Plant bioregulators development

What factors will have a major influence on determining the development of new plant bioregulators and on opening up further possibilities for use in crop production ... 

The goal that is easiest to define, but hardest to achieve, is an increase in yield. After several years of intensive R + D work it is difficult - if not even impossible - to find bioregulators that increase the yield directly, and that any such increase will have to be achieved by influencing partial processes in a plant s growth and development (4). 

Elevation of the ethanol content occurs during the maturation stage of fruit development when acidity declines, total solids increase, and the flavor compounds accumulate to characteristically ripe levels. Since ethanol is a normal product of anaerobic respiration in plants, its accumulation signals a change in the pathway of energy metabolism. This summary of research on the control of ethanol accumulation in citrus fruit describes an approach to identify the role of energy metabolism in the bioregulation of maturation. 

They stimulate carotenoid biosynthetic pathways with no apparent herbicidal activity. A substantial amount of information on structure-activity relationships for bioregulation of carotenoids in higher plants has been developed. 

Biologically active natural products can be considered to be bioregulators, the name modeled in part on the plant growth hormones that were shown to regulate various plant growth and development processes Today, the levels required for activity are ever smaller and smaller For example, the pheromones have been found to be active at picogram concentrations and below ... 

Summary. Naturally occurring pest bioregulators have been isolated from a wide diversity of sources, often from geographically stressed regions which favor rapid growth of pest populations. In order for plants (or animals) to survive, they must develop mechanisms to avoid or cope with these pests. These mechanisms often involve chemicals that deter feeding, that are toxic, or that slow growth and maturation of the pest. 

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