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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
 
Creator PRAVEEN PATIL, G. C.
 
Contributor V. K. Pandita
 
Subject sowing, developmental stages, germinability, land resources, vegetables, seed vigour, paper, crops, seed quality, statistical methods
 
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
 
Date 2016-11-01T09:53:00Z
2016-11-01T09:53:00Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/83071
 
Format application/pdf
 
Publisher IARI, DIVISION OF SEED SCIENCE AND TECHNOLOGY