BIVARIATNA ANALIZA GENETSKE RAZNOLIKOSTI MED AKCESIJAMI AFRIŠKEGA GOMOLJASTEGA FIŽOLA (Sphenostylis stenocarpa (Hochst. ex A. Rich.) Harms)

Solomon Tayo AKINYOSOYE, Johnson Adedayo ADETUMBI, Oluwafemi Daniel AMUSA, Adeola AGBELEYE, Folake ANJORIN, Mercy Oluremi OLOWOLAFE, Taiwo OMODELE

Povzetek


Variabilnost je zelo pomemben dejavnik v žlahtnenjenju poljščin. Dvoletna raziskava je bila opravljena s ciljem ovrednotenja genetske variabilnosti in analize odnosov med komponentami pridelka semena ter tvorbe in značilnosti gomoljev med 12 akcesijami afriškega gomoljastega fižola. Zbrani podatki so bili obdelani z analizo variance (ANOVA), analizo glavnih komponent (PCA), hierarhično in klastersko analizo. Izsledki so pokazali, da so imele interakcije med genotipi in leti (G × Y) statistično značilen vpliv na nekatere analizirane spremenljivke kot so dnevi do prvega cvetenja, dnevi do 50 % cvetenja, število strokov na rastlino, dolžina stroka ter pridelek semen in gomoljev na rastlino. Prvih pet glavnih component (PC) z lastnimi vrednostmi več kot 1.0 je prispevalo 66.70 % celokupne variabilnosti, PC1 in PC 2 pa sta pridali še 39.48 % variabilnosti v povezavi s pridelkom semena in gomoljev. Med genotipi so se jasno oblikovale tri heterotične skupine in akcesija AY03 je bila prepoznana po velikem pridelku semen, AY10 pa po velikem pridelku gomoljev. Neznačilno povezavo med pridelkom semen in gomoljev pri teh akcesijah bi bilo priporočljivo dodatno testirati glede prilagodljivosti na različne agroekološke razmere, možnosti njihovega izboljšanja in potencialne uporabe heterotičnega učinka.

Ključne besede


afriški gomoljasti fižol; morfološko-agronomske lastnosti; Pearsonova korelacija; analiza glavnih komponent

Celotno besedilo:

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DOI: http://dx.doi.org/10.14720/aas.2017.109.3.02

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