http://oar.icrisat.org/id/eprint/3033 2011-10-20T11:24:39Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/3033/ Genotype and environmental effects on resistance to late leafspot in groundnut Ntare, B R Waliyar, F Groundnut 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 African Crop Science Society 1999 Article PeerReviewed application/pdf en http://oar.icrisat.org/3033/1/Genotype_and_environmental_effects_on_resistance_to_late_leafspot_in_groundnut.pdf 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 http://www.ajol.info/index.php/acsj/article/view/27761 info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage