Browsing by Author "Anandavally Amma, P"

Filter results by typing the first few letters
Now showing 1 - 5 of 5
  • No Thumbnail Available
    Item
    Changes in free amino acids content of groundnut hypocotyl tissue infected with Sclerotium Rolfsii Sacc
    (Kerala Agricultural University, 1977) Anandavally Amma, P; Shanmugam, N; Chandrasekharan Nair, M
  • No Thumbnail Available
    Item
    Effect of hydrolytic enzymes in the pathogenesis of sclerotial root rot of peanut
    (Kerala Agricultural University, 1975) Anandavally Amma, P; Shanmugam, N; Chandrasekharan Nair, M
    An isolate of Sclerotium rolfsii Sacc. from peanut was found to produce the enzymes endopolygalacturonase (endo-PG) and cellulase (Cxi both in culture as well as in the inoculated peanut hypocotyl tissues. Endo-PG secretion was more during the early stages of growth and pathogenesis. On the other hand high cellulase activity was recorded during advanced stages of pathogenesis and in old cultures. These enzymes were also secreted with cell wall material isolated from the hypocotyl tissues as sole carbon source. The results are discussed as proof of the role of these enzymes in the sclerotial root rot disease of peanuts.
  • No Thumbnail Available
    Item
    Permeability changes associated with the sclerotial root rot of groundnut
    (Kerala Agricultural University, 1977) Anandavally Amma, P; Shanmugam, N; Chandrasekharan Nair, M
    Infection of groundnut hypocotyl tissue by Sclerothun rolfsii was found to alter the permeability of host tissue resulting in leaching out of large quantities of water soluble constituents. The culture filtrate of this orgainsm was found to alter cell permeability. The possibility of the enzymes secreted by the impairing pathogen in the host cell permeability is discussed.
  • No Thumbnail Available
    Item
    Respiratory and enzymatic changes in the sclerotial root rot of groundnut
    (Kerala Agricultural University, 1977) Anandavally Amma, P; Shanmugam, N; Chandrasekharan Nair, M
    Infection of groundnut hypocotyl region by Schrotium rolfsii was found to augment the respiratory rate of the host tissue. The respiratory rate reached the maximum during the symptom development stage and at this stage the activity of all the important terminal oxidative enzymes were also found to be enhanced. The results are discussed as proof of the role of increased oxidative enzyme activity in enhancing the respiratory rate of infected groundnut plants.
  • No Thumbnail Available
    Item
    Salt tolerance of certain varieties of paddy
    (Kerala Agricultural University, Vellanikara, 1968) Subramoney, N; Anandavally Amma, P