Open AccessEffect of moisture stress on leaf protein, proline, peroxidise activity and yield in released and pre-released genotypes of groundnut (Arachis hypogaea L.)
Author(s) -
H. Y. Patil,
. Pooja,
V.P. Chimmad
Publication year - 2020
Publication title -
international journal of agricultural sciences/international journal of agricultural sciences
Language(s) - English
Resource type - Journals
eISSN - 0976-5670
pISSN - 0973-130X
DOI - 10.15740/has/ijas/16.2/260-264
Subject(s) - arachis hypogaea , moisture stress , proline , osmolyte , point of delivery , moisture , agronomy , horticulture , peroxidase , water content , crop , chemistry , arachis , yield (engineering) , biology , botany , enzyme , biochemistry , geotechnical engineering , organic chemistry , amino acid , engineering , materials science , metallurgy
The performance of crops need to be assessed for their production under erratic rain fall pattern, increased temperatures, and enhanced atmospheric CO2 concentration. In the present study groundnut was chosen as test crop and selected genotypes [four released (GPBD-4, G2-52, Dh-86 and TMV-2) and four pre-released (Dh-245, Dh-232, Dh-256 and Dh-257)] were studied to quantify the impact of moisture deficit stress at critical growth stages i.e., 40 to 80 DAS and 80 DAS to harvest. Leaf protein and proline increases in tolerant genotypes at higher moisture stress levels than susceptible genotypes as they acts as osmolytes and maintains the turgidity of the cell and hence, checks the water loss and peroxidase enzyme activity which in turn scavenges ROS produced due to stress as a result there was reduction in yield. The genotypes, GPBD-4, Dh-257 and Dh-256 recorded higher per cent increase in leaf soluble protein, leaf proline and peroxidase enzyme activity at all the stages. Increase was higher at 80 DAS to harvest stressed plants than 40 to 80 DAS stressed plants.