NEW DATA ON THE BIOLOGY OF THE RED SPOTTED BUG (Spilostethus [=Lygaeus] equestris L., Het., Lygaeidae) CAUSING THE ACHENE GREENING IN CONFECTIONERY SUNFLOWER HYBRIDS
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| 024 | 7 | 0 | |a 10.2298/hel0441181h |2 doi |
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| 245 | 0 | 0 | |a NEW DATA ON THE BIOLOGY OF THE RED SPOTTED BUG (Spilostethus [=Lygaeus] equestris L., Het., Lygaeidae) CAUSING THE ACHENE GREENING IN CONFECTIONERY SUNFLOWER HYBRIDS |h [Elektronische Daten] |c UNOS DATOS A LA BIOLOGÍA DE LA CHINCHE DE CAMPO (Spilostethus [ Lygaeus ] equestris L., FAMILIA Lygaeidae, ORDEN Heterópteros), CAUSANTE DEL VERDEAMIENTO DEL AQUENIO DE HÍBRIDOS DE GIRASOL COMESTIBLE / QUELQUES DONNEES A LA BIOLOGIE DE LA PUNAISE DE COULEUR ROUGE ET NOIR (Spilostethus [ Lygaeus ] equestris, FAMILLE Lygaeidae, ORDRE Heteropteres) PROVOQUANT LE VERDISSAGE DE L'AKENE DES HYBRIDES DE TOURNESOL ALIMENTAIRE / [Zoltán Horváth, Attila Hatvani, Dragan Škorić] |
| 520 | 3 | |a Western European and especially German-based multinational food processing companies tend to grow confectionery sunflower hybrids and varieties in Hungary. This commercial product is highly preferred as substitute for walnuts, as filling in chocolate, bread and other bakery products, or as seasoning. In the early 1990s, German companies rejected several truckloads of confectionery sunflower due to "greening of the kernel in the achene”. Almost 90% of the rejected consignments originated from a sandy terrace in the region between the rivers Danube and Tisza, which at the time was severely infected with the Asclepias syriaca L. Field investigations revealed unambiguously that the greening of the kernel in the achene had been caused by the red spotted bug (Spilostethus [=Lygaeus] equestris L.). This species is able to cause extensive damage and discontinuity in the so-called shoulder part of the achene with its powerful stinging-suctorial mouth organ. Intensive chlorophyll synthesis begins in the damaged area due to the solar effect, which is undoubtedly the cause for the greening of the kernel in the achene. In this investigation, we studied confectionery sunflower fields in two neighboring areas (Bácsalmás and Katymár) for extent of damage caused by Spilostethus [=Lygaeus] equestris L. While in Bácsalmás (that district less infected with the Asclepias syriaca L.) we found a damage of decreasing intensity (8.85 damaged achenes per sunflower disc) as advancing towards the centre of the field, this value was almost three times as high, reaching 31.71 of damaged achenes per disc, in the area of Katymár (the area severely infested with Asclepias syriaca L.). Though the numbers are not very high in themselves - assuming that a well-developed disc contains 1100 to 1200 seeds - the damage may result in significant reduction of kernel quality. Our extensive research into the causes of the greening of the sunflower kernels made it clear that Spilostethus [=Lygaeus] equestris L. had a significant influence on the chemical composition of the damaged achenes: it increased the proportion of linoleic acid (C-18:2) by about 2.5%. That affects the lasting quality of the achene unfavorably (Horváth and Bujáki, 1991). For this reason, a comprehensive study of the biology of Spilostethus[=Lygaeus] equestris L. was undertaken in order to develop effective protection methods. This study was a pioneer investigation of exogenous and endogenous factors that might obstruct the use of confectionery sunflower hybrids and varieties in food industry. | |
| 540 | |a This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. | ||
| 690 | 7 | |a confectionery sunflower |2 nationallicence | |
| 690 | 7 | |a Spilostethus [=Lygaeus] equestris L |2 nationallicence | |
| 690 | 7 | |a Asclepias syriaca |2 nationallicence | |
| 690 | 7 | |a Vincetoxicum officinale |2 nationallicence | |
| 690 | 7 | |a cucumber mosaic virus |2 nationallicence | |
| 700 | 1 | |a Horváth |D Zoltán |u Faculty of Horticulture, College of Kecskemét, Kecskemét H-6000 Erdei F. tér 1-3. Hungary |4 aut | |
| 700 | 1 | |a Hatvani |D Attila |u Faculty of Horticulture, College of Kecskemét, Kecskemét H-6000 Erdei F. tér 1-3. Hungary |4 aut | |
| 700 | 1 | |a Škorić |D Dragan |u Institute of Field and Vegetable Crops, Oilcrops Department, M. Gorkog 30, 21000 Novi Sad, Serbia and Montenegro |4 aut | |
| 773 | 0 | |t HELIA |d De Gruyter |g 27/41(2004-12-01), 181-188 |x 1018-1806 |q 27:41<181 |1 2004 |2 27 |o helia | |
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| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Horváth |D Zoltán |u Faculty of Horticulture, College of Kecskemét, Kecskemét H-6000 Erdei F. tér 1-3. Hungary |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hatvani |D Attila |u Faculty of Horticulture, College of Kecskemét, Kecskemét H-6000 Erdei F. tér 1-3. Hungary |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Škorić |D Dragan |u Institute of Field and Vegetable Crops, Oilcrops Department, M. Gorkog 30, 21000 Novi Sad, Serbia and Montenegro |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t HELIA |d De Gruyter |g 27/41(2004-12-01), 181-188 |x 1018-1806 |q 27:41<181 |1 2004 |2 27 |o helia | ||
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