Genetic improvement of peanut in Argentina between 1948 and 2004 light interception, biomass production and radiation use efficiency

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An important milestone in Argentina peanut (Arachis hypogaea L.) breeding was the shift in the 1970sfrom cultivars with erect growth habit (CEGH) to cultivars with procumbent growth habit (CPGH). CPGHimproved seed yield but also lengthened growth cycle. However, there is no information if the change...

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Detalles Bibliográficos
Autor principal: Haro Juárez, Ricardo Javier
Otros Autores: Baldessari, Jorge, Otegui, María Elena
Formato: Artículo
Lenguaje:Inglés
Materias:
ARACHIS HYPOGAEA L.
GROWTH HABIT
LIGHT INTERCEPTION
BIOMASS PRODUCTION
RADIATION USE EFFICIENCY
HARVEST INDEX
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2017haro.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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022 |a 0378-4290 
024 |a 10.1016/j.fcr.2017.01.021 
040 |a AR-BaUFA 
100 1 |9 45010  |a Haro Juárez, Ricardo Javier  |u Instituto Nacional de Tecnología Agropecuaria (INTA).Centro Regional Córdoba. Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba, Argentina. 
245 0 0 |a Genetic improvement of peanut in Argentina between 1948 and 2004  |b light interception, biomass production and radiation use efficiency 
520 |a An important milestone in Argentina peanut (Arachis hypogaea L.) breeding was the shift in the 1970sfrom cultivars with erect growth habit (CEGH) to cultivars with procumbent growth habit (CPGH). CPGHimproved seed yield but also lengthened growth cycle. However, there is no information if the change ingrowth habit (GH) may have involved a phenotype with a canopy architecture that makes a differentialcapture and use of resources. Field experiments were performed to compute leaf are index (LAI), thefraction of incident photosynthetically active radiation intercepted by the crop (fIPAR), biomass produc-tion, radiation use efficiency (RUE) and harvest index (HI). Four cultivars of each GH, released between1948 and 2004, were evaluated. The LAI was always larger among CPGH than among CEGH. Only theformer reached the critical LAI. Likewise, fIPAR of CPGH was higher than that of CEGH throughout thecrop cycle Maximum fIPAR differed between GHs (P menor 0.001), with interannual mean values of 0.95 forCPGH and 0.77 for CEGH. Final total biomass of CPGH was 37% larger than that of CEGH. RUE valuesranged between 1.88 and 2.46 g MJ−1, and differed significantly (menor o igual 0.008) between GHs (CEGH menor to CPGH),Years (Year 1 mayor year 2) and GH × Year (CPGH Year 1mayor (CPGH Year 1 mayor CPGH Year 2 = CEGH Year 2 = CEGH Year 1). CPGHimproved pod yield (más 64%), seed yield (más101%), HI of pods (más 29) and HI of seeds (más 56%) respect to CEGH. Considering the effects of GH on the capacity of cultivars for achieving the critical LAI with current cropmanagement, future research should focus on alternative sowing patterns (e.g., reduced row spacingamong CEGH). 
653 |a ARACHIS HYPOGAEA L. 
653 |a GROWTH HABIT 
653 |a LIGHT INTERCEPTION 
653 |a BIOMASS PRODUCTION 
653 |a RADIATION USE EFFICIENCY 
653 |a HARVEST INDEX 
700 1 |9 67497  |a Baldessari, Jorge  |u Instituto Nacional de Tecnología Agropecuaria (INTA).Centro Regional Córdoba. Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba. Argentina. 
700 1 |9 5930  |a Otegui, María Elena  |u Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.  |u CONICET. Buenos Aires, Argentina.  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Buenos Aires Norte.Estación Experimental Agropecuaria Pergamino (EEA Pergamino). Provincia de Buenos Aires, Argentina.  
773 0 |t Field crops research  |w (AR-BaUFA)SECS000083  |g Vol.204 (2017), p.222–228, grafs., tbls. 
856 |f 2017haro  |i En Reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2017haro.pdf  |x ARTI201807 
856 |u http://www.elsevier.com  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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