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Early selection of elite plants in Asparagus

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dc.creator COINTRY ENRIQUE LUIS
dc.creator LÓPEZ ANIDO FERNANDO SEBASTIÁN
dc.creator GATTI ILEANA
dc.creator CRAVERO VANINA PAMELA
dc.creator FIRPO INÉS TERESA
dc.creator GARCÍA STELLA MARIS
dc.date 2000
dc.date.accessioned 2013-05-29T21:49:38Z
dc.date.available 2013-05-29T21:49:38Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052000000100005
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=00068705&date=2000&volume=59&issue=1&spage=21
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/2167
dc.description In order to establish an efficient selection criterion the variability in three asparagus populations was evaluated defining the most important yield components and analysing its evolution along three growing seasons. The yield components, coefficient of variation (CV) and the proportion of plants contributing to 80% of the total yield were estimated. The elite plants were selected by mean of total yield and clusters techniques. Multiple regression showed that spear number (SN) and spear weight (SW) were the most important yield components. In every population, total yield (TY) and SN showed the highest values of CV, independently of sex. 69% of the plants contributed to the 80% of the total yield in the first year while in the second and third year the contribution was 57%. At the end of the third year, 17 plants were selected by the average of the total yield and 43 by clusters. It is suggested to select for SW in the first year, reducing in 68% the experimental material. In the second year, the selection for SN would reduce to 5% the plants to evaluate for total yield in the third year. In this way the selected plants are the same but the number of plants to evaluate is dramatically reduced along the years, therefore facilitating the breeders work.
dc.publisher Instituto Agronômico de Campinas
dc.source Bragantia
dc.subject asparagus
dc.subject variability
dc.subject elite plants
dc.subject selection
dc.subject plant breeding
dc.title Early selection of elite plants in Asparagus


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