Abstract
A review paper. Contents of amylose and distributions of α-1, 4-chains of amylopectin were determined by two enzyme-chromatographic methods using the following endosperm starches of maize (Zea mays L.) and rice (Oryza sativa L.) with definite genetic backgrounds: amylose-extender (ae), dull (du), sugary-1 (su1), sugary-2 (su2) and waxy (wx) single-mutants, ae wx double-mutant and their normal counterpart of the inbred Oh43 maize; low-amylose (cultivar: Norin 8), high-amylose and sugary (cultivar: Kinmaze) mutants of rice, and waxy (wx) and nonwaxy rice (cultivar: Taichung 65) grown under different temperature conditions after anthesis. References on starches other than maize and rice studied in the author's laboratories were also cited.