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Development of Mar Cotton Germplasm with Morphological Mutant Traits

Peggy M. Thaxton, Kamal M. El-Zik and Ted Dusek


Higher levels of resistance to insects, plant pathogens, and abiotic stresses are needed in cotton cultivars to enhance plant health and increase yield. The multi-adversity resistance (MAR) program has been successful in transferring and developing cotton germplasm with morphological mutant traits known to impart host resistance to pests. The performances of two okra-leaf strains, OSIKRHQWIH-2-94 and OHGPILBHQH-1-96, and a frego bract strain RCBCLCQPIH-1-95 were similar to the commercial cultivars for yield and fiber quality. Progress in yield was not as great in the nectariless, glandless and red-plant color strains. The MAR strains, especially the okra-leaf and frego bract, have simultaneous genetic gains for many traits, and will provide new sources of host-plant resistance to cotton insects and plant pathogens.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 557 - 564
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998