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Variability and early selection on the seedling stage for agronomic traits in progenies from olive crosses
Author(s) -
León L.,
Rallo L.,
Rio C.,
Martin L. M.
Publication year - 2004
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.0179-9541.2003.00920.x
Subject(s) - flesh , biology , germplasm , cultivar , horticulture , seedling , dry weight , ripening , agronomy , yield (engineering) , heritability , botany , genetics , materials science , metallurgy
Yield per tree, ripening date and oil content components (fruit fresh weight, flesh moisture, flesh/stone ratio both on fresh and dry weight basis, flesh and fruit oil content on dry weight basis) have been studied during 3 years in seedlings from crosses among the olive cultivars ‘Arbequina’, ‘Frantoio’ and ‘Picual’. Genetic and environmental variances and year‐to‐year consistency of data were estimated. Most of the traits evaluated showed a range of variability as large or even larger than either the range observed in a random sample of cultivars from the World Olive Germplasm Bank of Cordoba or the range reported in the evaluation of olive cultivars collections. Between‐years correlation coefficients showed that for a character such as oil content the values obtained in the first year could be reliable indicators of the values obtained in following years. Observations over 2 years may be required for characters such as fruit weight or flesh/stone ratio on a fresh weight basis and even more than 2 years may be required to estimate yield per tree.