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STUDIES ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF SOYBEAN [Glycine max (L.) Merrill] GENOTYPES TO INDUCED WATER STRESS

KrishiKosh

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Title STUDIES ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF SOYBEAN [Glycine max (L.) Merrill] GENOTYPES TO INDUCED WATER STRESS
 
Creator RAMESH, CH
 
Contributor PADMA, V
 
Subject STUDIES, PHYSIOLOGICAL, BIOCHEMICAL, RESPONSES, SOYBEAN, GENOTYPES, INDUCED, WATER, STRESS
 
Description Field experiments with soybean varieties were conducted during post-rainy
seasons of 2005-2006 at College Farm, College of Agriculture, Rajendranagar,
Hyderabad to evaluate the physiological and biochemical responses of soybean
genotypes to induced water stress. The experiment was laid out in a split-plot design
replicated thrice with three main treatments viz., control or No water stress, water
stress at flowering phase and water stress at pod filling phase, with five soybean
genotypes viz., MAUS-47, JS-335, JS-93-05, PK-1029 and NRC-37 as sub-plot
treatments.
The results obtained in the present investigation revealed that plant height,
number of branches, number of leaves, dry weights of leaves, stem, pods and total
dry weight, seed yield, pod per plant, seeds per pod and 100 seed weights were
decreased with the water stress in soybean genotypes. The decrease was more when
stress was imposed at flowering phase than that at pod filling phase. Among
soybean genotypes, JS-93-05 was found relatively more tolerant to water stress,
while MAUS-47 was relatively susceptible.
Among all soybean genotypes tested, maximum drought index and drought
tolerance efficiency were recorded in JS-93-05, while the lesser values were
recorded in MAUS-47.
Biochemical studies revealed that catalase, SAMS, GST, glycine betaine and
proline content increases, while decrease in Ascorbic acid content and expression of
isomorphs viz., SOD, POX and trehalase observed in water stress conditions in
soybean genotypes.
Based on physiological and biochemical studies it could be concluded
that water stress at flowering and pod filling phases decreases the seed yield
22.76 % and 17.74 % respectively. Among the five cultivars tested Cv. JS-93-05
performed better in all main treatments viz., no water stress, water stress at flowering
and water stress at pod filling phase.
 
Date 2016-08-16T13:50:39Z
2016-08-16T13:50:39Z
2006
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72572
 
Language en
 
Relation D7823;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD