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anale 8.pdf - Institutul National de Cercetare Dezvoltare pentru ...

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. FonOR COLAB.exclusă posibilitatea <strong>de</strong> a îrnbina producţia 111are <strong>de</strong> tuberculi cu conţinutulridicat <strong>de</strong> arnidon, dar necesită material iniţial testat şi volummai lnare <strong>de</strong> serl1linceri.VARIABILITY OF SOME CHARACTERS IN POTATO HYBRIDVEGETATIVE POPULATIONS AND THEIR SUITABILITY 1'0SELECTION UNDER DIFFERENT PEDOCLTIVIATIC CONDI'TIONSSUMMARYIn four loc.alities (Brnşov, Suceava, Cluj-Napoc.a, Ştegmeşti-Argeş) anel two years(1969-1970) nine hybrid vegetative populations were analyzed for phenotypicalvariability of tuber yielcl, tubel' number and starch content. The large variabilit,Ymay be due more ar less to the effect of environmental f(1ctors. The values of thecorrelation coefficients between years for each character (table 6) express a strongrepeatability in phenotipical terms, so that a pozitive effect of the selection isavailable. The tube.r yield is positively correlateel \vith the tuber number, but negatively(significant1y only one year) with the stareh content; no correlation isbetween the number of tubers and the stareh content (table 7). A good se1ectioninvolves different selection 1evels <strong>de</strong>pending on locality : a higher 1eve1 for tuberyi'eld and lower for starch content un<strong>de</strong>I' irrigation in Stefăne,,;;ti, a I'ather highleve1 but similar for number of tubers and starch content in Braşov and Suceava.DIE VARIABILITĂT EINIGER MERKMALE IN VEGETATIVENHYBHIDE POPULATIONEN BEI KARTOFFELN UND IHRE EIGNUNGFUR DIE SELEKTION UNTER UNTERSCHIEDLICHEN BODEN -UND KLIMABEDINGUNGENZUS:AMMENFASSUNGUnt.er elen pedoklimatischen Bedingungen aus Braşov,Suceava,'Cluj-Napoca l.lndŞtefăneşti/Argeş in <strong>de</strong>n Jahren 1969-1970 wur<strong>de</strong>n 9 vegetative Hybridpopl.llationenhinsichtlich <strong>de</strong>r Variabilităt <strong>de</strong>r phenotypisehen Al.lsprăgung <strong>de</strong>s KnollenertI1ages,<strong>de</strong>r Knollenzah1 l.lnd <strong>de</strong>s SUirke gehaltes, wie auch die Eignung fUr die Se~ektjondieser Merkmale untersucht. Es wurae eine grosse variabilităt festgestellt, welcheauf die AktJon <strong>de</strong>r genetischen FaktoreI). wie ,anch aui clie Umweltfaktoren zuruckzufilhf1enist, die grosser o<strong>de</strong>I' kleiner sincl, in Abhăngigkeit cler untersuchtenMerkma1en. Die ""Verte <strong>de</strong>r Kore1ations Koefizicntcn <strong>de</strong>r verschiedcnen Merkmalcnzwischen <strong>de</strong>n Jahrcn (Tabelle G), beweisen cine grosse Wicdcrholungsrnog1ichkeit<strong>de</strong>r phenotypischen Auspregung <strong>de</strong>r Merkmale und als in Folge <strong>de</strong>ssell1 einen positive:nEfekt <strong>de</strong>r Auslese.Der KnoHenertrag ist positiv koreliert mit <strong>de</strong>r Knollenzahl negativ mit <strong>de</strong>mStărkegehalt, <strong>de</strong>r nul' statistisch gesichert ist, o<strong>de</strong>r zwischen <strong>de</strong>r Knollenzahl und<strong>de</strong>rn Stărkcgehalt gibt es gal' kcine Korclation (Tabelle 7). Die Auslese fUr dic dreiMerkmale lffinn in a11en untersuchten Ortschaften durchgefUhrt wer<strong>de</strong>n, mit <strong>de</strong>rBedingung, dass die Se1ektionsgrenze unterschi~d1ich festgelegt wer<strong>de</strong>n: etwashoher fur <strong>de</strong>n Knollenertrag in Stefăneşti unter Bewăsserungsbedingl.lngen,undniedriger fiiI' <strong>de</strong>n Stărkeinhalt. Fur Braşov und Suceava konnen die gleichen Selektionsgrenzenfur die Knollenzahl und Stărkegehalt festgelegt wer<strong>de</strong>n.

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