NECESIDADES TERMICAS PARA LA FLORACION DE SORGO EN LA CIENEGA DE CHAPALA

José Ariel Ruiz-Corral; Leonardo Soltero-Díaz

doi:10.35196/rfm.1993.1.79

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Published: May 24, 2024

DOI: https://doi.org/10.35196/rfm.1993.1.79

Keywords:

Sorghum bicolor L. Moench, Agrometeorology, Phenology, Base temperature, Thermal requirements, Jalisco

José Ariel Ruiz-Corral

INIF AP researcher. Agrometeorology Program. CIPAC-JAL. Field Exp. Center alisk. Postal Box 6-558. CP 44660 Guadalajara, Jal.

Leonardo Soltero-Díaz

INIFAP researcher. Sorghum Program. CIPAC-JAL. Aux. Exp. Field Ocotlan. Postal Box No. 79. CP 47800 Ocotlán, Jal.

Abstract

Th base temperature (Tb) and thermal requirements (RT) were determined for the period sowing-anthesis of nine grain sorghum (Sorghum bicolor L. Moench) lines adapted to the Chapala region, Jalisco, México. The procedure was based on a linear regression analysis between the mean temperature (T) and the days to anthesis (t), expressed as development rate (1/t), using data collected in 11 planting-dates field experiments carried out between 1984 and 1987. The results showed a Tb and RT of 12.7°C and 672 growing degree days (GDD) for the line R 5A; 13.7°C and 598 GDD for ATX-378; 14.7°C and 515 GDD for E 15A; 15.7°C and 395 GDD for ATX-623; 11.7°C and 674 GDD for B 106A; 13.1 oc and 650 GDD for R 27 A; 15.2°C and 482 GDD for B 198A; 14.6°C and 529 GDD for RTX-430, and 12.9°C and 639 GDD for 3-252. These data are pretended to be used to improve the prediction of days to flower of these lines in hybrid seed production programs.

Issue

Vol. 16 No. 1 (1993)

Section

Scientific Articles

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