Zbornik - Društvo genetičara Srbije

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112 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Usm-23 Subotica, 30. novembar - 4. decembar 2004. KORELACIONA POVEZANOST PRINOSA I KVALITETA PLODA BRESKVE SA NEKIM FENOLOŠKIHIM FAZAMA Vera Rakonjac Poljoprivredni fakultet, Beograd-Zemun Vreme sazrevanja sorti breskve koje se gaje u našoj zemlji protee se gotovo na èetiri meseca. I pored toga, jedan od vanih ciljeva u oplemenjivanju ove vrste voæaka je stvaranje sorti veoma ranog ili veoma kasnog vremena sazrevanja. Dosadašnje iskustvo pokazalo je da se sorte breskve ekstremne po vremenu sazrevanja odlikuju slabijim kvalitetom plodova. Upravo stoga, cilj ovog rada je bio da se utvrde relacije i priroda zavisnosti vremena cvetanja ili vremena sazrevanja s jedne strane i prinosa, komponenti prinosa (broj zametnutih i broj ubranih plodova, masa ploda i masa koštice) i hemijskog sastava plodova (sadraj ukupnih i rastvorljivih suvih materija, sadraj ukupnih invertnih i redukujuæih šeæera i sadraj ukupnih kiselina) s druge strane. Kao materijal korišæeno je 20 sorti breskve razlièitog vremena sazrevanja. Povezanost osobina utvrðena je na osnovu vrednosti koeficijenata genetièke i fenotipske korelacije. Koeficijenti genetièke i fenotipske korelacije izraèunatu su na osnovu rezultata analize kovarianse, gde su godine uzete kao ponavljanje. Ustanovljeno je da je vreme cvetanja bilo pozitivno i veoma znaèajno genetièki i fenotipski korelisano sa brojem zametnutih plodova (rg=0.90**; rf=0.75**) i brojem ubranih plodova (rg=0.87**; rf=0.67**). Postojanje znaèajnih genetièkih i fenotipskih korelacija izmeðu vremena sazrevanja i mase ploda (rg=0.66**; rf=0.60**), vremena sazrevanja i sadraja ukupnih suvih materija (rg=0.75**; rf=0.59**), vremena sazrevanja i sadraja rastvorljivih suvih materija (rg=0.89**; rf=0.56**) predstavlja teškoæu u stvaranju sorti breskve ranog vremena zrenja sa poboljšanim kvalitetom ploda. CORRELATIVE RELATION OF YIELD AND FRUIT QUALITY WITH SOME PHENOLOGICAL PHASES IN PEACH Ripening time of peach cultivars that are grown up in our country is extended over a time period of almost four months. In addition to that, one of more important objectives of the peach breeding is creation of the cultivars having either very early or very late ripening time. Our so far experience is that the peach cultivars which ripening time is in the extremes is of lower fruit quality. The aim of this study, therefore, was to determine relationship and the nature of the dependence between flowering time or ripening time from one side and yield, yield components (initial and final fruit set, fruit weight and stone weight) and chemical composition of fruit (content of total dry matter, content of soluble solids, content of total, invert and reduced sugar and content of total acid) on the other side. Twenty peach cultivars each having a different ripening time were using as material. The relationship between characteristics was determined on the basis of values of genetic and phenotypic correlation coefficients. Genetic and phenotypic coefficients of correlation were calculated based on the results of analysis of covariance where the years considered as replications. It was confirmed that flowering time was positive genetic and phenotypic correlated with initial fruit set (rg=0.90**; rf=0.75**), and with final fruit set (rg=0.87**; rf=0.67**). The existence of significant genetic and phenotypic correlation between ripening time and fruit weight (rg=0.66**; rf=0.60**), between ripening time and dry matter content (rg=0.75**; rf=0.59**) and between ripening time and soluble solid content (rg=0.89**; rf=0.56**) represented difficulty in creation of new peach cultivars of early ripening time and improved fruit quality.
IV-Usm-24 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 113 Subotica, 30. novembar - 4. decembar 2004. REZULTATI ÈETRNAESTOGODIŠNJEG PROVENIJENIÈNOG TESTA SMRÈE U SRBIJI V. Ivetiæ, V. Isajev i M. Šijaèiæ-Nikoliæ Šumarski fakultet, Beograd Rad predstavlja kontiniutet analiza svojstava osam odabranih provenijencija smrèe (Picea abies /L./ Karst.). Test je osnovan od tri provenijencije ove vrste iz Slovenije – Mašun, Menina i Jelovica; i pet provenijencija iz <strong>Srbije</strong> – Golija, Zlatar, Èemerno, Radoèelo i Kopaonik. Monokulture kod Ivanjice, osnovane su sadnjom èetvorogodišnjih sadnica na tri lokaliteta, nadmorske visine od 600, 1100 i 1600 m. Istraivanja koja su u njima sprovodena imala su za cilj prouèavanje diferencijalnih svojstava i varijabilnosti smrèe u delu njenog prirodnog rasprostranjenja na jugoistoku Evrope, upoznavanje proizvodnih sposobnosti i razlika izmeðu pojedinih provenijencija u manje-više istim i razlièitim ekološkim uslovima u Srbiji. Ovim radom obuhvaæeno je više morfometrijskih svojstava juvenilnih biljaka, za svaku godinu starosti, od 7. do 14. godine. Merene su visine i visinski prirast na godišnjem nivou, preènici i prirast preènika biljaka u korenovom vratu i broj grana. Primenom standardnih statistièkih metoda, dobijeni rezultati metrièkih svojstava su analizirani. Obavljena komaprativna istraivanja sa osam provenijencija, pokazala su da se provenijencije Golija i Zlatar odlikuju izraenom adaptabilnošæu i dinamikom rasta, te bi ih u buduæim aktivnostima na osnivanju kultura ili pri pošumljavanju goleti trebalo više koristiti. RESULTS OF FOURTHEEN YEARS OLD NORWAY SPRUCE PROVENENCE TEST IN SERBIA This study is the continued analyses of eight selected spruce (Picea abies /L./ Karst.) provenances. The test consists of three provenances of this species from Slovenia – Mašun, Menina and Jelovica; and five provenances from Serbia – Golija, Zlatar, Èemerno, Radoèelo and Kopaonik. The monocultures near Ivanjica were established by planting four-year old seedlings at three localities, at the altitudes of 600, 1100 and 1600 m. The aim of the research was to identify the spruce differential characters and variability in the part of its natural range in the south-east Europe, to study the production capacity and the differences between individual provenances in more or less identical and different ecological conditions in Serbia. This study includes several morphometric characters of juvenile plants for 14 years of age. The measured characters are height and height increment, root collar diameter and diameter increment. The study results of metric properties were analysed by standard statistical methods.
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DRUŠTVO GENETIČARA SRBIJE SERBIAN
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III KONGRES GENETIÈARA SRBIJE Subo
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Uvodno predavanje Opening lecture
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ZAVRŠNO PREDAVANJE CLOSING LECTURE
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A Aksentijeviæ I. 194 Aleksiæ J.
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Zbornik - Društvo genetičara Srbije

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