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
what is the meaning of direct and indirect respiration

Explain Asystole and Pulseless Electrical Activity (PEA) The outcomes from these rhythms are generally much worse than for VT/VF, unless a readily correctable cause is identif

Activators Activity  of many  enzymes is  influenced by  certain ions called as activators. Large number of enzymes such as hexokinase that require ATF are also in need of diva

What is the term for the pattern of base pairing between one DNA strand and its partner in a duplex?

Fibroids, also called as leiomyomas, are benign smooth muscle tumors that happen in the uterus. They grow under the influence of estrogen and progesterone, and are therefore seen i

Congenital Heart Diseases   Congenital heart diseases are classified in many ways. One set of classification is cyanotic and acynotic conditions. Morphological classification

Explain Regulatory enzymes Regulatory enzymes:   Citrate  synthase,  isocitrate  dehydrogenase  and a-ketoglutarate dehydrogenase complex are the key  enzymes which  regulate

Q. How do the Golgi apparatus act and the rough endoplasmic reticulum in the production and releasing of proteins? The rough endoplasmic reticulum has in its outer membrane man

Q. Importance of Primary prevention of diabetes mellitus ? Primary prevention has been found to be cost effective in the long run as it reduces unwarranted human suffering. Pre

Q. During mitotic anaphase is there separation of identical chromatids or separation of homologous chromosomes? In the anaphase of mitosis the identical chromatids complete and