The biggest challenge to agriculture scientists today is abiotic stresses like drought, salinity and flood . As a result of these stresses, a huge quantum of economic productivity is lost. Every year one or two new varieties are released in cash crops for either drought or salinity tolerance or sometimes in rice for flooding tolerance as well. At times the induction of stress tolerance in these plants is comparatively marginal only. Therefore, it may be of interest to note whether the quality chlorophyll fluorescence could be taken as a marker of stress tolerance
The target of these stresses is about root sensing and signal processing at leaf level after a while. Chl fluorescence of chloroplasts is affected as parent effect but any index of growth like light reflection or leaf area signatures would have changed before fluorescence changes.
Yes chlorophyll inflorescence will be strongly affected by both drought or salinity stress.However the quality of chlorophyll florescence wil be more guided by the fact which out of the two types of abiotic stresses induces greater accumulation of ROS..
I don't think , we can consider humus as biofertilizer since humus is the most resistant fraction of orvanic matter and not a carrier of microbes, while biofertilizers are the carrier of effective microbes..
I think , in any cases the quality depends the linear relationship with the applied stress
Petko, i agree with you , the quality of chlorophyll fluorescence will be highly dependent upon the quantum of stress, whether it is drought stress or salinity stress...
I think it is really important to have another physiological parameter parrallel with chlorophyll fluorescence to validate the model with some regression analysis as well
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