PJB-2019-324
COMPUTING DROUGHT BY PHYSIOLOGICAL AND BIOCHEMICAL MARKERS IN COTTON
Rashid Iqbal
Abstract
Water is the basic unit for sustaining healthy life. Limited or unavailability of water leads to ultimate plant death. Many techniques have been developed to cope this core issue. Partial root zone drying (PRD) being one of the effective technique, plays a major role in reducing harmful effects of water deficit stress. In PRD, half roots are kept dry and remaining half roots are watered the cycle is then reverse allowed dry part to become wet and wet part to become dry. A wire house experiment was carried out to evaluate the performance of five cotton varieties (FH-142, IUB-222, IUB-13, MM-58 and NOOR) under two irrigation techniques (I0= Control irrigation and I1= PRD irrigation) arranged in completely randomized design. Drought stress badly affected the growth and physiology of all cotton varieties. Among varieties, MM-58 performed best achieving maximum, rate of photosynthesis, water related parameters and anti oxidants activity. Intended for irrigation levels, higher values of growth and water related parameters was found in control treatment while quality traits and biochemical activities were more in PRD treatment. It was concluded that water deficit condition adversely affected performance of all the cotton varieties however MM-58 showed best response and NOOR performed poorly under PRD irrigation.
To Cite this article:
Download
