ISSN 2375-1231
African Journal of Crop Science ISSN: 2375-1231 Vol. 3 (7), pp. 206-213, September, 2015. © International Scholars Journals
Full Length Research Paper
A study of sugarcane genotypes under flood stress condition and adaptive mechanisms
Fazle H.E, Fazlul A.A and Yunus M.O
Department of Crop Botany, Faculty of Agriculture, Sylhet Agricultural University, Sylhet, Bangladesh.
Accepted 02 August, 2014
Abstract
Juice quality, adventitious roots, growth rate and senesced leaves, green leaves were examined under flood stress conditions for six sugarcane genotypes I 112-01, I 6-04, I 39-04, I 152-04, I 189-04 and Isd 38. The pot study was conducted in an artificially created flood in a concrete water tank in the Bangladesh Sugarcane Research Institute during the 2010-2011 cropping seasons to screen flood tolerant clones. The clones I 6-04 and Isd 38 exhibited high tolerance to flooding following 30, 60 and 90 days and 30 cm depth above pot soil sustained floods. These varieties had >45% green leaf after 120 days stress periods. Clones I 112-01, I 39-04 and I 189-04 showed tolerant reactions following 30, 60 and 90d flood stress periods with > 40% green leaf after 90d. Clone I 6-04 produced the highest adventitious root (AR) (145.0 g/plant) followed by Isd 38 (110.0b g/plant).The clones I 6-04 and Isd 38 showed highest growth rate. Isd 38 showed highest Brix percent (20.15) and pol percent (14.52) followed by I 6-04 (Brix 19.95 and pol 14.12). Our results indicate that clone I 6-04 and Isd 38 performed better under flood stress conditions than other clones for selecting a stress tolerant variety.
Key words: Saccharum Officinarum, dry and green leaves, adventitious root (AR), growth rate, chlorophyll, juice quality.