Proceedings: Plant Sciences

, Volume 89, Issue 5, pp 331–345 | Cite as

Morphological and anatomical astudies of the floral gall ofPongamia glabra Vent. Fabaceae (= Papilionaceae)

  • E Govindarajalu
  • T A Lourdusamy


The morphological and anatomical studies of the floral galls ofPongamia glabra reveal the involvement of the entire floral primordia, telescoping of the internodes of the peduncle resulting in the agglomeration of galls, morphogenetic phenomena of hypertrophy, hyperplasia, dediffsrentiation and redifferentiation, lack of polarity of certain cells and tissues as shown by the concentric, plicate and reticulate types of arrangement of vessels of the reaction xylem, development of irrigating strands and sclerosed cells towards the larval cavities and formation of crystals and tanniniferous idioblasts. The nutritive tissue around the larval cavity is rich in starch grains. The short vessels of the normal and reaction xyla with simple porous perforations and minute alternate lateral wall pittings indicate an advanced level of specialisation of secondary xylem, despite the modifications of the flowers due to galling.


Pongamia glabra floral gall morphology anatomy Papilionaceae 


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Copyright information

© Indian Academy of Sciences 1980

Authors and Affiliations

  • E Govindarajalu
    • 1
  • T A Lourdusamy
    • 1
    • 2
  1. 1.Department of BotanyPresidency CollegeMadrasIndia
  2. 2.Department of BotanyLoyola CollegeMadrasIndia

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