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Variation in seed dormancy and α-amylase activity in Indian rice (Oryza sativa) accessions

Indian Agricultural Research Journals

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Title Variation in seed dormancy and α-amylase activity in Indian rice (Oryza sativa) accessions
 
Creator RATHI, SUNAYANA
SARMA, RAMENDRA NATH
YADAV, RAJ NARAIN SINGH
 
Subject α-amylase activity, Pre-harvest sprouting, Seed dormancy
 
Description Lack of adequate seed dormancy is the major reason for pre-harvest sprouting in field under wet weather conditions.This results in significant economic loss for grain industry around the world. Objective of this study was to evaluate riceseed dormancy and the use of α-amylase enzyme activity as an indicator of dormancy level. There was, significantvariation for degree of dormancy among 100 accessions, procured from the Regional Agricultural Research Station (RARS),Titabar, India. Cheniahu with highest duration of dormancy (25 days) can be a potential donor for dormancy, which can beexploited for development of rice variety with desired period of dormancy to resist the problem of pre- and post-harvestsprouting. Rice seeds were germinated and α-amylase activity was measured 0, 3, 5, 7, 10 and 12 days of germination.Significant steady increases in á-amylase activity were observed from third day of germination but decreased after 10 daysof germination. The α-amylase activity was low in dormant genotypes and high in non-dormant genotypes and proved tobe an efficient marker of the seeds dormancy level.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-02-11
 
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/27218
 
Source The Indian Journal of Agricultural Sciences; Vol 83, No 1 (2013)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/27218/12380
 
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