Otpornost različitih sorti pšenice na pšeničnog žiška (Sitophilus granarius L.)
| Autor: | Ana Matković, Željko Jukić, Anita Liška, Karmen Jukić |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Glasnik Zaštite Bilja Volume 43. Issue 5. |
| ISSN: | 2584-3265 0350-9664 |
| DOI: | 10.31727/gzb.43.5.4 |
| Popis: | Ciljevi ovog rada bili su utvrditi razlike u otpornosti različitih sorata pšenice na pšeničnog žiška i koliki su gubici od žižaka u masi zrna tijekom 20 tjedana skladištenja. Istraživanje je provedeno u laboratoriju Zavoda za specijalnu proizvodnju bilja Agronomskog fakulteta Sveučilišta u Zagrebu na 3 sorte pšenice: Divana, Renan i Sana. U staklenke (720 ml) stavljeno je 100 g zrna i 20 nasumično odabranih odraslih žižaka. Staklenke sa zrnom i žišcima bile su 20 tjedana smještene u laboratoriju pri prosječnoj temperatura zraka od 24,9°C i prosječnoj relativnoj vlazi zraka od 64,7%. Tijekom perioda skladištenja, uočen je rast populacije pšeničnog žiška kod sve tri sorte pšenice. Najveći broj žižaka zabilježen je kod sorte Sana, što čini povećanje početne populacije za 28 puta, dok je kod sorata Renan i Divana početna populacija povećana za 1,8, odnosno 1,6 puta. Nakon 20 tjedana skladištenja gubitak mase zrna iznosio 1,30% za sortu Renan, 1,70% za sortu Divana te 12,45% za sortu Sana. Žišci su se hranili i razmnožavali više na zrnima sorte Sana jer ima mekanije zrno od sorata Divana i Renan koje su tvrđeg zrna. Obzirom da su u ovom istraživanju promatrani samo neki čimbenici koji mogu utjecati na otpornost pšenice na žiške, potrebno je nastaviti istraživanja i pri tome uzeti i druge čimbenike u razmatranje kako bi se što bolje istražile razlike u otpornosti između sorata pšenice. The objectives of this study were to determine the differences in the resistance of some wheat cultivars to granary weevil (Sitophilus granarius L.) and grain weight loss during 20 weeks of storage caused by granary weevil. The research was carried out in the laboratory of Department of Field Crops, Forage and Grassland, Faculty of Agriculture, University of Zagreb, on three wheat cultivars: Divana, Renan and Sana. 20 randomly selected adult insects were placed in 720ml glass jars containing 100 g of whole seed of a particular cultivar. Glass jars were placed in the laboratory for 20 weeks. The mean temperature and relative humidity were 24,9°C and 64,7%. During storage period, weevil population growth was found in grains all three wheat cultivars. The highest number of weevils was observed in the seeds of Sana cultivar, which is an increase of the initial population by 28 times, while in the seeds of Renan and Divana cultivars the initial population increased by 1.8 and 1.6 times, respectively. After 20 weeks of storage, grain weight loss was 1.30% for Renan, 1.70% for Divana and 12.45% for Sana. The granary weevils are fed and propagated more on the grains of Sana cultivar because it has a softer grain than the Divana and Renan cultivars, which have harder grains. It is necessary to continue the research and take in consideration other factors to better explain differences in resistance of different wheat cultivars to granary weevil. |
| Databáze: | OpenAIRE |
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