Advertisements
Advertisements
प्रश्न
Mutations are beneficial for plant breeding. Taking an example, justify the statement.
उत्तर
Mutation is the process by which genetic variations are created through changes, in the base sequence within genes resulting in the creation of a new character or trait not found in the parental type. It is possible to induce mutations artificially through use of chemicals or radiations (like gamma radiations), and selecting and using the plants that have the desirable character as a source in breeding. This process is called mutation breeding. In mung bean, resistance to yellow mosaic virus and powdery mildew were induced by mutations.
APPEARS IN
संबंधित प्रश्न
Give reason :
Emasculation is done in a flower which is selected as female parent.
In Brassica (rapeseed, mustard)........................ varietys is resistant to Aphids.
(a) Pusa A-4
(b) Pusa Gaurav
(c) Pusa Sawni
(d) . Pusa Shubra
Explain the effect of light and temperature on photosynthesis.
Crosses between the plants of the same variety are called
Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.
Column-I | Column-II | ||
(I) | Banana | (p) | little leaf |
(II) | Sugarcane | (q) | bunchy top |
(III) | Papaya | (r) | leaf roll |
(IV) | Brinjal | (s) | grassy shoot |
(t) | leaf curl |
Give any four advantages of mutation breeding.
Which of the following is not an objective of Biofortification in crops?
33 percent of India’s Gross Domestic Product comes from ______.
A collection of all the alleles of all the genes of a crop plant is called ______.
Write two varieties of sugarcane having high sugar content.