Estimativa de parâmetros genéticos de caracteres da planta e da qualidade do grão em uma população de milho opaco (Zea mays)

Tosello, Geraldo Antonio; Souza, Cláudio Lopes de; Geraldi, Isaias Olívio

doi:10.1590/s0071-12761987000100033

Cited by 1 publication

(1 citation statement)

References 5 publications

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variation for protein content, measured as percentage, was higher than for oil content. The values were superior to those obtained by Zimback (1985) for two subpopulations of Braquítico-Opaco VD Composite (0.57 and 0.55, data in percentage) and by Tosello & Geraldi (1980) for the population ESALQ VD Opaco (0,31). This fact, associated to the detection of some families with higher protein content than the best check, indicates a great potential for protein improvement in this population.…”

Section: Scientia Agricolacontrasting

confidence: 73%

Potential of the ESA23B maize population for protein and oil content improvement

Mittelmann

Filho²,

Lima

et al. 2003

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Among the traits that may add commercial value to maize (Zea mays L.), those related to nutritional quality, specially protein and oil content, are of great interest to the feed industry. The objective of this work was studying the variability of protein and oil content, as well as yield, in a group of maize testcrosses. One hundred and twenty S1 families of the ESA23B maize population were crossed with two testers, an open-pollinated population (BR108) and an exotic line (CML269). Testcrosses were evaluated at two locations under a completely randomized block design with three replications. Ear and grain yield, protein and oil content were evaluated. The three-way interaction location x tester x progeny was significant for all traits, except for oil content. Differences among progenies were detected for all traits. Testcross means varied from 8.40% to 11.82% for protein content and from 3.77% to 5.10% for oil content. Hybrids with similar or superior means to the best check were identified for protein content, ear yield, and grain yield. Estimates of the interpopulation additive variance ranged from 0.553 to 1.124 for protein content; 0.034 to 0.057 for oil content (percent data); 132.13 to 521.74 for ear yield and 116.33 to 381.73 for grain yield (data in grams per plant). The population ESA23B can potentially be improved for all the traits studied. Associations among traits were weak, thus concomitant selection of quality and yield can be feasible.

show abstract

Section: Scientia Agricolacontrasting

confidence: 73%