Indian Society of Genetics & Plant Breeding

Development of low-nitrogen adapted rice lines under low-nitrogen selection environment

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A study was conducted on the materials derived from the
crosses, Gampai/IR77674 and Progol/Asahan to evaluate
the performance of lines selected through pedigree method
of selection under adequate nitrogen (138 kg/ha) and low
nitrogen (34.5 kg/ha) conditions. Similar doses of nitrogen
were taken for evaluating (cultural environment) the selected
lines. Selection was made from F3 to F5 generations under
adequate and low nitrogen environments, then F6 was
evaluated at Muara Experimental Farm in dry season 2014,
using augmented design, with checks replicated thrice.
Results showed higher values of panicle weight, panicle
length and plant height. The method followed under
selection environment, similar to target environment was
suitable enough to obtain adapted rice lines for the target
environment. It is suggested that to obtain low nitrogen
adapted rice lines, selection in breeding program should
be conducted under sub-adequate nitrogen conditions in

Keywords: Rice lines, nitrogen, low, adequate, selection environment


Year: 2016
Volume: 76
Issue: 3
Article DOI: 10.5958/0975-6906.2016.00047.X
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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