National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The development of Heterodera avenae was studied on four resistant cultivars (BH 393, BH959, RD 2035 and DWRB 91) and one susceptible cultivar (BH902). After 20 days of germination inoculation was done with second stage juveniles @ 250 J2 / pot. Plants of each cultivar were uprooted at 15 days interval after the inoculation and observations were taken till adults were formed. Roots of uprooted plants were stained with 0.1% acid fuchs in lactophenol and observations on the development stages were taken by mounting the nematode dissected out of root in lactophenol. Penetration of the J2 of H. avenae was occurred insusceptible as well as in resistant cultivars but penetration was more in susceptible cultivars than resistant cultivars. In all the varieties, almost all the J2 could reach the fourth stage. Infected roots exhibited only slight swelling at the site of infection. H. avenae completed life cycle from J2 to female in 75 days on all varieties except, on RD 2035. Maximum number of cysts and cyst content was found in susceptible variety than resistant varieties but on RD 2035 no cysts were formed.
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