Agriculture Reference
In-Depth Information
Fig. 46
Grain Yield, Spikelets per m
2
, % fertile grains and 1000 grain weight
variations under genotype groups.
Color image of this figure appears in the color plate section at the end of the topic.
A close correlation between the cooling index and percentage
of sterility was obtained from an analysis of spikelet sterility
attributed to low temperatures at booting, that implies the day
and night temperatures equally affect the incidence of spikelet
sterility at booting (Fig. 47 & Table 43).
Thus it is evident that low temperature infl uenced the
yield and yield components very much. But the degree of loss
depends on the location specifi c situation and the other abiotic
factors prevalent in the location. The span of cold spell is also
important. Biotic factor associated with the low temperature
also affects the yield. Hence, in totality it is quite complex and
