GENETSKA RAZMERJA MED IZBRANIMI SORTAMI JEDILNEGA OSLEZA (Abelmoschus esculentus (L.) Moench) V NIGERIJI

Bashir O. Bello, D. AMINU

Povzetek


Raziskava je bila opravljena na izbranih sortah jedilnega osleza oz. okre (Abelmoschus esculentus (L.) Moench) na Teaching and Research Farm, University of Maiduguri, Nigeria. Namen je bil ovrednotiti raven genetske pestrosti in dednost osmih lastnosti sort osleza ob namakanju v sušnem obdobju 2015 in 2016. Rezultati so pokazali značilne razlike (p<0.01) pri desetih sortah v dolžini obdobja (številu dni) do cvetenja, višini rastlin, dolžini svežih plodov (‘strokov’), sveži masi plodov in v premeru svežih plodov v obeh vegetacijskih sezonah. Visoke vrednosti genotipskega koeficienta variabilnosti, dednosti in genetskega napredka, povezanega s selekcijo, so bile ugotovljene pri vseh preučevanih lastnostih, razen pri številu dni do cvetenja in premeru svežih plodov. To nakazuje veliko genetsko raznolikost in prevladovanje aditivnih učinkov pri genetski kontroli teh lastnosti, kar se lahko ugodno uporabi pri selekciji. Mahanalobisova D2 analiza je razdelila deset sort v štiri skupine (klastre). Največja skupina I je vsebovala 4 sorte, tej sledi skupina II s tremi sortami, nato skupina III z dvema sortama in mono-genotipska skupina IV. Tri najboljše sorte (Salkade, Y’ar gagure and Kwadag) glede na pridelek in z njim povezane lastnosti bi lahko bile uporabljene neposredno ali v križanjih z drugimi obetajočimi sortami v bodočih žlahtniteljskih programih.

Ključne besede


diverziteta; genetska prednost; dednost; jedilni oslez (okra); pridelek plodov

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2017.109.2.09

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