EFFECT OF LOW TEMPERATURE TREATMENT IN BRASSlCA JUNCEAL.

Abstract

Innofthernlndia, !sudden fall bf temperature below freezing point
oftencauses damage to crop yields especially to rapeseed and mustard
where the yield Josscs.are reported to be as high as 70 to 90 per cent
(Kumar' ,'1I1d Kuinar,1989). The damage is attributed to ice formation
in the plant tissue (Levitt, 1980). Keeping this in view, the present study
was undertaken in Brassica juncea L. grown under field condition to
investigate effect of low temperature on seed number per siliqua, an
important seed yield contributing trait, by using a movable freezing
chamber. The information would be utilized for breeding frost tolerant
lines.