Morphological and Molecular Variability of Podosphaera pannosa Causing Rose Powdery Mildew in Himachal Pradesh, India

2017 ◽  
Vol 70 (4) ◽  
Author(s):  
Vijay Kumar ◽  
Sunita Chandel
Keyword(s):  
Powdery Mildew ◽  
Himachal Pradesh ◽  
Molecular Variability

Effect of weather parameters on powdery mildew development of wheat at different location in Himachal Pradesh

2018 ◽  
Vol 71 (3) ◽  
pp. 349-353 ◽  
Author(s):  
Amritpal Mehta ◽  
Ashwani Kumar Basandrai ◽  
D. K. Banyal ◽  
Daisy Basandrai
Keyword(s):  
Powdery Mildew ◽  
Himachal Pradesh ◽  
Weather Parameters

Microscopy studies of powdery mildew on summer squash

1991 ◽  
Vol 49 ◽  
pp. 520-521
Author(s):  
John S. Gardner ◽  
W. M. Hess
Keyword(s):  
Powdery Mildew ◽  
Tip Growth ◽  
Hyphal Growth ◽  
Plant Tissues ◽  
Vegetative Hypha ◽  
Powdery Mildews ◽  
Summer Squash ◽  
Conidial Formation ◽  
Polar Tip Growth ◽  
Short Conidiophore

Powdery mildews are characterized by the appearance of spots or patches of a white to grayish, powdery, mildewy growth on plant tissues, entire leaves or other organs. Ervsiphe cichoracearum, the powdery mildew of cucurbits is among the most serious parasites, and the most common. The conidia are formed similar to the process described for Ervsiphe graminis by Cole and Samson. Theconidial chains mature basipetally from a short, conidiophore mother-cell at the base of the fertile hypha which arises holoblastically from the conidiophore. During early development it probably elongates by polar-tip growth like a vegetative hypha. A septum forms just above the conidiophore apex. Additional septa develop in acropetal succession. However, the conidia of E. cichoracearum are more doliform than condia from E. graminis. The purpose of these investigations was to use scanning electron microscopy (SEM) to demonstrate the nature of hyphal growth and conidial formation of E. cichoracearum on field-grown squash leaves.

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