Genotype and environmental effects on resistance to late leafspot in groundnut

Ntare, B R and Waliyar, F (1999) Genotype and environmental effects on resistance to late leafspot in groundnut. African Crop Science Journal, 7 (2). pp. 109-115. ISSN 1021-9730

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Abstract

In 1995 and 1996, 15 advanced breeding lines of groundnuts along with a local check were evaluated in a replicated trial for yield and reaction to late leafspot (Cercosporidium personatum [Mycosphaerella berkeleyi]) at Gaya in Niger and Bagauda in Nigeria. Variation among locations within years was significant for pod yield and late leafspot as well as among genotypes. The genotype×year interaction variance for late leafspot was one-fifth the magnitude of the genetic variance while genotype×location variance was larger that the genetic variance. The genotype×year×location variance was two-thirds the magnitude of the genetic variance. Broad-sense heritability was low for pod yield (46%), high for seed weight (84%) and shelling percentage (86%) and intermediate for late leafspot (53%). The results indicated the need to test breeding lines for resistance to late leafspot in more years and locations. High yielding late leafspot resistant lines were found

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Arachis Hypogaea, Cercosporidium, disease resistance,Breeding
Subjects:	Mandate crops > Groundnut
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	20 Oct 2011 11:23
Last Modified:	20 Oct 2011 11:24
URI:	http://oar.icrisat.org/id/eprint/3033
Official URL:	http://www.ajol.info/index.php/acsj/article/view/2...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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