STUDIES ON MORPHOLOGICAL CHARACTERS FOR SELECTING FLOOD STRESS TOLERANT CLONES

Abstract

A pot experiment was conducted in concrete tank in the Bangladesh Sugarcane Research Institute (BSRI), Ishurdi, Pabna during 2003-2005 cropping seasons. The trial was conducted to screen flood stress tolerant clones. The clones I 137-96, I 82-98 and I 98-98 showed highly tolerant reaction having tolerance rating 1 against 30, 60, 90 and 120 d sustained flood stress condition, and maintained 70.5-79.2, 65.0-68.1, 56.4-58.6 and 45.0-49.1 per cent green leaf respectively. Besides, clones I 202-97, I 110-98, I 139-98, and I 142-98 showed tolerant reaction having tolerance rating 2 against 60, 90 and 120 d sustained flood stress condition and maintained 59.7-61.3, 45.4-55.7 and 39.4 – 40.8 per cent green leaf. The clone I 137-96 produced the highest fresh weight, dry weight and volume of primordial water roots (PWR) under flood stress condition. This screening programme will help the breeders for selecting suitable varieties for flood situation.