Methods to overcome incompatibility, Biology

Methods to Overcome Incompatibility

It has been possible to facilitate the germination of incompatible pollen by extracting pollen wall proteins from compatible pollen and supplying these during interspecific crosses. The pellicle, which lies over the cutinised wall of the stigmatic papillae is functionally important in the capture and hydration of pollen grains and may also be the site of the recognition reactions. Within Oenothera stylar grafting experiments led to pollen tube growth in incompatible styles. Treatment with Ca++ resulted in pollen tube growth in incompatible style to some extent in Oenothera. Emasculation of immature flowers in Petunia reduced pistil elongation and weakened the incompatibility barrier. In general relatively high temperature has been found to inactivate the incompatibility mechanism and the site of activation has been the style.

Self-incompatibility in Lilium could be overcome by an interaction of temperature and 1% solution of naphthaleneacetamide-in lanolin. Heating of intact and detached style in water at 50? for 6 min before pollination could also overcome incompatibility. The stigmas of some plants with sporophytic incompatibility have a cuticular layer which serves as an incompatibility barrier. Pollen of such plants possess a cutinase enzyme system for destroying the cuticular layer.

Posted Date: 1/23/2013 5:51:41 AM | Location : United States







Related Discussions:- Methods to overcome incompatibility, Assignment Help, Ask Question on Methods to overcome incompatibility, Get Answer, Expert's Help, Methods to overcome incompatibility Discussions

Write discussion on Methods to overcome incompatibility
Your posts are moderated
Related Questions
Q. How do chordates reproduce? Reproduction in beings of the phylum Chordata is sexual, with the exception of urochordates that can be also reproduce asexually. In some classes

How are the proteins important in metabolism of lens? Proteins Physical slate of protein is important for transparency of lens. Morner first time classified protein of l

. Explain why the traditional classification of unicellular eukaryotes as ‘protozoa’ or ‘protists’ is invalid in terms of modern systematics and evolutionary theory. Why are trad

Define Reagents for Measurement of pH? Buffer solutions of pH 4, pH 7 and pH 9.18 for calibration and an unknown solution (i.e. solution of unknown pH) You can prepare these

LEGAL RIGHTS OF PSYCHIATRIC PATIENTS: When a patient is admitted in psychiatric hospital he may be deprived of  the freedom  to leave the hospital, and also to maintain certai

Methods of Cognitive Neuroscience Given the vast complexity of human perceptual and cognitive processes on one hand, and that of the human brain on the other (with approximately

Define Contractile Protein - biological functions of protein? These proteins take part in contractile processes like muscle proteins also those found in other cells and tissues

Diesel-like liquid obtained from materials of biological origin is called biodiesel. Biodiesel can be obtained (i) either from lipids accumulated plants and algae or (ii) from

father of histology

GERENAL CHARACTERICS OF PHYLUM ANNELIDA