engleski

Hybrid maize seed yield in correlation with distance of mother and father parent components

Experiment work conducted during 1996 and 1997 at the field experiment trial of Agricultural Institute in Osijek showed connection between some yield components of single cross maize hybrids with distance between mother and father components during pollination. The investigation were conducted on three different hybrids in the first, second and third row of mother components distantly from father components. Results of investigation showed that years of investigation (A) had had statistically high significant influence (P<0, 01) on number of seed per row of ear in hybrid OSSK 247, and statistically significant influence (P<0, 05) in hybrids OSSK 382 and OSSK 553. In all three hybrids in the second year of investigation greater number of seed per ear row than in the first year was achieved. Years of investigation (A) had had statisticaly high significant influence (P<0, 01) on seed yield per ear in all examined hybrids. In the second year of investigation average seed yield per ear had the greater than in first year for 1, 3 to 3, 0 g of seed per ear. Distance between mother and father components (B) had statistically high significant influence (P<0, 01) on number of seed per row in all examined hybrids. Number of seed in ear row was the highest in the first mother&#8217; s row, closest to father component (24, 75 seeds in hybrid OSSK 247 ; 30, 90 seeds in hybrid OSSK 382 and 30, 97 seeds in hybrid OSSK 553). The lowest number of seeds had mother&#8217; s row that had greatest distance from father component (10, 14 seeds in hybrid OSSK 247 ; 10, 65 seeds in hybrid OSSK 382 and 15, 45 seeds in hybrid OSSK 553). Distance between mother and father component (B) had influence on seed yield per ear. The greatest yield per ear had mothers row closest to father (105, 43 g of seed in hybrid OSSK 247 ; 107, 01 g of seed in hybrid OSSK 553 and 111, 31 g of seed in hybrid 382). The lowest seed yield per ear had mothers row that had greatest distance from father component (34, 58 g of seed in hybrid OSSK 247 ; 45, 07 g of seed in hybrid OSSK 382, and 57, 27 g of seed in hybrid OSSK 553). Differences in seed yield per ear between mothers rows in all three hybrids was statisticaly high significant (P<0, 01).

maize (Zea mays L.); seed production; single cross; distance; ear; yield components; yield

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