TAILIEUCHUNG - Genetic studies on resistance to Jassid (Amrasca biguttula biguttula) in segregating F2 population of Interspecific (Gossypium hirsutum L. X Gossypium barbadense L.) cotton

Studies on the genetic basis for resistance to jassid (Amrasca biguttula biguttula) was done in F2 segregating generation of one promising cross of interspecific cotton (Gossypium hirsutum L. X Gossypium barbadense L.) in the year 2015-16. The cross FQT-37 X SB-YF-425 segregated in the ratio of 13:3 for susceptibility and resistant. In the case of resistant type, all the plants were in grade II, implying moderate resistance. This gene action is called as inhibitory gene action. Here, one dominant gene produces the concerned phenotype, while its recessive allele produces contrasting phenotype. The second dominant gene, called inhibitory gene, has no effect of its own on the character in question; however, it can stop the expression of the dominant allele of the first gene. The development of high yielding jassid resistance genotypes has become more important in cotton cultivation today. Identification and use of a tolerant/resistant cultivar are of great relevance these days as it is eco-friendly and cost effective. | Genetic studies on resistance to Jassid Amrasca biguttula biguttula in segregating F2 population of Interspecific Gossypium hirsutum L. X Gossypium barbadense L. cotton

• Sinh học
• Interspecific cotton
• Inhibitory gene action
• Segregating F2 population
• Jassid (Amrasca biguttula biguttula)
• Resistance to Jassid
• Heterotic group
• Interspecific hybrids
• Combining ability and Cotton
• Cotton interspecific heterotic group hybrids
• Seed cotton yield and its components
• Gossypium hirsutum L
• Hybrid breeding program
• Relative growth rate
• Randomized block design
• Seed cotton yield
• Genetic diversity
• Mahalanobis D2 statistic
• Cluster and Triple cross hybrids
• Gossypium barbadense L
• Parental and interspecific hybrids
• Genome Biology
• Interspecific hybridization
• Whole genome duplication
• Genomic and organism diversification
• Long interspersed nuclear elements
• Combining ability
• Gene action
• Over environments
• Cotton over environments