وراثة الحاصل و مكوناته و الصفات النوعية في الهجن الفردية للذرة الصفراء (Zea mays L.)‎

Abstract EN

Six inbred lines of maize namely (1) DP 198, (2) WA 245,(3) HK 258,(4) SA 266 ,(5)AH 401 and (6) IK 58, were used in diallel cross.

The seeds of inbred lines and its single cross hybrids were grown in an experiments using randomized completely block design (RCBD) with three replicates.

The parents and F1 were significantly differed at 1% for number of days to silking and, tasselling , plant height, ear diameter and length, number of rows per ear, number of grains per ear, 300 - Kernel weight, yield per plant and protein oil percentage.

Ten hybrids showed a significant desirable heterosis (deviation of F1 from mid parent and higher parent) for most studied traits.

The mean squares of general and specific combining ability were highly significant for all traits except protein percentage for general combining ability.

The additive and dominance variances were differed from zero for all studied traits except for additive variance of protein percentage , The broad sense heritability values were high for all studied traits .

Narrow sense heritability were moderate for number of days to silking , ear length , rows per ear, number of grains per ear, 300 grain weight and oil percentage and low for number of days to tasselling , plant height, ear diameter , yield per plant and protein percent.

The average degree of dominance was higher than one for all traits.