Importance Of Plant Colour And Modifier Genes InGrain Mould Resistance In Sorghum

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Date
1995
Authors
Esele, J.P.
Frederiksen, R.A.
Miller, F.R.
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Abstract
Three sorghum inbred cultivars, Sureno, RTx2536 and BTx3197, were used to determine the relationship between plant and grain colour, and 36 grain mould resistance in sorghum. They were used as a base population to generate PI , P2 and BCI populations at College Station, Texas, USA. The populations and their parents were evaluated for grain mould resistance at College Station, Texas, in 1990, and at Namulonge and Serere Research Stations, Uganda, in 1991. Grain mould evaluation was carried out under field conditions following artificial inoculation of panicles at 50% anthesis. Tan plant colour (ppqq) was found to confer grain mould resistance. The intensifier gene (I), which is a modifier for the major grain colour genes Rand Y, also was found to confer grain mould resistance. Considerably higher levels of resistance were obtained when both tan plant and grain colour modifier genes were present in combination (ppqql).
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East African Agricultural And Forestry Journal, XXXIX (No 1), pp. 61-71
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