**4.5 Host plant resistance (HPR)**

Resistance among different kinds of insect pests is an emerging challenge in effective pest management crop as cotton plants confer it due its several traits. While some varieties of cotton that have high leaf hair structure and less gossypol glands are somehow resistance against thrips, although exact mechanism is not clear. Same as some cotton cultivars with okra shaped leaves showed partial resistance against whitefly [106]. So by increasing host plant resistance could be effective as well to manage insect pests. In this regard, [14], summarized detailed biotechnological solutions for sustainable cotton production.
