89 research outputs found
Streamlining collection of training samples for object detection and classification in video
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VELIÄINA, STRUKTURA I DRUÅ TVENO-EKONOMSKA OPRAVDANOST ULAGANJA U POLJOPRIVREDU LIKE I ISTRE
DRUÅ TVENO-EKONOMSKE MJERE POTICANJA BRŽEG RAZVOJA POLJOPRIVREDNE PROIZVODNJE U BRDSKO-PLANINSKOM PODRUÄJU SR HRVATSKE
Oil content in fruits of leading autochthonous olive varieties in Istria
Sadržaj ulja u plodu masline najvažniji je Äimbenik koji odreÄuje ekonomsku vrijednost pojedine sorte i jedan od kriterija za odreÄivanje stupnja zrelosti ploda, odnosno karakterizaciju sorte. OdreÄena je koliÄina ulja u plodu vodeÄih autohtonih sorti maslina u Istri, tijekom 2004. i 2005. godine, pomoÄu Soxtec aparata. Dobiveni podaci u zasebnim godinama upuÄuju na povezanost sadržaja ulja sa sortom, no njihova varijabilnost izmeÄu dvije godine za pojedinu sortu ukazuje na znaÄajan utjecaj vanjskih Äimbenika. Dobiveni rezultati variraju izmeÄu 21 i 48% ulja u odnosu na suhu tvar ploda, Å”to ukazuje na znaÄajan ekonomski potencijal ovih sorti.The oil content in an olive fruit is the most relevant factor determining the economic value of singular variety and one of the criteria for fruit maturity degree determination, and variety characterization as well. In this paper, the olive oil content in fruits of leading autochthonous olive varieties in Istria during crop seasons 2004 and 2005, using Soxtec apparatus, was determined. The results obtained reflect mostly the influence of the variety genetic potential on the oil content, when monitored in a single year, but its variation between the two years in a single variety shows the influence of external factors. The oil content on a dry weight basis in fruits of investigated varieties ranged from 21% to 48% which shows their high economic potential
CORRELATIONS AMONG AGRONOMIC TRAITS IN FAOSYNFR1B MAIZE POPULATION
Poznavanje korelacija izmeÄu razliÄitih svojstava kod kukuruza može biti od velike pomoÄi oplemenjivaÄu u izboru najuÄinkovitijeg selekcijskog postupka. Cilj ovog rada bio je istražiti korelaciju izmeÄu razliÄitih agronomskih svojstava tijekom drugog ciklusa rekurentne selekcije u FAOSYNFR1B populaciji kukuruza. U 1995. godini provedeni su selekcijski pokusi koji su ukljuÄivali 167 S1 potomstava, kao i 167 njima pripadajuÄih test-križanaca s inbred linijom BcA632N. Pokusi su postavljeni prema shemi 13x13 nepotpunog bloka na tri lokacije. Ukupno gledano pronaÄeno je viÅ”e signifikantnih korelacija izmeÄu prouÄavanih svojstava u pokusima sa S1 potomstvima nego u pokusima s test-križancima. VeÄina korelacija kretala se u rasponu od vrlo slabe (r= 0.15*) do osrednje (r= 0.49**). Jedine dvije korelacije koje su u svim pokusima bile jake do potpune bile su korelacija izmeÄu metliÄanja i svilanja (r= 0.85** do r= 0.96**), te korelacija izmeÄu visine biljke i visine do klipa (r= 0.72** do r= 0.81**). Korelacija za trulež stabljike izmeÄu S1 potomstava i test-križanaca kretala se u rasponu od slabe (r= 0.34**) do osrednje (r= 0.40**). Za prinos zrna niti na jednoj lokaciji nije pronaÄena signifikantna korelacija izmeÄu S1 potomstava i test-križanaca. Ukupno je pronaÄen manji broj signifikantnih korelacija izmeÄu razliÄitih lokacija za isto svojstvo kod test-križanaca nego kod S1 potomstava. Stoga se može zakljuÄiti da su rezultati S1 potomstava manje varirali s okolinom u usporedbi s test-križancima, Å”to je omoguÄilo bolju procjenu vrijednosti kod S1 potomstava nego kod test-križanaca za svojstva na koja se vrÅ”ila selekcija.Information on correlations among different traits in maize could help plant breeders to choose the most suitable selection procedure. The aim of this study was to estimate the correlation among different agronomic traits during the second cycle of recurrent selection in FAOSYNFR1B maize population. In 1995 the selection trials with 167 S1 progenies as well as with their 167 corresponding testcrosses with inbred line BcA632N were set up as 13x13 incomplete block design at three locations. On average, more significant correlations among studied traits were found in the trials including S1 progenies than in those including testcrosses. Most correlations ranged from very weak (r= 0.15*) to intermediate (r= 0.49**). The highest correlations at all locations for both S1 progenies and testcrosses were between pollen shed and silking (r= 0.85** to r= 0.96**), and between ear and plant height (r= 0.72** to r= 0.81**). The correlation for stalk rot between S1 progenies and testcrosses ranged from weak (r= 0.34**) to intermediate (r= 0.40**). The correlations between S1 progenies and testcrosses for grain yield were not significant at all locations. Generally, less significant correlations among different locations for the same trait were found in testcrosses than in S1 progenies. Thus it can be concluded that the traits in S1 progenies varied to the lower extent with the environment compared to the testcrosses. This allowed a better estimate of S1 progeny performances than testcross performances for traits under selection
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