Everything you need to know about synthetic and composite varieties of crops. Q. 1. What is inbred line? Ans. In allogamous species, a true breeding line obtained by continuous inbreeding is called inbred line. Main features of inbred line are given below: (i) It is relevant to cross pollinated species (ii) It is true breeding (iii) It is homozygous and [...]
Everything you need to know about doubled haploids in crop improvement ! Q. 1. What do you mean by doubled haploids? Ans. Doubled haploids refer to the diploid lines which are obtained by doubling the chromosome number of a haploid line by colchicine treatment. Such condition is referred to as doubled haploids. Q. 2. What are main features doubled haploids? [...]
Everything you need to need about breeding for disease and insect resistance ! Q. 1. What is disease? Ans. In crop plants, various disorders caused by pathogens are called disease. Q. 2. What is pathogen? Ans. Various disease causing organisms such as fungi, bacteria, viruses and mycoplasma refer to pathogen. Q. 3. What is pathogenicity? Ans. Ability of a pathogen [...]