EFFECT OF GAMMA IRRADIATION AND ENCAPSULATED NANOSCALE PARTICLES ON SEED QUALITY AND STORAGE OF SORGHUM (Sorghum bicolor L. Moench)
KrishiKosh
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Title |
EFFECT OF GAMMA IRRADIATION AND ENCAPSULATED NANOSCALE PARTICLES ON SEED QUALITY AND STORAGE OF SORGHUM (Sorghum bicolor L. Moench)
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Creator |
MADHAN MOHAN REDDY, CH
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Contributor |
SREEDHAR, M
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Subject |
sowing, germinability, storage, peptides, inorganic compounds, zinc, rice, enzymes, developmental stages, vegetative propagation
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Description |
Influence of fivegamma radiation doses generated from Co60 source of Gamma chamber 5000 in combination with three nano scale particles along with control on seed quality parameters of sorghum variety M35-1 was studied. Seed quality parameters viz., germination percentage, field emergence, speed of germination, peak value of germination and coefficient of velocity of germination, root, shoot, seedling length, vigour index, electrical conductivity, superoxide dismutase, seed moisture and seed health were evaluated immediately after irradiation and up to nine months under storage at ambient conditions. The experiment was laid out in a Completely Randomised Design with factorial concept. Marked significance of interaction effects was recorded for various seed quality parameters studied immediately after nano scale particle treatment and exposing the seed to selected doses of gamma rays. The results indicated that gamma doses up to 600 Gy were found to exercise positive influence in enhancing all the germination, seedling and biochemical parameters in all nano scale particles viz., control, Glutathione and Zinc oxide except Glutathione encapsulated Zinc oxide. However, these nano scale particles differed significantly in their response to radiation doses and registered variable values for seed quality parameters. The doses beyond 600 Gy had detrimental effect by interfering with various seed quality attributes. The analysis of bimonthly data at four intervals on seed storage potential up to nine months indicated significant influence of storage period on all the seed quality parameters including seed health. The interaction effects between storage period, nano scale particles and gamma doses were also highly significant. Marked decline in germination percentage, seedling dimensions and corresponding vigour index was noticed over a period of nine months. However, The results also indicated that among germination and seedling traits studied, peak value of germination, vigour index and root length were the most sensitive seed quality parameters affected by ageing due to storage under ambient conditions. These attributes registered higher reduction at the end of nine months, indicating that these were the most sensitive characters affected during storage thus, can serve as reliable parameters for assessing seed quality under the influence of gamma radiation. The electrical conductivity values were also found to increase significantly at the end of nine months of storage. The study revealed that, combinations viz., control / 200, 600 Gy, Glutathione / 200, 400 Gy and Zinc oxide / 800 Gy performed better for various germination, seedling, biochemical, seed moisture and seed health parameters (weevil infestation) evaluated during storage.The per se performance of these interactions also indicated their superiority over remaining treatments for these attributes. From the results of the study it could be concluded that, gamma doses 200 and 400 Gy showed superiority in influencing all the seed quality parameters positively during storage. Glutathione and Zinc oxide exhibited better response in desirable direction than Glutathione encapsulated Zinc oxide to irradiation during storage in terms of maintenance of seed quality particularly the germination percentage above Minimum Seed Certification Standards prescribed for the crop. Glutathione encapsulated Zinc oxide perform poorly for all seed quality parameters at all gamma doses. The superior combinations identified in this storability study can be further validated for commercial application. |
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Date |
2017-01-03T12:00:59Z
2017-01-03T12:00:59Z 2015 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/94119
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Language |
en
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Relation |
D9891;
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Format |
application/pdf
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Publisher |
PROFESSOR JAYASHANKAR TELANGANA STATE AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD
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