%0 Journal Article
%T Rendimiento de grano y forraje en h¨ªbridos de ma¨ªz y su generaci¨®n avanzada F2
%A Gayt¨¢n-Bautista
%A Rodolfo
%A Mart¨ªnez-G¨®mez
%A Ma. Isabel
%A Mayek-P¨¦rez
%A Netzahualc¨®yotl
%J Agricultura t¨¦cnica en M¨¦xico
%D 2009
%I Scientific Electronic Library Online
%X to cope with the high seed cost of maize hybrids, small-scale farmers use f2 and f3 seed. the objective of this study was to determine the effect of using seed from self-pollinated hybrids on grain and forage yields of maize hybrids. the study was conducted under irrigated conditions at tepezal¨¢ and pabell¨®n de arteaga, aguascalientes, and calera de victor rosales, zacatecas, mexico during 2001. twenty-two commercial hybrids and their respective advanced f2 generation were sown under a split split plot arrangement in a complete random block design with three replications. grain and forage yield, plant height, days to masculine and feminine flowering and husk height were determined. a profit/cost analysis was performed. on average, the use of f2 seed diminished 22% grain and 8% forage yields. most of the hybrids and their advanced generations did show grain and dry forage yield stability across locations. due to generational advance, the profit/cost ratio diminished 9% for grain production and increased 11% for dry forage production. hybrids sb-302 and as-948 showed high grain and dry forage yields, less reduction with the advance of generation and high profit/cost ratios.
%K zea mays l.
%K f1 and f2 hybrid generations
%K profitability.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S0568-25172009000300006&lng=en&nrm=iso&tlng=en