INFLUENCE OF PROVENANCE ON SEED QUALITY AND STORABILITY IN DCH-32 HYBRID COTTON
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Date
1999
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University of Agricultural Sciences, Dharwad
Abstract
Studies on influence of provenance on seed quality and storability in
DCH-32 hybrid cotton were made in the Department of Seed Science and
Technology, University of Agricultural Sciences, Dharwad during 1998.
Freshly harvested seeds of DCH-32 hybrid cotton produced during Kharif
1998 were collected from 18 talukas belonging to five agro-climatic zones
through the Kamataka State Seed Certification Agency, Bangalore.
The initial seed quality parameters viz., 100 seed weight, germination,
seedling length, vigor index, seedling dry weight and field emergence were
better with- lower moisture content and electrical conductivity in seeds produced
in Gadag, Bagalkot, Koppal, Kustagi and Ron talukas of Northern dry zone,
Manvi taluka of North Eastern dry zone and Sira taluk of Central dry zone.
While, all these seed quality parameters were lower with higher moisture content
and electrical conductivity in seeds of Chintamani and Srinivasapur talukas of
Eastern dry zone and Hiriyur taluka of Central dry zone.
The storability studies indicated that seeds produced in Gadag, Bagalkot,
Koppal, Kustagi and Ron talukas of Northern dry zone, Manvi taluka of
North-Eastern dry zone and Sira taluk of Central dry zone stored under ambient
conditions in cloth bags maintained the germination above the seed certification
standard (65%) upto 10'*' month of storage with high seedling parameters. While,
seeds of Srinivasapur and Chintamani talukas of Eastern dry zone and Hiriyur
taluka of Northern dry zone maintained viability only for six months.
Among different storage containers satisfactory germination was
maintained up to 10th month in seeds stored in polythene bag and high density
polyethylene bag and for eight months in seeds stored in cloth and gunny bags.
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No . of references 56