARNEIRO, P. C. S. Modelos biométricos aplicados ao melhoramento genético. Viçosa: UFV, 2006, 585p.
CRUZ, C. D. Programa GENES: estatística experimental e matrizes. Viçosa: UFV, 2006, 285p.
DUKE, J. A. Keys for the identificacion of seedlings of some preeminent wood species in eight forest types in Puerto Rico. Annals of the Missouri Botanical Garden, v. 52, p. 314-350, 1965.
FERRÃO, R. G.; CRUZ, C. D.; FERREIRA, A.; CECON, P. R.; FERRÃO, M. A. G.; FONSECA, A. F. A.; CARNEIRO, P. C. S.; SILVA, M. F. Parâmetros genéticos em café conilon. Pesquisa Agropecuária Brasileira, v. 43, n. 1, p. 61-69, 2008.
GILLESPIE, L. J. A synopsis of Neotropical Plukenetia (Euphorbiaceae) including two new species. Systematic Botany, v. 18, n.4, p. 575-592, 1993.
HAMAKER, B.; VALLES, C.; GILMAN, R.; HARDMEIER, R. M.; CLARK, D.; GARCIA, H. H.; GONZALES, A. E.; KOHLSTAD, I.; CASTRO, M.; VALDIVIA, R. Amino acid and fatty acid profiles of the inca peanut (Plukenetia volubilis). Cereal Chemic, v. 69, p. 461-463, 1992.
LYRA, D. H.; AMEIDA, L. A. H.; BRASILEIRO, B. P.; SANT’ANA, M. R.; AMARAL, C. L. F. Parâmetros genéticos de frutos, sementes e plântulas de Jatropha ribifolia (Pohl) Baill. (Euphorbiaceae). Revista Brasileira Plantas Medicinais, v. 14, n. 4, p. 579-585, 2012.
MAGUIRE, J. D. Speed of germination: aid in selection and evaluation for seedling emergence and vigour. Crop Science, v. 2, n. 2, p. 176-177, 1962.
MUNIZ, H. J. T. Colecionando frutas: 100 espécies de frutas nativas e exóticas. São Paulo: ARTE & CIÊNCIA, 2008, 352p.
NUNES, C. F.; SANTOS, D. N.; PASQUAL, M.; VALENTE, T. C. T. Morfologia externa de frutos, sementes e plântulas de pinhão-manso. Pesquisa Agropecuária Brasileira, v. 44, n. 2, p. 207-210, 2009.
RAMOS, S. L. F.; MACÊDO, J. L. V. DE; MARTINS, C. C.; LOPES, R.; LOPES, M. T. G. Tratamentos pré-germinativos e procedência de sementes do tucumã-do-amazonas para a produção de mudas. Revista Brasileira Fruticultura, v. 33, n. 1, p. 962-969, 2011.
SANTI, G. M.; FURTADO, C. M.; MENEZES, R. S. A.; KEPPELER. E. C. Variabilidad espacial de parámetros e indicadores de calidad del agua en subcuenca hidrográfica del Igarapé São Francisco, Rio Branco, Acre, Brasil. Ecología Aplicada, v. 11, n. 1, p. 23-31, 2012.
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