Recurrent selection for resistance in maize to the African stalk borer,Busseola fusca (Fuller)

Autor:	J. Klopper, J. B.J. van Rensburg
Rok vydání:	2004
Předmět:	Germplasm Larva Busseola fusca Ecology biology Soil Science Plant Science medicine.disease_cause biology.organism_classification Inbred strain Agronomy Infestation medicine Inbreeding Selection (genetic algorithm) Hybrid
Zdroj:	South African Journal of Plant and Soil. 21:59-62
ISSN:	2167-034X 0257-1862
Popis:	Stem borer resistant inbred lines Mp704 and Mp706 of Mississippi origin were used as donor parents in a recurrent selection programme, to develop locally adapted germplasm with improved resistance to the stalk borer Busseola fusca. The segregating progenies of crosses between resistant and susceptible lines were planted ear-to-row, with selection based on the incidence of leaf feeding damage and stunting, following artificial infestation of plants with neonate larvae. Resistance derived from the two sources was combined after two cycles of selection, which resulted in high levels of resistance being achieved over a relatively short period. Combining ability for yield was evaluated at the S3 level of inbreeding, using 1137TN as tester. Compared with commercial hybrids, a number of test crosses were identified with superior yield under conditions of stalk borer infestation and comparative yields in the absence of attack. Characterization data were obtained on 42 lines intended for release.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7fe5a7a812d47f33aeea45241501b3f https://doi.org/10.1080/02571862.2004.10635023 Zobrazit plný text záznamu