Assertion (A) : Transfer of resistance genes can be achieved by sexual hybridisation between target and source plant.
Reason (R) : Disease resistant genes cannot be transferred by rDNA technology

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

A and R correct, R explains A

A and R correct, R does not explains A

A is incorrect, R is correct

A is correct, R is incorrect

answer is D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Breeding is carried out by the conventional breeding techniques (described earlier) or by mutation breeding.

The conventional method of breeding for disease resistance is that of hybridisation and selection above examples involve sources of resistance genes that are in the same crop species, which has to be bred for disease resistance, or in a related wild species.

Transfer of resistance genes is achieved by sexual hybridisation between the target and the source plant followed by selection.

Example: Resistance to yellow mosaic virus in bhindi (Abelmoschus esculentus) was transferred from a wild species and resulted in a new variety of A. esculentus called Parbhani kranti.

Watch 3-min video & get full concept clarity