Journal ID : AMA-24-07-2022-11554
[This article belongs to Volume - 53, Issue - 08]
Total View : 376

Title : Cultural variability in isolates of Pyricularia oryzae causing rice blast disease in Jammu region

Abstract :

Rice blast (Pyricularia oryzae) is the most destructive disease of rice in Jammu & Kashmir. The variability status of P. oryzae was not studied in Jammu region, although many studies had been done in the Kashmir region, therefore the present study is first study which aimed at determining the cultural variability in the rice blast isolates of the Jammu region. In this research, leaf blast samples were collected from the rice growing areas of five districts of Jammu division and variability among 30 isolates of Pyricularia oryzae was studied with respect to cultural traits. The colony colour of thirty isolates collected during the survey were off white to greyish black, with circular or irregular margins and flattened to raised growth pattern. On the basis of colony growth pattern, margin and colour, the isolates were categories into 6 groups (A, B, C, D, E and F). All thirty isolates exhibited excellent variability in respect of colony growth pattern, margins and colony colour.

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