Sixteen sugarcane clones  including two checks were planted with three replications in RBD at Paddy Block, RAU Pusa Farm, Samastipur, Bihar during 2012-13 under low land area where its grand growth phase coincides with water-stagnation depth 40-45 cm for three months to study the genetic divergence in sugarcane under  Water-Logging condition and identification of tolerant Clones. Observations were recorded for the traits viz, Germination Percentage at 45 days, Number of Shoots at 120 days, Plant Height at 150, 240 and 360 days, Cane diameter, NMC, Single Cane weight, Red Rot Score, Brix at 10, 11 and 12 month, Pol at 10, 11 and 12 month, Purity at 10, 11 and 12 month, CCS Per cent at harvest and Cane yield. Highly significant variation was observed for all traits except purity at 10 and 11 month stage and CCS percent at harvest. All the sixteen genotypes taken for genetic divergence analysis differed significantly with regard to the characters studied and displayed marked divergence and grouped into five clusters following Tocher’s method, Cluster II had eight genotypes viz. CoP 02061, BO146, CoP 04181, BO141, BO91(C), BO147(C), BO154 and CoP 09437 followed by Cluster I  and having number of varieties (5) viz. CoP 11436, BO155, BO153, CoLk 94184 and CoP 09436,while Cluster III, Cluster IV and Cluster V were monogenotypic, comprising single clone CoSe 96436, CoP 08436 and CoX 07067 respectively. The maximum inter cluster distance was observed between cluster IV and V followed by cluster III and V, cluster I and V and cluster II and IV. The highest contribution in the manifestation of genetic divergence was exhibited by cane yield (52.50) followed by CCS per cent at harvest (20.83), pol at 11 month stage (9.17), brix at 12 month stage (5.00), plant height at 360 days (5.00), number of millable canes (4.17), pol at 12 month stage (2.50). of the best performing clones   viz. BO154, CoP 092, CoP 02061, CoX 07067 and BO155 were identified  as water-logging tolerant genotypes coupled with high to moderate sucrose, CCS (t/ha) and acceptable morphological appearance of plant at the time of harvest.  Identification of above said clones among the genetically diverse genotypes under water-logging condition will be utilized as a water-logging tolerant clone for farmers as well as it can be utilized as a parent in sugarcane crossing   programme. It is suggested that genotypes with high index for specific characters that fall into different clusters could be intercrossed to generate good number of sugarcane progenies having greater potentiality for breeding purpose by virtue of their desirable characters.

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