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 know about crop genetic resources and centers of diversity ! Q. 1. What do you mean by plant genetic resources? Ans. Genetic material of plants which is of value as a resource for present and future generations of people is referred to as plant genetic resources. Q. 2. What do you mean by gene pool? Ans. [...]
Any given volume, V of soil (Fig. 3.1) consists of: (i) Volume of solids Vs (ii) Volume of liquid (water) Vw, and (iii) Volume of gas (air) Va The porosity n, the volumetric moisture content w and the saturation s are defined as N = Vv/V Obviously, w = s.n. Further, if the weight of water in a wet soil [...]