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Titolo:
EFFECTS OF SINGLE OR DOUBLE INFECTIONS WITH HELMINTHOSPORIUM-AVENAE AND BARLEY YELLOW DWARF VIRUS ON YIELD COMPONENTS OF OATS
Autore:
SOMMERFELD ML; GILDOW FE; FRANK JA;
Indirizzi:
PENN STATE UNIV,DEPT PLANT PATHOL UNIV PK PA 16802 PENN STATE UNIV,DEPT PLANT PATHOL UNIV PK PA 16802
Titolo Testata:
Plant disease
fascicolo: 7, volume: 77, anno: 1993,
pagine: 741 - 744
SICI:
0191-2917(1993)77:7<741:EOSODI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CARBOHYDRATE-COMPOSITION; SMALL GRAINS; WHEAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
M.L. Sommerfeld et al., "EFFECTS OF SINGLE OR DOUBLE INFECTIONS WITH HELMINTHOSPORIUM-AVENAE AND BARLEY YELLOW DWARF VIRUS ON YIELD COMPONENTS OF OATS", Plant disease, 77(7), 1993, pp. 741-744

Abstract

Field experiments were conducted over 2 yr near State College, PA, tostudy the effects on yield components of spring oats (cultivar Noble)of single and dual infections with Pyrenophora avenae (Helminthosporium avenae) and barley yellow dwarf virus (BYDV) (PAV-NY isolate). Oatswere inoculated with BYDV 4 or 6 wk after planting and with H. avenae6 or 8 wk after planting. Although the average percentage of leaf area covered with Helminthosporium leaf blotch lesions approached 14% at growth stage 11.1 and rose to 30-50% after stage 11.2, infection with H. avenae had no significant effect on any yield component in either year. BYDV infection reduced the number of tillers and panicles by 15%,the number of seeds per panicle by 18%, thousand-kernel weight by 5%,and total yield by 33% compared to control plants. Interactions between date of inoculation and BYDV infection were significant for seeds per panicle and total yield. Earlier inoculations were associated with larger reductions in yield. No H. avenae-by-BYDV interactions occurred.

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Documento generato il 21/09/20 alle ore 02:01:14