NDLI: Zum Vorkommen und zum Einfluß des barley yellow dwarf luteovirus (BYDV) auf Wachstum und Ertrag des Maises

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Zum Vorkommen und zum Einfluß des barley yellow dwarf luteovirus (BYDV) auf Wachstum und Ertrag des Maises

Content Provider	Semantic Scholar
Author	Grüntzig, Maria Fuchs, Egon Werner, M.
Copyright Year	2017
Abstract	Das barley yellow dwarf luteovirus (BYDV) tritt regelmasig - allerdings mit stark schwankender Infektionsrate - in den Maisbestanden Mitteldeutschlands auf. Lediglich im Sommer des Jahres 1996 zeigte ein Teil der naturlich infizierten Pflanzen Symptome in Form von Rotfarbung der Spitzen und Rander alterer Blatter. In Freilandversuchen, die in den Jahren 1994 und 1995 durchgefuhrt wurden, sollte der Einflus des BYDV (PAV-ahnliches Isolat) nach Inokulation mit Hilfe von Rhopalosiphum padi L. auf die Wuchshohe, die Einzelpflanzenmasse und die Kolbenmasse von zwei Maissorten ('Berka', 'Bezemara') uberpruft werden. Weder nach einer fruhen (Drei- bis Vierblattstadium) noch nach einer spaten Infektion (Funf- bis Sechsblattstadium) liesen sich im Vergleich zu den gesunden Kontrollpflanzen signifikante Verminderungen der genannten Ertragsparameter feststellen. Ebenso beobachteten wir in den bei den Versuchsjahren keine virustypische Symptomausbildung. Auf die grose Bedeutung des Maises im Rahmen der Epidemiologie des BYDV wird hingewiesen. Occurrence and influence of barley yellow dwarf luteovirus (BYDV) on growth and yield of maize The barley yellow dwarf luteovirus (BYDV) appears regularly in the maize crops of Central Germany, however, the percentage of infected plants varies extremely from year to year. Only in summer 1996 a portion of the naturally infected plants showed a red discoloration beginning at the tips and margins of older leaves. In field trials carried out in 1994 and 1995 the influence of BYDV on plant height, total plant weight and corn-cob weight of two maize varieties (cv. 'Berka', 'Bezemara') was to be investigated using a PAV-similar isolate. The inoculation was accomplished by means of Rhopalosiphum padi L. Significant reductions of the mentioned yield components compared to healthy plants were not recorded, neither after early infection (at the stage of 3 to 4 leaves) nor after late infection (at the stage of 5 to 6 leaves). In both experimental years virus-typical symptoms were not observed either. Finally, the great importance ofmaize in connection with the epidemiology of BYDV is underlined.
Starting Page	45
Ending Page	45
Page Count	1
File Format	PDF HTM / HTML
Volume Number	49
Alternate Webpage(s)	https://ojs.openagrar.de/index.php/NachrichtenblattDPD/article/download/7767/7184
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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