Abstract:
The investigations were carried out at Faisalabad, Pakistan during spring 1984 and 1985. In all the influence of 12 chemical characters on the shootfly resistance of five maize (Zea mays L.) cultivars was sorted out, with reference to the number of their non- infested plants, which were considered to be a direct measure of this phenomenon. The comparative correlation of changes in various chemicals with those in the number of non- infested plants revealed that the resistance of maize-cultivars tested against the shootfly (Atherioona spp.) maggots was, on chemical grounds, determined by the changes in the moisture-contents, crude-proteins as well as by those in the total ashes. The changes in the former two of them, were found to be negatively correlated to the Atheriaona-resistance, as against the latter, which was positively correlated to it. The above character trio accounted, on the whole, for 100 % of the changes in resistance, under review, 83% of the above contribution, came solely through the changes in the moisture- contents. Every unit decrease in this character is likely to increase shootfly resistance in maize to a tune of 29.82 units. The above contribution of the moisture contents is independent of the contribution of other chemical characters. The crude proteins accounted for only 16.98% of the changes in the resistance of maize-cultivars. On the basis of above conclusions, the various fundamental as well as applied, implications of these investigations were also impressed upon.
Page(s):
107-119
DOI:
DOI not available
Published:
Journal: Gomal University Journal of Research, Volume: 12, Issue: 2, Year: 1992