TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: The saccharification of polysaccharides in crop residues comprises:(a) extracting enzyme(s) prior to contacting the crop residues with the enzyme(s);(b) contacting the crop residues with the separated tissues containing the enzyme(s);(c) harvesting the seeds of the plant or descendant in a first operation and the crop residues in a second operation, where the first and second operations are carried out concurrently in a single step;(d) preferentially expressing the enzyme in the germ tissue of the seed at levels of at least 0.1 % of the total dry weight of the seed, fractionating the germ tissue from the seed in a commercial milling process and contacting the crop residues with at least the germ tissue of the seed;(e) fermenting the fermentable sugars under conditions favorable for ethanol production so as to produce ethanol; and(f) pretreating the crop residues prior to contacting the crop residues with the enzyme.The plant is bred with other plant(s) and descendants grown having seeds containing enzyme(s). At least one of the plants is transformed with a nucleotide sequence expressing protein that produces desired plant material.The cost-effective saccharification of polysaccharides in corn stover comprises:(a) transforming corn tissue with a nucleotide sequence encoding a polysaccharide-degrading enzyme, where expression of the enzyme is preferentially expressed in the germ of the seed;(b) culturing a plant from the corn tissue;(c) growing the plant and producing seeds from the plant or descendants of the plant, where the enzyme is expressed in the seed of the plant or descendant at least 0.1 % of the total dry weight of the seed;(d) harvesting the seeds of the plant or descendants in a first operation and the plant stover in a second operation, where the first and second operations are carried out concurrently in a single step;(e) fractionating the germ from the seed;(f) contacting the corn stover with a member from the group consisting essentially of the germ, an extract of the germ and cells of the germ tissue;(g) exposing the corn stover and the member to conditions favorable for the degradation of polysaccharides in the corn stover to produce fermentable sugars; and(h) fermenting the fermentable sugars under suitable conditions for production of ethanol.Preferred Enzyme: The polysaccharide-degrading enzyme is selected from endo-beta-1,4-glucanase, exo-beta-1,4-glucanase, beta-D-glucosidase, hemicellulases or pectinases. The polysaccharide-degrading enzyme is cellulase.Preferred Plant: The crop plant is preferably corn.