Differences in yield determining processes of groundnut (Arachis hypogaea L.) genotypes in varied drought environments

Greenberg, D C and Williams, J H and Ndunguru, B J (1992) Differences in yield determining processes of groundnut (Arachis hypogaea L.) genotypes in varied drought environments. Annals of Applied Biology, 120 (3). pp. 557-566. ISSN 1744-7348

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Abstract

Thirty-six groundnut gentoypes of varied origin were evaluated for their yield, crop growth rates (C), and partitioning to reproductive sinks (p) in three trials. In the trials irrigation and sowing date were used to vary the amount of water available either throughout the crops' life, or through the grain filling phase. Genotype performance across the five environments for these attributes showed that although differences in C existed, differences in the stability of the partitioning were the dominant attribute of genotypes adapted to the drought prone Sahelian region. Data suggested that these differences were more attributable to tolerance to temperature and/or humidity than water stress. Over all treatments canopy temperatures relative to air (CATD) were strongly correlated with the C observed, but not so with yield; and differences between genotypes in the relationship between C and CATD were not statistically significant.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Arachis hypogaea; groundnut; genotypes; yield determination; crop growth rate; partitioning; drought tolerance
Subjects:	Mandate crops > Groundnut
Depositing User:	Mr Charan Sai Ch
Date Deposited:	24 Oct 2011 11:00
Last Modified:	14 Sep 2013 12:05
URI:	http://oar.icrisat.org/id/eprint/2909
Official URL:	http://dx.doi.org/10.1111/j.1744-7348.1992.tb04915...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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