Evaluating the vigour tests to predict the seedling emergence potential of okra [Abelmoschus esculentus (L.) Moench] seed lots
KrishiKosh
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Title |
Evaluating the vigour tests to predict the seedling emergence potential of okra [Abelmoschus esculentus (L.) Moench] seed lots
M Sc |
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Creator |
PRAVEEN PATIL, G. C.
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Contributor |
V. K. Pandita
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Subject |
sowing, developmental stages, germinability, land resources, vegetables, seed vigour, paper, crops, seed quality, statistical methods
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Description |
T-8390
The present study was conducted to evaluate some of the available seed vigour tests to predict field emergence in okra (Abelmoschus esculentus L. Moench) seed lots. Twenty one commercial seed lots of three varieties of Pusa Sawani, Pusa A-4 and Arka Anamika, were evaluated by the following laboratory vigour tests: germination, speed of germination, vigour index, brick gravel test, paper piercing test, accelerated ageing (AA), controlled deterioration (CD), dehydrogenase test, electrical conductivity (EC) and cold test. The vigour tests were able to assess vigour differences among the seed lots of all three varieties. The seedling emergence percentage in the field ranged from 35% to 63% for these seed lots. The correlation coefficient (r) of following laboratory vigour tests viz., standard germination (r=0.693**), speed of germination (r=0.700**), brick gravel test (r=0.719**), paper piercing test (r=0.905**) and controlled deterioration (r=0.931**) were significantly and positively correlated with field emergence. The vigour index I (r=0.206), vigour index II (r=0.298) and dehydrogenase test (r=0.101) were not significant with field emergence. Determination coefficient (R2) of seed lots for standard germination, speed of germination, brick gravel test, paper piercing test and controlled deterioration were found significant and explains 49%, 50%, 52%, 83% and 87% of variation in field emergence, respectively. The regression analysis result for vigour indices (I and II), dehydrogenase test and cold test explains 4%, 9%, 2% and 7% of the variation in field emergence, respectively. The correlation coefficient (r) and determination coefficient (R2) of controlled deterioration test and paper piercing test were found highly significant among all other vigour tests in predicting seedling emergence of okra seed lots. The results suggest that |
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Date |
2016-11-01T09:53:00Z
2016-11-01T09:53:00Z 2011 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/83071
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Format |
application/pdf
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Publisher |
IARI, DIVISION OF SEED SCIENCE AND TECHNOLOGY
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