Neli Valkova, Valentina Dimitrova, Minka Koleva and Spasimira Nedyalkova
Agricultural Academy, Field Crops Institute – Chirpan, 6200 Chirpan, Bulgaria
Valkova, N., Dimitrova, V., Koleva, M. & Nedyalkova, S. (2026). Specialized trait collections for the different selection directions in cotton. II. Specialized trait collections based on exceptional characteristics for ecological cotton production and heterosis selection. Bulg. J. Agric. Sci., 32(6), 601–609
Specialized trait collections based on exceptional characteristics for ecological cotton production and heterosis selection have been created: specialized collection based on naturally colored cotton (brown and green); specialized collection based on naked seed genotypes of cotton; specialized collection based on forms with male sterility. Organization of the relevant collections was in accordance with the requirements of selection process for a complex assessment of biological and economic qualities, adaptability to different environmental conditions, resistance to diseases and enemies. Created collections will facilitate the use of available genetic resources in cotton breeding to solve some existing ecological problems in the production and heterosis selection, to create varieties with high economic and ecological effects, and high-yielding hybrids based on male sterility. On the other hand, with them, commercial and other available germplasm will be preserved and the hereditary basis of cotton selection in the respective directions will be enriched and expanded.