Differences in yield determining processes of groundnut (Arachis hypogaeaL.) genotypes in varied drought environments1
作者:
D. C. GREENBERG,
J. H. WILLIAMS,
B. J. NDUNGURU,
期刊:
Annals of Applied Biology
(WILEY Available online 1992)
卷期:
Volume 120,
issue 3
页码: 557-566
ISSN:0003-4746
年代: 1992
DOI:10.1111/j.1744-7348.1992.tb04915.x
出版商: Blackwell Publishing Ltd
关键词: Arachis hypogaea;groundnut;genotypes;yield determination;crop growth rate;partitioning;drought tolerance
数据来源: WILEY
摘要:
SummaryThirty‐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 significan
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