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Stay green kriterijum u oplemenjivačkim programima na kukuruzu
Naučni institut za ratarstvo i povrtarstvo, Novi Sad
Ključne reči: stay-green; korelacije; path analiza
Sažetak
Genetička varijabilnost za stay green je u oplemenjivanju kukuruza više korišćena u svetlu selekcionisanja visoko prinosnih nego tipičnih stay green genotipova. Stay green je indikator dobrog zdravstvenog stanja biljke u kasnijim fazama vegetacije, redukovanog progresivnog starenja, tolerantnosti prema stresnim uslovima izazvanim sušom i tolerantnosti prema poleganju biljaka, što obezbeđuje superiornost stay green genotipova u odnosu na one koji ne poseduju ovo svojstvo (non stay green). Cilj istraživanja bio je da se utvrde međusobni odnosi stay green-a i prinosa zrna sa nekoliko vegetativnih svojstava u dve sintetičke populacije kukuruza šire genetičke osnove. Najkonzistentnije korelacije sa stay green-om ustanovljene su za udeo vode u listu i stablu, što je potvrđeno path koeficijent analizom. Najniža genetička korelacija sa prinosom zrna ustanovljena je za stay green (r=-0.095), dok je path koeficijent analizom utvđen vrlo jak i visoko signifikantan direktan uticaj stay green-a na prinos zrna (p=0.834**).
Reference
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O članku

jezik rada: srpski
vrsta rada: naučni članak
objavljen u SCIndeksu: 02.06.2007.

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