Study of Rice (Oryza sativa L.) Root Anatomy under Aerobic and Waterlogged Conditions.
Publication Date : 12/05/2015
Rice has served as a prime model plant species for studies of constitutive root aerenchyma. In present investigation, 20 days old seedling root anatomy were studies ineight diverse and phenotypically contrastingricegenotypes.Studies were carried out in contrasting water regimes i.e. aerobic and water-logging situations.Higher number of aerenchyma formation wereobserved in water logging treatment compared to aerobic condition. Thus, development of aerenchyma in response to water logged condition would help supply O2 to root cells. Aerenchyma cells in aerobic roots ranged from 11 (BJ21) to 23 (Devamallige). However, under water logged condition, Higher numbers were observed ranging from 19 (Jeerigesanna) to 28 (BI33). Aerenchyma number showed highly significant positive correlation with pith area (r = 0.57) and negatively correlation with xylem numbers (r = -0.46) and phloem number (r = -0.46). On the other hand, cross section area radius positively correlated with pith area (r = 0.41) and xylem number (r = 0.70).
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