Indian Society of Genetics & Plant Breeding

Important

INHERITANCE OF REPRODUCTIVE STAGE COLD TOLERANCE AND ADAPTABILITY IN TWO /APONICA.x INDICA RICE CROSSES

Published on

The inheritance of reproductive stage cold tolerance and adaptability was studied
in seven generations of two japonica x indica rice crosses. Plants eannarked for
cold treatment were subjected to low-temperature at 20ol1SoC for 5 days in the
naturally lighted 3-SAL cabinets in the phytotron at the International Rice Research
Institute, Manila, Philippines at the first indication of panicle exsertion. The
additive-dominance model was not a good fit for flowering duration, percent fertility
and depression in percent fertility. Of the three epistatic effects, dominance x
dominance and additive x additive types were more important. Complete to overdominance was operative for the three characters. The narrow sense heritabilities
ranged from 93% to' 98%.
 

Keywords: Rice, reproductive stage cold tolerance, gene effects, epistatic model

Info

Year: 1999
Volume: 59
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

info_circle

Download PDF