Academic Journals Database
Disseminating quality controlled scientific knowledge

GENETIC CONTROL OF CORN SEEDS TOLERANCE TO HIGH DRYING TEMPERATURE

ADD TO MY LIST
 
Author(s): SOLANGE CARVALHO BARRIOS ROVERI JOSÉ | ÉDILA VILELA DE RESENDE VON PINHO | RENZO GARCIA VON PINHO | MAGNO ANTÔNIO PATTO RAMALHO | JOÃO LUIS DA SILVA FILHO

Journal: Revista Brasileira de Milho e Sorgo
ISSN 1676-689X

Volume: 3;
Issue: 3;
Start page: 414;
Date: 2004;
Original page

Keywords: desiccation: diallel: seeds | physiological quality

ABSTRACT
Seeds tolerance to high drying temperature is an important characteristic to be evaluated in the corn breeding programs. In this research the genetic control of this characteristic was studied by using the seed physiological characteristics. Twelve lines, previously selected were used, being six tolerant and six intolerant to high drying temperature, in a 6 x 6 partial diallel. The seeds were harvested by hand on corn ears with water content around 35% and dried at 45oC up to 8% water content. The physiological quality of the seeds was evaluated by germination test, cold test without soil, accelerated aging and electrical conductivity. The effects of the general (GCA) and specific (SCA) combining ability, and the reciprocal effects were significant for the high drying temperature tolerance. Inside the genotypical variability observed, the reciprocal effects occurred for 47% and 44,7% for the accelerated aging and electrical conductivity test, respectively, and for 49% for germination and cold tests. In the genetic control for the high drying temperature tolerance maternal effect will probably occur.
Save time & money - Smart Internet Solutions      Why do you need a reservation system?