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 late blight disease caused by Phytophthora infestans, is a serious threat to potato cultivation worldwide. The varietal resistant is cheapest and environment friendly for management of this disease. A total of twenty two (two sets) advanced potato hybrids along with four control varieties namely Kufri Bahar, Kufri Garima, Kufri Shailja and Kufri Girdhari were evaluated during crop seasons (2012-15) for resistance against late blight. In set 1, based on field evaluation result revealed that advanced hybrid MS/9-723 showed highly resistant AUDPC (45.38), another hybrid MP/04-578 showed AUDPC (82.00) was resistant and 7 hybrids showed AUDPC (150-375) were moderately resistant and remaining two were susceptible (>375) against cv. Kufri Bahar (AUDPC-925.00) during 2012-14. In set 2, two advanced hybrids viz, MS/10-885 (75.46) and MP/07-214 (13.00) were highly resistant, MS/10-966 (77.31) was resistant and remaining 8 hybrids were moderately resistant during 2013-15 against cv. Kufri Bahar (AUDPC-749.34). In laboratory test, in set 1; five hybrids were moderately resistant and remaining were susceptible for foliar while three hybrids were moderately resistant and reaming were susceptible for tuber resistance. Similarly, in set 2, three hybrids were resistant, six were moderately resistant and two were susceptible foliar infection while two were resistant and remaining hybrids susceptible for tuber resistance. Foliage resistance, tested under laboratory condition using detached leaf test and field condition did not establish close relationship. The expression of late blight in foliage and tuber were not closely related.
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