%0 Conference Paper %A Seetharama, N %A Flower, D J %A Jayachandran, R %A Krishna, K R %A Peacock, J M %A Singh, S %A Soman, P %A Rani, A U %A Wani, S P %B Proceedings of the International Congress of Plant Phlsiology %C New Delhi, India %D 1990 %F icrisat:3649 %P 215-220 %T Assessment of Genotypic Differences in Sorghum Root Characteristics %U http://oar.icrisat.org/3649/ %X Representative data on genotypic differences in sorghum root characteristics are examined for prospective use in applied breeding programmes. Significant genotype differences in root characteristics observed are: root-length density at lower depths when the crop 15 grown on stored. soil moisture. root-shoot ratios early establishment of nodal Roots In seedlings, and microbial associations of roots. Four-fold genotypic differences root-shoot ratio were found at the seedling stage, but high ontogenic shifts negated these differences at later stages. Hence . sorghum breeding for efficient root systems should be confined to well- defined target environments with specific objectives.