Indian Society of Genetics & Plant Breeding

Evaluation of genetic potential of land races and improved varieties for drought tolerance in rice (Oryza sativa L.)

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Genetic potentialities of 13 parents (including eight land
races and five high yielding varieties) and their 40 hybrids
of rice
(Oryza sativa L.) was assessed through combining
ability studies on 17 yield and drought tolerant traits.
Chandaikar, Norungan and Nootripathu among lines and
Co 47, ASD
18 and PMK 3 among testers were identified
as potential parents based on
per se performance and
gea effects for maximum number of characters and crosses
involving these parents would result in identification of
superior segregants with favourable genes for most of
the drought tolerant and yield traits. Three cross
viz., Nootripathu I PMK 3, Chandaikar I ASD
18 and Nootripathu I ASD 18 were recommended for
recombination breeding based on significant
gea effects
of parents and non significant
sea effects of hybrids in
order to get desirable segregants in early segregating
generation for drought tolerance and yield attributes

Keywords: Rice, genetic potentiality, drought tolerant traits, combining ability


Year: 2006
Volume: 66
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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