Vol. 9 (4) : July-August 2018 issue
Green Farming Vol. 9 (4) : 710-712 ; July-August, 2018
Evaluation of mesta (Hibiscus sabdariffa L.) germplasm against foot and stem rot caused by Phytophthora parasitica var. sabdariffa
SWATHI B.1*, Y. RAJASEKHAR2, N. HARI SATYANNARAYANA3, J. JAGANNADHAM4 and P. AMARAJYOTHI5
Agricultural Research Station, Amadalavalasa (ANGRAU), Srikakulam - 532 185 (Andhra Pradesh)
Designation : 1,2,3,4,5Scientist *(swathib2004@gmail.com)
Subject : Plant Pathology, Nematology and Virology, Mushroom Cultivation
Paper No. : P-7296
Total Pages : 3
Received : 05 June 2018
Revised accepted : 16 July 2018
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Citation :
SWATHI B., Y. RAJASEKHAR, N. HARI SATYANNARAYANA, J. JAGANNADHAM and P. AMARAJYOTHI. 2018. Evaluation of mesta (Hibiscus sabdariffa L.) germplasm against foot and stem rot caused by Phytophthora parasitica var. sabdariffa. Green Farming Vol. 9 (4) : 710-712 ; July-August, 2018
ABSTRACT
During kharif 2014-15, 2015-16 and 2016-17, fourty three germplasm lines of mesta were screened against foot and stem rot (Phytophthora parasitica var. sabdariffa) at Agricultural Research Station, Amadalavalasa under natural epiphytotic conditions for three consecutive years as a rainfed crop. Out of 43 germplasm accessions, seven lines i.e., AS-80-9, AS-80-12, AS-80-19, AS-81-12, REX-6, R-77 and R-88 were found moderately susceptible (MS) with a disease incidence range of 13.1% - 25.9%. Rest of all showed highly susceptible reaction (HS). The disease incidence was highest at 120 days age of crop stage and before harvest of the crop. Highest disease incidence was noticed in AMV-5, 51.2% (check variety).
Key words :
Epiphytotic condition, Germplasm, Phytophthora parasitica, Susceptible reaction.
