قوة الهجين لحاصل الحبوب و مكوناته باستخدام تضريب السلالة × الفاحص لسلالات من الذرة الصفراء

Abstract EN

A field experiment was conducted at Northwest of Ramadi.

Ten inbred lines by using Line×tester mating method.

On spring season 2018 seeds were planted, at an thesis crossing between inbreds and tester was done.

On fall season 2018 for crosses and parents using RCBD with three replications to evaluate and estimate heterosis.

The results of statistical analysis for these parents and their crosses were highly significant differences for all traits.

Genetic analysis shows superiority the inbred KR640 was best for plant height 183.16 cm, number of grain/row 34.34 grain and grain yield 148.43 g.

The tester A105 gave high value in grain yield was 145.62 g.

The cross (B73 × IK8) gave high leaves area 0.511 cm, no of grain per rows 39.21grain and grain yield 217.05 g.

The crosses (B73 × IK8) gave highly positive hybrid vigor to better parent and mid parent for no.

of grain per rows was % 28.21 and % 42.24 grain yield was % 79.10 and % 81.71.

we can conclude the possibility of using superior inbreeds to produce hybrids or use selection for it and produce synthetic varieties.