Artículos de revistas
Seed Controlled Deterioration Of Three Interspecific Elephant Grass × Pearl Millet Hybrids [deterioração Controlada De Sementes De Três Híbridos Interespecíficos De Capim-elefante × Milheto]
Registro en:
Revista Brasileira De Zootecnia. , v. 38, n. 3, p. 428 - 434, 2009.
15163598
2-s2.0-70149088344
Autor
Pozitano M.
Usberti R.
Institución
Resumen
In order to allow using seeds from three interspecific elephant grass × pearl millet hybrids (Original, Cutting and Grazing-types) to set pasture fields, it became necessary to analyze their performances in relation to storage conditions and controlled deterioration. Five moisture content levels and three storage temperatures (40, 50 and 65°C) have been tested for each hybrid. Seed sub samples for each moisture content and storage temperature combination were sealed in laminated aluminum foil packages and stored at those temperatures until complete survival curves have been obtained. The recurrent selection increased seed initial quality (Ki) for grazing-type population (lower and more tillered plants); however inverse results were observed for cutting-type population (higher and less tillered plants). Viability equation constants estimated for Cutting-type, Original and Grazing-type hybrids are: KE = 8.417, 7.735 and 8.285; Cw = 5.037, 4.658 and 4.522; CH = 0.02309, 0.01969 and 0.03655; CQ = 0.000436; 0.000403 and 0.000300, respectively. The viability equation constants for the hybrids are KE = 8.033; Cw = 4.662; CH = 0.02544; CQ = 0.000386. Through the equations, it is feasible to estimate the germination percentage of a seed lot after different storage conditions. © 2009 Sociedade Brasileira de Zootecnia. 38 3 428 434 Ellis, R.H., Kraak, H.L., Temperature and seed storage longevity (1990) Annals of Botany, 65, pp. 197-204 Ellis, R.H., Hong, T.D., Quantitative response of the longevity of seed of twelve crops to temperature and moisture in hermetic storage (2007) Seed Science and Technology, 35 (2), pp. 432-444 Ellis, R.H., Roberts, E.H., Improved equations for the prediction of seed longevity (1980) Annals of Botany, 45, pp. 13-30 Ellis, R.H., Hong, T.D., Roberts, E.H., A low moisture content limit to logarithmic relations between seed moisture content and longevity (1988) Annals of Botany, 61, pp. 405-408 Fantinatti, J.B., Usberti, R., Seed viability constants for Eucalyptus grandis (2007) Brazilian Journal of Agricultural Research, 42 (1), pp. 111-117 Harrington, J.F., Seed storage longevity (1972) Seed biology, 3, pp. 145-245. , Kozlowski, T.T. (Ed.). New York: Academic Press Hay, F.R., Mead, A., Manger, K., One-step analysis of seed storage data and the longevity of Arabidopsis thaliana seeds (2003) Journal of Experimental Botany, 54, pp. 993-1011 (2006) International rules for seed testing, p. 462. , International Seed Testing Association - ISTA. Zurich Pereira, A.V., Valle, C.B., Ferreira, R.P., Melhoramento de forrageiras tropicais (2001) Recursos genéticos e melhoramento de plantas. (Genetic resources and plant improvement), p. 1183. , Nass, L.L. Valois, A.C.C. Melo, I.S. (Eds.) Rondonópolis: Fundação Mato Grosso Reis, M.C., Souza Sobrinho, F., Ramalho, M.A.P., Allohexaploid pearl millet x elephantgrass population potential for a recurrent selection program (2008) Brazilian Journal of Agricultural Research, 43 (2), pp. 195-199 Schank, S.C., Diz, D.A., Hoghe, P.J., Evaluation of pearl millet x elephantgrass hybrids for use as high quality forage for livestock (1996) Soil and Crop Society of Florida Proceedings, 55, pp. 120-121 Souza Sobrinho, F., Pereira, A.V., Ledo, F.J.S., Agronomic evaluation of interespecific hybrids of elephant grass and pearlmillet (2005) Brazilian Journal of Agricultural Research, 40 (9), pp. 873-880 Usberti, R., Performance of tropical forage grass (Brachiaria brizantha) dormant seeds under controlled storage (2006) Seed Science and Technology, 35 (2), pp. 402-413 Usberti, R., Usberti JR, J.A., Aguiar, R.H., Effects of a recurrent selection scheme, applied to an interspecific hybrid Pennisetum purpureum Schum. (elephantgrass) x Pennisetum glaucum (L.) R. Br. Stuntz (pearl millet), on several seed quality parameters (2005) International Grassland Congress, p. 62. , 20., 2005, Dublin, Ireland. Proceedings... Dublin Usberti JR, J.A., Usberti, R., Alcantara, P.B., Yield and quality parameters of an interspecific hybrid Pennisetum purpureum Schum. (elephantgrass) x Pennisetum glaucum (L.) R. Br. Stuntz (pearl millet) (2005) International Grassland Congress, p. 96. , 20., 2005, Dublin, Ireland. Proceedings... Dublin