In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called
(a) selection of superion recombinations
(b) cross-hybridisation among the selected parents
(c) evaluation and selection of parents
(d) germplasm collection
(d) It is called germplasm collection or the collection of variability. Selection of superior recombinants means selection of the best plant from the whole lot by visual examination and collecting their seeds for growing in field. Cross hybridisation is the method of combining the characters of different plants together. The selection and evolution are the main steps of hybridisation.