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Significant genetic properties of maize inbred lines: A good basis for progress in breeding

Prestižna selekciona svojstva samooplodnih linija kukuruza - dobra osnova za progres u oplemenjivanju

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2010
323.pdf (636.3Kb)
Authors
Radenović, Čedomir
Filipović, Milomir
Stanković, Goran
Selaković, Dragojlo
Sečanski, Mile
Marković, Ksenija
Čamdžija, Zoran
Pavlov, Jovan
Article (Published version)
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Abstract
This study conforms the hypothesis that there are elite maize inbred lines and hybrids with erect top leaves, which have a dominant property of an efficient photosynthetic and fluorescent model, that is successfully used in modern breeding programmes and the production of hybrid seed and commercial maize. This statement is supported by the displayed results on the erect position of the top leaves, the dynamics of grain dry-down during the maturation period and photosynthetic and florescence parameters: the temperature dependence of the delayed chlorophyll fluorescence intensity, the Arrhenius criterion for the determination of critical temperatures (phase transition temperatures) and the activation energies. The presented results show that properties of observed maize inbreeds and their hybrids are based on the nature of conformational and functional changes that occur in their thylakoid membranes and other chemical structures of tissues of grain and intact leaves, as well as, on posit...ive effects in maize breeding.

U ovom radu potvrđuje se naša hipoteza da postoje elitne inbred linije kukuruza sa uspravnim položajem vršnih listova koje poseduju dominantno svojstvo efikasnog fotosintetično-fluorescentnog modela, te da se, kao takve, mogu uspešno koristiti u savremenim programima oplemenjivanja i proizvodnje hibridnog semena kukuruza. Ovoj konstataciji idu u prilog izloženi rezultati o uspravnom položaju vršnih listova prestižnih linija kukuruza, dinamici otpuštanja vode iz zrna u periodu sazrevanja i o fotosintetično-fluorescentnim pokazateljima: temperaturnoj zavisnosti intenziteta zakasnele fluorescencije hlorofila, Arenijusovom kriterijumu za određivanje kritičnih temperatura (temperature faznih prelaza) i o energiji aktivacije. Ukupno izloženi rezultati pokazuju da su svojstva prestižnih inbred linija kukuruza zasnovana na prirodi strukturnih i funkcionalnih promena, koje se odigravaju u njihovim tilakoidnim membranama i drugim hemijskim strukturama tkiva intaktnog lista i zrna, kao i na pozit...ivnim efektima u oplemenjivanju kukuruza.

Keywords:
linija / list / tilakoidna membrana / fotosintetično-fluorescentni model / zakasnela fluorescencija hlorofila
Source:
Journal of Scientific Agricultural Research, 2010, 71, 2, 43-61
Publisher:
  • Savez poljoprivrednih inženjera i tehničara, Beograd
Funding / projects:
  • Oplemenjivanje kukuruza specifičnih svojstava za industrijske potrebe (RS-20003)
  • Razvoj tehnologije gajenja kukuruza sa ekološkim pristupom (RS-20007)
  • Identifikacija izvora tolerantnosti prema suši u gen banci kukuruza (RS-20014)
  • Fizička hemija dinamičkih stanja i struktura neravnotežnih sistema - od monotone do oscilatorne evolucije i haosa (RS-142025)

ISSN: 0354-5695

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Handle
https://hdl.handle.net/21.15107/rcub_rik_325
URI
http://rik.mrizp.rs/handle/123456789/325
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