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Integrated approach to improve drought tolerance in maize

Integrisan pristup u poboljšanju tolerantnosti kukuruza na sušu

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2012
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Authors
Anđelković, Violeta
Ignjatović-Micić, Dragana
Vančetović, Jelena
Babić, Milosav
Article (Published version)
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Abstract
Drought is one of the most serious a biotic factors limiting crop production worldwide. Prediction of climate change increases the need of better adaptation and breeding for improved drought tolerance in crops. Maize is one of the most sensitive crops to drought, despite of the fact that it is a C4 plant, with high photosynthetic rate and relatively low transpiration rate. In Serbia drought severely decreased maize grain yield, particularly in the last decade. A major task for breeders is to create drought tolerant maize that will successfully cope with negative consequences of global warming are facing scientists today. Enhancing the tolerance of maize has been elusive in terms of conventional plant breeding. Interdisciplinary approaches tried to understand and dissect the mechanism of drought tolerance, but with limited success. Modern genomics and genetics, together with advances in phenotyping and knowledge in physiology and breeding are expected to reveal genes and pathways that c...onfer drought tolerance.

Suša je jedan od najznačajnijih abiotičkih faktora koji ograničava biljnu proizvodnju širom sveta. Projekcije klimatskih promena povećavaju potrebu za boljom adaptacijom useva i oplemenjivanjem na poboljšanu tolerantnost prema suši. Kukuruz je jedan od najosetljivijih useva na sušu, uprkos činjenici da je C4 biljka, sa visokom brzinom fotosinteze i relativno niskom brzinom transpiracije. U Srbiji, suša značajno utiče na smanjenje prinos zrna kod kukuruza, posebno u poslednjoj deceniji. Zbog toga je glavni zadatak oplemenjivača stvaranje kukuruza tolerantnog na sušu koji će se uspešno nositi sa negativnim posledicama globalnog zagrevanja. Dalje poboljšanje tolerantnosti na sušu kod kukuruza je postalo vrlo ograničeno metodama konvencionalnog oplemenjivanja. Interdisciplinarnim pristupom se pokušava bolje proučiti i raščlaniti mehanizam tolerantnosti na sušu, ali je uspeh dosta limitiran. Od moderne genomike i genetike, zajedno sa dostignućima u fenotipskoj oceni, kao i saznanjima iz fiz...iologije i oplemenjivanja se očekuje da otkriju gene i procese koji su uključeni u tolerantnost na sušu.

Keywords:
climatic changes / heat stress / water stress / yield / Zea mays L. / klimatske promene / prinos / toplotni stres / vodni stres / Zea mays L.
Source:
Selekcija i semenarstvo, 2012, 18, 2, 1-18
Publisher:
  • Društvo selekcionara i semenara Republike Srbije, Beograd
Projects:
  • Improvment of maize and soybean traits by molecular and conventional breeding (RS-31068)

ISSN: 0354-5881

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URI
http://rik.mrizp.rs/handle/123456789/421
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  • Радови истраживача / Researchers' publications
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MRIZP

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