Singh, B. and Dubey, S.C. (2005) Variability in Phytophthora drechsieri f.sp. cajani in response to host differentials and fungicides. Indian Phytopathology, 58 (1). pp. 57-62.
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Abstract
Seven differential hosts of pigeonpea distinguished population of P. drechsleri t.sp. cajani isolated from Delhi (PP-1), Bihar (PP-8), Uttar Pradesh (PP-2, 3, 4, 5 and 9 ) and Uttranchal (PP-6 and 7) into four variable groups as least aggressive (group-I; PP-1, 2 and 3), virulent (group-II; PP-4 and 5), moderately virulent (group-III; PP-6 and 7) and highly virulent (group-IV; PP-8 and 9). Individually, Pusa (Bihar) isolate PP-8 proved most virulent and isolate PP-2 from Ghaziabad (Uttar Pradesh) was least virulent. Variable sensitivity to apron 35 WS, rldornll MZ-72 WP and captafol 80 WP fungitoxicants among four selected isolates of P. drechsleri f.sp. cajani was noticed. Delhi isolate (PP-1) was tolerant to captafol with highest EC so (15.11 ,.,g a.i./ml) value whereas, Pantnagar isolate (PP-6) was highly sensitive with EC so (2.14 ,.,g a.i./ml). Kanpur isolate (PP-4) exhibited most tolerance to rldornll MZ-72 WP. In the case of apron 35 WS, Delhi isolate (PP-1) was most sensitive. Thus, the present studies showed the possibility of existence of four races of the pathogen in north India.
| Item Type: | Article |
|---|---|
| Additional Information: | Authors are thankful to the Head, division of Plant Pathology, IARI for providing the facilities and Dr. K.D. Srivastava, Principal Scientists, Plant Pathology, I.A.R.I.,New Delhi for help and critical suggestions. |
| Uncontrolled Keywords: | pigeonpea, fungicide |
| Author Affiliation: | Division of Plant Pathology, Indian Agricultural Institute, India |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Pigeonpea |
| Depositing User: | Mr Arbind Seth |
| Date Deposited: | 03 Jul 2013 05:04 |
| Last Modified: | 03 Jul 2013 05:04 |
| Official URL: | http://epubs.icar.org.in/ejournal/index.php/IPPJ/a... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10817 |
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