Q- Define the term Hybridisation and Photoperiod.
Answer- Hybridisation:
Hybridisation is the process of crossing of two plants differing from each other genotypically in one or more traits. Only through hybridization it is possible to combine all the characters in a single breed or variety.
The main objectives of Hybridisation are as follows:
1. To produce a single variety having combination of good characters.
2. To exploit as well as utilize the hybrid vigor.
3. To increase and generate the genetic variations through recombination.
Photoperiod:
Photoperiod refers to day length (sunlight) available to a plant is called photoperiod. Growth, flowering and maturation of crops are affected by this process. It is very essential in plants and trees.