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Prediction of seedling emergence in onion (Allium cepa) seed lots through saturated salt accelerated ageing test

Indian Agricultural Research Journals

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Title Prediction of seedling emergence in onion (Allium cepa) seed lots through saturated salt accelerated ageing test
 
Creator SINGH, PUNEET KUMAR
PANDITA, V K
TOMAR, B S
 
Subject Allium cepa, Non-standard germination temperatures, Onion, Saturated salt accelerated ageing, Seedling emergence, Vigour tests
 
Description The emergence of six seed lots of two onion (Allium cepa L.) cultivars Pusa Red and Pusa Madhvi was compared by standard germination, vigour index, germination at non-standard temperatures, accelerated ageing and saturated salt accelerated ageing tests. Germination tests were conducted at standard (20oC) and non-standard temperatures of 15oC, 25oC and 30oC. The accelerated ageing (AA) and saturated salt accelerated ageing (SSAA) tests were performed using four relative humidity levels, viz. standard AA (RH 100%), NaCl (RH 75%), Mg (NO3)2 (RH 53%) and CaCl2 (RH 29%). These vigour tests were able to assess vigour differences among different seed lots. The field emergence percentage ranged from 32% to 55.5% in onion seed lots. Field emergence had non-significant correlation with germination at non-standard temperatures of 15oC, 25oC and 30oC. However, accelerated ageing (RH 100%) and saturated salt accelerated ageing using NaCl (RH 75%) showed positive and significant correlation value of 0.943 and 0.957, respectively. The regression analysis results for onion seed lots revealed that standard germination, accelerated ageing (AA) and saturated salt accelerated ageing (SSAA) test using NaCl (RH 75%) explain 88%, 88% and 91% variation in field emergence, respectively. The results suggest that saturated salt accelerated ageing (SSAA) test using NaCl (RH 75%) is useful vigour tests to predict seedling emergence in onion seed lots.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2015-07-09
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/50127
 
Source The Indian Journal of Agricultural Sciences; Vol 85, No 7 (2015)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/50127/21415
 
Rights Copyright (c) 2015 The Indian Journal of Agricultural Sciences