Semi-dwarf varieties were introduced in rice. This was made possible by the presence of dwarfing gene in rice. Name this dwarfing gene.

One Line Answer

Dee-geo-woo-gen a dwarf variety from China.

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Methods of Plant Breeding for Crop Improvement

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Chapter 20 Breeding and Biotechnology
Evaluation | Q VI. 2. | Page 298

Which method of crop improvement can be practised by a farmer if he is inexperienced?

In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are ______.

The process of producing an organism with more than two sets of chromosome is called mutation.

A group of plants produced from a single plant through vegetative or asexual reproduction are called a pureline.

Assertion: Hybrid is superior than either of its parentsReason: Hybrid vigour is lost upon inbreeding.

Give the name of wheat variety having higher dietary fibre and protein.

Name three improved characteristics of wheat that helped India to achieve high productivity

Biofortification may help in removing hidden hunger. How?

With a neat labelled diagram explain the techniques involved in gene cloning.

Higher Order Thinking Skill (HOT)

‘P’ is a gene required for the synthesis of vitamin A. It is integrated with genome of ‘Q’ to produce genetically modified plant ‘R’.