NOTE-Estimate of cross efficiency of potato parents

• Main Authors: Roberto Fritsche Neto, Velci Queiroz de Souza, Arione da Silva Pereira, Giovani Olegário da Silva, Sandra Müller Garcia
• Format: Article
• Language: English
• Published: Brazilian Society of Plant Breeding 2006-01-01
• Series: Crop Breeding and Applied Biotechnology
• Subjects: Solanum tuberosum L.; hybridization; true seed.
• Online Access: http://www.sbmp.org.br/cbab/siscbab/uploads/bd6ba09c-542d-baaa.pdf

The objective of this study was to estimate the cross efficiency of 43 genotypes frequently used as parents in thepotato breeding program of Embrapa Clima Temperado. The study was conducted under greenhouse conditions in theseasons autumn and winter/spring, from 2000 to 2004, in Pelotas, RS, Brazil. For each cross, the number of pollinated flowerbuds, the fruit-set and the number of seeds were recorded. Each season, in which the genotype was crossed, was considereda replication. The data were analyzed using the REML/BLUE statistic model. Male parents adapted to the ecological conditionsof the southern regions of Brazil presented higher efficiency in crosses than female parents. Genotypes used as male parentsinfluenced the number of seeds per flower bud more than female parents.