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Optimal allocation of resources in evaluating current sunflower inbred lines for resistance to Sclerotinia
Author(s) -
Degener J.,
Melchinger A. E.,
Hahn V.
Publication year - 1999
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1046/j.1439-0523.1999.118002157.x
Subject(s) - sclerotinia , biology , sunflower , helianthus annuus , germplasm , sclerotinia sclerotiorum , agronomy , inbred strain , helianthus , selection (genetic algorithm) , botany , genetics , gene , artificial intelligence , computer science
Sclerotinia sclerotiorum (Lib.) de Bary is a major limiting factor for sunflower ( Helianthus annuus ) production. This study was conducted to (1) evaluate a large number of current sunflower lines for their reaction to Sclerotinia , and (2) determine the optimum allocation of resources for their selection. A set of 85 inbred lines was screened under artificial leaf infection in three environments. The test revealed ample variation for all resistance traits in the current germplasm. A line selected from NDBLOS, an oilseed sunflower germplasm poo, and its derivatives were most resistant to Sclerotinia. Lines derived from interspecific crosses with the wild species Helianthus tuberosus and Helianthus argophyllus also showed satisfactory Sclerotinia resistance. The evaluation of five plants per plot in two replications and four environments appears to be a reasonable allocation of resources in order to optimize the selection response.