|Book Group Author:||NA|
Plant growth and productivity is negatively affected by moisture stress. Moisture stress in natural environments usually arises due to lack of rain, a condition known as drought stress. Under drought conditions yield is determined by water use efficiency. This character showed significant genetic variation and heritability. Indian mustard is mostly early and late and approximately 40% of the total crop in the country is found under late sown-irrigated conditions. These crops have been found to suffer from heat and drought stress. Therefore, it becomes necessary to select cultivars that thrive reasonably well under stress conditions. Field experiments were conducted in India, in 2003, to study the influence of different magnitudes of soil moisture stress on metabolic factors in relation to yielding potential in Indian mustard cv. Varuna at flowering. Results showed an increase in stress intensity, while the leaf water potential, relative water content and leaf area declined significantly. Water stress substantially reduced the seed yield, pod number, oil and protein contents in seeds, Metabolic factors, such as nitrate reductase activity and chlorophyll content, decreased significantly under severe water stress with increase in protein and free proline content in leaves.
|Pages:||142 - 144|
|Journal:||International Journal of Plant Sciences (Muzaffarnagar)|
chlorophyll, crop yield, drought, enzyme activity, enzymes,growth, Indian mustard, leaf area, leaves, nitrate reductase, plantwater relations, pods, proline, stress, stress response, water stress,water use efficiency, India, Brassica juncea, Brassica, Brassicaceae,Capparidales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, South Asia, Asia, Developing Countries, Commonwealth ofNations, Capparales, Field Crops (FF005) (New March 2000), PlantPhysiology and Biochemistry (FF060), Plant Water Relations (FF062),Plant Production (FF100)