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Effect of ultra dry seed storage on longevity of onion (Allium cepa) and chinaaster (Callistephus chinensis) under ambient and controlled temperatures.

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Title Effect of ultra dry seed storage on longevity of onion (Allium cepa) and chinaaster (Callistephus chinensis) under ambient and controlled temperatures.
 
Creator H. S. Yogeesha, K. Bhanuprakash, K Padmini and L B Naik,
 
Subject China aster, Onion, Seed storage, Ultra dry
 
Description Not Available
Ultra dry seed storage was studied in onion (Allium cepa L.) and china aster [Callistephus chinensis (L.) Nees]
to find out its effect on seed longevity under ambient and controlled low temperatures. Seeds of onion cultivars Arka
Kalyan and Arka Niketan ultra dried to 2.8 and 2.6 %, respectively, and seeds of china aster cultivar Arka Kamini ultra
dried to 3.0% were compared with seeds of respective cultivars having moisture content close to recommended levels
for packing in moisture proof containers. These seeds were hermetically sealed in aluminium pouches and stored at
ambient and controlled (constant 15°C) temperatures. The initial germination in onion was 90.0 and 88 % in Arka
Niketan and Arka Kalyan, respectively, and it remained unaffected after ultra drying. During storage, ultra dry seeds
and seeds with ~5% moisture content of both varieties showed no significant reduction in seed germination, first count,
seedling vigour and field emergence even after 54 months of storage both under ambient and controlled temperatures.
In china aster, seeds with 5.9% moisture showed decline in seed viability and vigour under ambient temperature after
18 months of storage and rapid decline was noticed after 24 months of storage, reaching zero at 36 months but at 15°C
showed no decline in viability up to 48 months of storage. Ultra dry seeds maintained higher viability and vigour at
both ambient and at 15°C even after 48 months of storage. Genetic fidelity tests on onion seed clearly demonstrated
that neither the profiles of soluble proteins and enzymes nor the DNA were affected by ultra drying.
Institute fund
 
Date 2019-03-19T06:55:18Z
2019-03-19T06:55:18Z
2017-03-01
 
Type Article
 
Identifier Not Available
0019-5022
http://krishi.icar.gov.in/jspui/handle/123456789/17464
 
Language English
 
Relation Not Available;
 
Publisher Indian Council of Agricultural Research, New Delhi