
%0 Journal Article
%A Wright, GC 
%A Smith, RCG 
%A McWilliam, JR 
%T Differences between two grain sorghum genotypes in adaptation to drought stress. I. Crop growth and yield responses
%J Australian Journal of Agricultural Research
%D 1983/12/01
%V 34
%N 6
%P 615-626
%K 
%R https://doi.org/10.1071/AR9830615
%U https://www.publish.csiro.au/paper/AR9830615 
%X A sorghum F1-hybrid, E57 , with reputed drought resistance was compared with another F1-hybrid, TX- 671, under irrigation and dryland conditions of severe rainfall insufficiency but ample soil water at depth in a deep cracking clay soil. Significant cultivar differences in grain yield occurred under rain-fed but not under irrigated conditions. Differences in yield were associated with different morphological responses to drought stress, with the variety E-57, in comparison with TX-671, having a lower level of floret abortion, the ability to maintain green leaf area longer during grain-filling and probably a higher root to shoot ratio. The implication of these results in relation to adaptation to drought stress is discussed. 
