Damaged sieve tubes are sealed by deposition of

Somaclones are obtained by

Which of the following are fused in somatic hybridization involving two varieties of plants?

Viral infection is usually absent in

To obtain virus ­ free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?

Possible to achieve propagation of a large number of plants in very short duration is known as ............