Water stress response on morpho-physiology, biochemical parameters and yield of four different rice cultivars of Manipur


Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-023-00580-x
First Page: 186
Last Page: 191
Views: 1174

Keywords: Water stress, n Oryza sativa L., Total soluble sugar, Proline, Panicle


In a plant system, water content up to an optimum level is required for the different physiological processes. Drought stress was induced in four local rice (Oryza sativa L.) cultivars of Manipur namely Aso, Changkoh, Phourel-amubi and Taothabi for 5, 10, and 15 days. Morpho-physiological and biochemical changes during panicle initiation were assessed to observe the effect of water stress in these cultivars. After 15 days of the drought stress treatment, the Aso cultivar shows the maximum plant height(155.44 ± 0.64 cm) among the cultivars. Aso cultivars also show the highest tiller number with 10.33 ± 0.44, maximum panicle number (5.02 ± 0.03), highest grain yield per hill (114.67 ± 1.33) as compared with the remaining cultivars. Maximum chlorophyll content was also observed with Aso (1.17 mgg− 1 ± 0.02). In all the experimental results after drought stress treatment, it was observed that plant height, tiller number, total chlorophyll content, panicle number, grain yield per hillare reduced in all four rice cultivars. The content of total soluble sugar also decreases with Phourel amubi (32.92 mgg− 1± 0.09) and Taothabi (34.84 mgg− 1 ± 0.12 ) but an increase was observed with Aso (41.53 mgg− 1± 0.54 ) and Changkoh (36.19 mgg− 1± 1.26) rice cultivars. The proline content increases in all the rice cultivars of the paddy plant, showing maximum with Aso rice cultivars(0.20 mgg− 1 ±0.05). It may be noted in the present study that Proline and sugar accumulation was observed to be the highest with Aso varieties among the four varieties, which indicate the ability to give stable yield performance under stress condition. Hence, Aso cultivars can be cultivated in drought-prone area for better yield.

Water stress, n                     Oryza sativa L., Total soluble sugar, Proline, Panicle

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The authors are grateful to the Department of Life Sciences (Botany), Manipur University for providing necessary requirements for conducting the experiments.

Author Information

Chanu Wangkhem Sandhya
Plant Physiology Section, Department of Life Sciences (Botany), Manipur University, Canchipur, Manipur, India

Sarangthem Kananbala
Plant Physiology Section, Department of Life Sciences (Botany), Manipur University, Canchipur, Manipur, India