ASSESSMENT OF INTERVARIETY HYBRIDS OF COTTON F1 RESISTANCE TO VERTICILLIUM WILT
DOI:
https://doi.org/10.30850/vrsn/2019/6/29-31Keywords:
cotton, variety, enzyme, peroxidase, polyphenol oxidase, henylalanine ammonia lyase, hybrid, resistance, Verticillium wiltAbstract
Selection of cotton is carried out mainly on phenotypic indicators and most often the varieties obtained are either not sufficiently resistant to various diseases or their fiber is low standard of technical. The disease of cotton with the defeat of Verticillium dahliae Klebhan is mainly expressed by a profound change in the physiological and biochemical processes in plants. Peroxidase, polyphenol oxidase, phenylalanine ammonia lyase are the main enzymes of cotton phytoimmunity. NIISSVAH employees allocated and transferred to the biochemical analysis of the 9 cotton samples to the Institute of Bioorganic Chemistry AnRUz. As a result of research, the seeds were tested in order to study the activity of enzymes of chitin-specific peroxidase, polyphenol oxidase, phenylalanine ammonia lyase. The seedlings of hybrid combinations of F1 cotton were used to select breeding material with high resistance to Verticillium dahliae Klebhan. It was established that among the studied samples resistant to affect by the pathogen V.dahliae the following should be attributed combinations of first-generation hybrids - Sultan ? Namangan 34; Andijan-35 ? Namangan 34; F1 Namangan 34 ? Sultan; F1 Namangan 34 ? Gulbahor-2; F1 Namangan 34 ? Andijan-35; F1 Namangan 34 ? Andijan-16; F1 Gulbahor-2 ? Sultan.
