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Título : Divergent mass selection for different flowering times in a Spanish synthetic maize population [Short communication]
Autor : Ruiz de Galarreta, José Ignacio; Álvarez Rodríguez, Ángel
Palabras clave : Earliness
Genetic gain
Zea mays L.
Fecha de publicación : 2008
Editor: Instituto Nacional de Investigaciones Agrarias (España)
Citación : Spanish Journal of Agricultural Research 6(1): 56-60 (2008)
Resumen: Eight cycles of divergent mass selection for flowering time were performed in the synthetic maize (Zea mays L.) population Lazcano (EZS9, from Guipuzcoa, Spain). A trial with a randomised block design plus three replicates was then performed at two locations in northeastern Spain, and over two years, to compare flowering time in the original population and the material produced in the eight selection cycles. Linear regression coefficients were determined to estimate the average rate of selection response per cycle. Genetic gains with respect to the vegetative cycle and other major agronomic traits were obtained. Direct selection responses were significant and grain yield maintained. No negative correlated responses were obtained for any agronomic trait. Divergent mass selection for early flowering was therefore found to be efficient in this synthetic population
Descripción : The definitive version is available at http://www.inia.es/sjar
URI : http://hdl.handle.net/10261/3582
ISSN: 1695-971-X
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