Describe the role of pituitary and

ovarian hormones during the menstrual cycle in a human

female

.

(a) Artificial hybridisation is a technique which ensures that the seeds are formed only from the desired set of pollen grains. It includes emasculation and bagging. Removal of stamens or anthers or killing of pollen grains of a bisexual flower without affecting the female reproductive organs is called emasculation. The emasculated flower is immediately enclosed in a plastic or butter paper bag to avoid pollination by unwanted pollen. This process is called bagging

 

 

(b) Importance of artificial hybridisation: (i) It helps plant breeders to cross a particular plant with desired pollen grains. (ii) This technique helps in the production of hybrids without contamination by unwanted pollen grains.

 

 

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