Studies on seed storability in groundnut (Arachis hypogaea L.)
Loading...
Date
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU
Abstract
Seeds of two groundnut cultivars MH-4 and MH-34 were dried
to about 5% moisture content and stored with or without shells under
ambient as well as controlled conditions in gunny bags and polythene bags to
determine their effect on storage potential of seed samples. Germination was
recorded quarterly and it did not differ among seed samples stored for upto 6
months, but afterwards both germination and vigour index exhibited
significant reduction, irrespective of the storage environment and packaging
material. At the end of storage period (12 months), the reduction in the values
of germination ranged from 19.5-39.6 per cent among different combinations
of storage factors. Samples stored in polythene bags and controlled
conditions maintained the minimum seed certification standards even after
12 months of storage period and this combination found superior to others
for storage of groundnut produce. In order to standardize the accelerated
ageing technique, it was observed that as the temperature and ageing period
advanced, the germination percentage declined in both kernels and pods.
Maximum reduction in germination was observed after 96 hours in kernels
and 168 hours in pods at 41ÂșC. The germination percentages were below the
minimum seeds standards for this crop. Thus these conditions were found
optimum for performing accelerated ageing test to know the relative
storability of seed lots of groundnut varieties.
An effort was also made to assess the effect of seed priming
treatments on field emergence. Present study revealed that seed treated with
GA3 (50 ppm) gave comparatively better results among various treatments for
the characters total field emergence and field emergence index in both the
varieties while soaking in water in case of MH-4 and hydration dehydration in
MH-34 reduced the overall mean germination time.
Description
Keywords
Seed storage , Germination, Vigour index, accelerated ageing test, Seed priming, Field emergence index