The Evaluation of salt tolerance in three varieties of corn
2007
Dehqan, Elyas | Naderi, Ahmad
This study included two experiments were conducted in 2000-2001 for survey the effects of salinity water irrigation on yield and yield components in corn varieties. Experiments were conducted in a silty-clay soil in Ahwaz Agricultural Research Center. First experiment was conducted as a split plots and randomize complete blocks design in three replications. Main plots included in salinity levels 2, 4, 6 and 8dS/m and subplots included in three single cross hybrids of corn 704, 711 and 647. In other experiment the effects of saline water 8dS/m at growth stages included in planting to plant established (G1), flowering and pollination (G2) and grain filling (G3), were evaluated. The results of first expriment showed that there was very significant difference among water salinity levels for yield, thousand kernel weight, percentage of corn fertility and percentage of plants contain corn. The highest and lowest grain yeild obtained for salinity levels 2 and 8dS/m treatments respectively. Differences among varieties and interaction of treatments were significant for grain yield, and highest grain yeild obtained for 704 and 711 varieties on saline water 2dS/m. The results of other expriment showed that highest and lowest tolerance to irrigation with saline water on corn were G3 and G1 growth stages respectively. Consequently, hybrids 704 and 711 were sensitive than the 647, but based on obtained yield, suggest that 704 and 711 hybrids would be cultivated under these conditions.
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