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P. SREELATHA, V. UMAMAHESH*, D. SUBRAMANYAM, N.V. SARALA, B. RAVINDRA REDDY
Department of Crop Physiology, S.V. Agricultural College, ANGRAU, Tirupati-517502, A.P
2003T121 is a promising pre released cultivar of sugarcane with a problem of sprouting when planted as bud chips as well as 3 budded setts. Bud chips from different portions of the cane (top, middle, bottom) were collected and subjected to pre plant soaking with different growth promoting chemicals viz., hydropriming for 24hours, GA3@ 100ppm for one hour and BAP@50ppm for one hour. The experiment was conducted in split plot design with four main treatments and three sub treatments. Each treatment was replicated thrice. Bud chips collected from the top and middle portion of the cane treated with BAP @50ppm recorded significantly higher percentage of bud sprouting (48.53,39.45), seedling vigour index (469.04,284.15), shoot length (cm) (11.28,7.87) and also the activity of acid invertase enzyme ( ì g invert sugars mg-1 protein) (70.37,76.40). Bud chips collected from the top one third portion of the cane treated with BAP proved to be effective in improving the seedling vigour index.
Sugarcane bud chips, germination percentage, seedling vigour index, acid invertase.