Correlation between Morpho-anatomical Characters of Centella asiatica L. to Diverse Habitat Conditions of Assam (India)

Different morpho-anatomical characters of Celltella asiatica in response to diverse habitat conditions of Assam have been reported. The climate of Assam is generally of sub-tropical type influenced by northeast monsoon, with neither too cold in the Wintel-nor too hot in summer. Assam's soils have been classified into the following three types-red loamy, lateritic and alluvial. Site Santipur, Gauhati University campus, Barpeta and Mangaldoi are made up of alluvial soil cover, whereas Sivasagar is capped by red loamy soil. Results showed significant correlation among morpho-anatomical characters of C. asiatica with soil nutrients concentration. Magnesium concentration was positively correlated with flower size. High p^H levels increase the leaf size by releasing important ions like potassium. Negative relationship was obtained between soil phosphorous concentration and flower size. Calcium concentration increased inflorescence size. Soil nutrients also affect some anatomical features of C. asiatica. High soil nitrogen concentration showed thinner epidermal layers and high soH calcium increased the thickness of hypodermal layers.