Naslov
Phosphorus use efficiency in maize breeding

Autori
Šimić, Domagoj ; Kovačević, Vlado ; Rastija, Mirta ; Lončarić, Zdenko ; Jambrović, Antun

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Zbornik radova. 41. hrvatski i 1. međunarodni znanstveni simpozij agronoma / Jovanovac, Sonja ; Kovačević, Vlado - Osijek : Poljoprivredni fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2006, 227-228

Skup
41. hrvatski i 1. međunarodni znanstveni simpozij agronoma

Mjesto i datum
Opatija, Hrvatska, 13.02.2006. - 17.02.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
maize ; grain yield ; P deficient soil ; P use efficiency

Sažetak
Due to large area of phosphorus (P) deficient soils worldwide, breeding for P use efficiency becomes of commercial interest in maize. In this study, results from experiments grown in Croatia in 2003 and 2004 were presented in order to examine P efficiency in two well-known Os hybrids as well as in their respective parents and four crossing generations. The two- year trial was planted at two locations (Zelčin and Gundinci) differing markedly in P concentrations in soil. The results showed that patterns in differences of P efficiency over the years varied across generations: all four parents (respective R1 and R2) in both hybrids had the smallest differences compared to other generations. Two parents varied markedly for mean P efficiency in OSSK596. The parent R1 had P efficiency greater than 100% in both years, showing that this BSSS inbred line had consistently higher grain yield on P-deficient soil. Generally, no heterosis was expressed in this hybrid. On contrary, two inbred parents in OSSK 602 had similar P-efficiencies. There was heterosis for P efficiency in this hybrid in 2004, but further work is required to clarify this occurrence.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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