Chemical composition and nutritional properties of a sugary-1/opaque-2 (su1/o2) variety of maize (Zea mays L.)

Induced Mutations in Plant Breeding

“…N-retention and protein digestibility are similar to o 2 (Sgarbieri et al 1977). This seems to be due to the higher proportion oflysine as compared to the 0 2 genotype.…”

“…Protein percentages range between 10.3% and 11.4%. Results have been given by Alexander et al (1969);Pollacsek (1970); Salamini et al (1970); Annapurna and Reddy(1971); Pollacsek et al(1972);Zima et al(1972);Paez (1973); Rakha et al (1974);Vasal (1975); Ottaviano and Camussi (1975); Bjarnason et al (1976Bjarnason et al ( , 1977; Sgarbieri et al (1977); Loesch et al (1978); Misra (1978); Tsai et al (1978); Klein et al (1980). This variability gave rise to optimistic expectations with regard to opaque genotypes with satisfying yielding capacities.…”

Inherited characteristics of composition and protein nutritive value of a new cultivar of maize (Nutrimaiz) in two stages of maturity

“…The amino acid composition of the whole grain flours of all four cultivara, in the two stages of maturity, is shown in Table IV. The amino acid patterns of these cultivare at full maturity have already been reported by Sgarbieri et al (1977), and determinations were repeated in the present investigation for comparative purposes. The lysine contents decreased with maturation for the cultivara Maya Normal and Priamex Sweet, whereas it remained essentially constant at a higher level in the Maya Opaque-2 and in Nutrimaiz.…”

Macronutrients in Corn and Human Nutrition

“…Because of the reduction in the biosynthesis of zein, a nutritionally inadequate protein, kernels of those corn mutants have higher lysine and tryptophan contents (Mertz and others ; Sodek and Wilson ; Prasanna and others ). Consequently, the mutants have nutritionally desirable amino‐acid profiles, despite slightly lower total protein contents (Sgarbieri and others ; Hasjim and others ). Corn mutants of o2 , fl2 , and QPM have shown to improve the nitrogen balance and promote the growth performance of animals (Bressani and others ; Delgado and Saldivar ).…”