National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Rice is one of the most widely consumed cereal crops providing a staple diet for half of the world’s population. Rice is highly susceptible to drought stress during reproductive/flowering stage, leading to significant reduction in plant height and grain yield. Leaf rolling is one of the acclimation responses and is used as a criterion for scoring drought tolerance. An osmoprotecant proline helps to cope with stress condition when plants are exposed to drought. A pot experiment was conducted to study the effect of drought stress on growth, yield and proline accumulation at flowering stage in eight rice genotypes viz. IET 24098, IET 24100, PHY 5, PHY 6, PHY 7, PHY 8, AC 39416 A, SM 686. Data were analyzed statistically for morphological, growth, yield and biochemical parameter viz. leaf rolling, plant height, grain yield, total dry matter and proline accumulation. The pots were arranged in completely randomized design with three replications. Drought stress caused increase in percent reduction of plant height, grain yield and total dry matter. On the other hand, fold increase of leaf rolling and proline accumulation was recorded in all rice genotypes as compared to control. The genotype IET 24098 showed maximum percent reduction in plant height, grain yield and total dry matter production while minimum was recorded in the genotype AC 39416A.However, leaf rolling and proline accumulation was increased in all rice eight rice genotype under drought stress. The minimum and maximum fold increase of leaf rolling and proline accumulation was recorded in the genotype AC 39416Arespectively while minimum fold increase of proline was recorded in the genotype IET 24098.The study revealed that the genotype AC 39416A may possess drought tolerance characteristic while the genotype IET 24098 may be drought sensitive based on growth, yield, leaf rolling and proline accumulation behavior which might be due to their genetic differences.
Citations |
 |
 |
 |
 |
