Development of purple blotch incited by Alternaria porri and its losses in seed crop of onion (Allium cepa)

Indian Journal of Agricultural Sciences

Volumn 69, Issue 2, 1999, Pages 144-146

  Lakra, B S ^a  

^a Choudhary Charan Singh Hisar Agricultural University   (India)

Author keywords

A1ternaria porri; Conidia; Epidemic; Infection; Intensity; Purple blotch

Indexed keywords

ALLIUM CEPA; ALTERNARIA PORRI;

EID: 0033062455     PISSN: 00195022     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (9)

1. Angell H R. 1929. Purple blotch of onion (Macrosporium porri Ell.). Journal of Agricultural Research 38 : 467-87.
2. Chawda H T and Rajasab A H. 1994. Aerobiology of Alternaria porri and its relation to purple blotch disease in onion. Indian Journal of Mycology and Plant Pathology 24 (1) : 41-5.
3. Everts K L and Lacy M L. 1996. Factors influencing infection of onion leaves by Alternaria porri and subsequent lesion expansion. Plant Disease 80 (3) : 276-80.
4. Fahim M M. 1966. The effect of light and other factors on the sporulation of Alternaria porri. Transactions of the British Mycological Society 49 (1) : 73-8.
5. Khare U K and Neema' K G. 1984. Factors affecting development of purple blotch Alternaria porri on onion leaves. Indian Phytopathology 37 : 327-8.
6. Lakra B S. 1994. Effect of different categories of purple blotch infection on yield and yield components of seed crop of onion. Plant Disease Research 9 (2) : 230 (Abstr).
7. Meredith D S. 1966. Spore dispersal in Alternaria porri (Ellis) Neerg. on onion in Nebraska. Annals of Applied Biology 57 : 67-73.
8. Pandotra V R. 1965. Purple blotch disease of onion in Punjab. II. Studies on life history, viability and infectivity of the causal organism Alternaria porri. Proceedings of the Indian Academy of Sciences B 61 : 326-30.
9. Thind T S and Jhooty J S. 1982. Association of thrips with purple blotch infection on onion plants caused by Alternaria porri. Indian Phytopathology 35 : 696-8.