STUDIES ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF SOYBEAN [Glycine max (L.) Merrill] GENOTYPES TO INDUCED WATER STRESS
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Title |
STUDIES ON PHYSIOLOGICAL AND BIOCHEMICAL RESPONSES OF SOYBEAN [Glycine max (L.) Merrill] GENOTYPES TO INDUCED WATER STRESS
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Creator |
RAMESH, CH
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Contributor |
PADMA, V
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Subject |
STUDIES, PHYSIOLOGICAL, BIOCHEMICAL, RESPONSES, SOYBEAN, GENOTYPES, INDUCED, WATER, STRESS
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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. |
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Date |
2016-08-16T13:50:39Z
2016-08-16T13:50:39Z 2006 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/72572
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Language |
en
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Relation |
D7823;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
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