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Title: INHERITANCE AND VARIABILITY OF SOME AGRONOMIC TRAITS IN GENETICALLY REMOTE HYBRIDIZATION OF COTTON

Author
item NAMAZOV, SHADMAN - Uzbekistan Institute Of Cotton Breeding And Seed Production
item Bell, Alois - Al
item Stipanovic, Robert - Bob
item YULDOSHEVA, RANO - Uzbekistan Institute Of Cotton Breeding And Seed Production
item USMANOV, SERGEY - Uzbekistan Institute Of Cotton Breeding And Seed Production
item AMANTURDIEV, IKROM - Uzbekistan Institute Of Cotton Breeding And Seed Production
item RAKHIMOV, TOJIDDIN - Uzbekistan Institute Of Cotton Breeding And Seed Production
item GOLUBENKO, ZAMIRA - Uzbekistan Research Institute

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Abstract Only
Publication Acceptance Date: 1/10/2011
Publication Date: 1/14/2011
Citation: Namazov, S., Bell, A.A., Stipanovic, R.D., Yuldosheva, R., Usmanov, S., Amanturdiev, I., Rakhimov, T., Golubenko, Z. 2011. Inheritance and variability of some agronomic traits in genetically remote hybridization of cotton [abstract]. Proceedings of the Beltwide Cotton Conferences, January 4-7, 2011, Atlanta, Georgia. p. 55.

Interpretive Summary:

Technical Abstract: Cotton is an important fiber and oil crop in Uzbekistan. But, most of commercial varieties have a narrow genetic base. The objective of our research is to develop cotton breeding lines with a high percentage of (+)-gossypol in seeds for feed for non ruminant animals, and with good fiber quality and agronomic traits. Herein we report our results on the study of inheritance and variability of various agronomic traits. We found there was intermediate inheritance of fiber length, lint percent, and such components of productivity as weight of 1 boll and weight of 1000 seeds, and over dominance and intermediate inheritance of yield among crosses between genetically distant cottons. A positive transgression was observed among the segregating F2-F3 populations in such traits as yield, weight of one boll, and weight of 1000 seeds; positive and negative transgressions were observed in fiber length and lint percent. This work has allowed us to develop two breeding lines (L-404/405 and L-6970) that combine high fiber and yield parameters. These lines are currently being evaluated in variety testing conducted by the Uzbek Scientific Research Institute of Cotton Breeding and Seed Production. We are continuing to develop breeding materials with a high percentage of (+)- gossypol in seeds with good fiber quality and agronomic traits.