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Journal of Agricultural Sciences (Belgrade)
2017, vol. 62, br. 2, str. 115-131
jezik rada: engleski
vrsta rada: izvorni naučni članak
objavljeno: 04/08/2017
doi: 10.2298/JAS1702115A
Creative Commons License 4.0
Genetička divergentnost genotipova nigerijskog i indijskog bisernog prosa zasnovana na agronomskim i morfološkim osobinama
aDepartment of Plant Biology, Faculty of Life Sciences, University of Ilorin, Kwara State, Nigeria + C. G. Bhakta Institute of Biotechnology, Uka Tarsadia University, Bardoli, Gujarat, India
bDepartment of Plant Biology, Faculty of Life Sciences, University of Ilorin, Kwara State, Nigeria

e-adresa: animasaun.ad@unilorin.edu.ng

Sažetak

Ovim istraživanjem ocenjivana je genetička divergentnost genotipova bisernog prosa uzgajanih u Nigeriji i Indiji na osnovu morfo-agronomskih osobina kako bi se identifikovali genotipovi sa superiornim svojstvima koji bi se mogli iskoristiti u programima za oplemenjivanje. Dvadeset četiri genotipa bisernog prosa uzgajano je i evaluirano u pogledu agronomskih i morfoloških osobina tokom suve i vlažne sezone 2015-2016. godine. Podaci prikupljeni o genotipovima korišćenjem standardnih deskriptora statistički su analizirani. IP22281 je imao najvišu srednju visinu biljke (108,90 cm), dok je kod NGB00531 zabeležena najniža (61,02 cm). Značajna varijacija u okviru vrste postojala je kod broja listova po biljci, dužini lista, širini lista, broju nodija i dužini internodija, međutim, obim stabljike je bio sličan za ove genotipove. Bokorenje je generalno bilo slabo sa najvišom vrednošću (1,60 bokora po biljci) uočenom kod NGB00531. Značajna pozitivna korelacija javila se između visine biljke, broja listova, dužine lista i širine lista. Metlice su se pojavljivale između 44. i 56. dana i NGB00548 je imao najkraće vreme sazrevanja. Dužina metlice i prečnik cvetne drške varirali su značajno među genotipovima. Najveći prinos zrna i masa 1000 zrna zabeleženi su kod NGB00616, dok su najniži prinos i masa zabeleženi kod IP22269. Analizom glavnih komponenti genotipovi su grupisani u četiri klastera, obuhvatajući nigerijske i indijske genotipove. Pored toga, dendrogramom su genotipovi grupisani u dve glavne grupe, koje su dalje podeljene u manje klastere sa genotipovima iz Nigerije i Indije u istom klasteru. Istraživanjem se zaključuje da bi varijacije u morfo-agronomskim osobinama i osobinama prinosa među proučavanim genotipovima mogle biti iskorišćene za poboljšanje useva. Obrazac grupisanja ovih genotipova u klastere ukazao je na njihovu genetičku povezanost, moguće od istog pretka, ali i na odvojenost mehanizmima geografske ili ekološke izolacije.

Ključne reči

genetička divergentnost; prinos zrna i komponente prinosa; morfološka varijacija; biserno proso

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