دراسة البنية الوراثية في البزاليا باستخدام تصميم Diallel بطريقة Hayman للصفات النوعية

Abstract EN

This study was carried out during (2010/2011) growing season in the Vege- tative Field Research, Department of Horticulture and Landscape Design, College of Agriculture and Forestry, Mosul University.

The aim study of this research was to study Diallel Analysis using Hayman Method to study genetic Architecture of pod and qualitative charachters in Peas (Pisum sativum L.).

Seven genetic line peas were used in this study namely (1=G.S.C.22763 , 2=P.S.305301572 , 3= Thomas Laxton , 4= Solara , 5=Pitet Provael , 6= Duna Pea , 7= English).

These genotypes were crossed in all possible combinations (Full Diallels Cross).

The seeds of seven parents and their F1's including reciprocals.

Using Randomized Complete Block Design with three replication .

The following traits were studies : length and diameter of pod (cm), the percentage of dry matter in seed (%), total soluble solid (T.S.S) , percentage of protein in seed (%), and percentage of total sugar in seed.

Results showed that the general combine ability (GCA) was significantly for all characters, while the specific combine ability (SCA) was significantly for the pod length.

The value of (a) was significantly for all characters , where over the b1 , b2 , b3 was significantly for pod length, the percentage of dry matter in seed and total sugar in seed, and length and diameter of pod respectably.

The value of (c) was significantly for all characters except for pod diameter and total sugar in seed.

The value of (d) was significantly for the pod length, the percentage of dry mater and total sugar in seed.

The √ H1/D was more than one for total sugar in seed, while the (p¯q¯) was les than 0.25 for all characters.

The KD/KR was more than one for length and diameter of pod, the percentage of dry matter and total sugar in seed.

The broad sense heritability was significantly for all characters, where over the regression between (Wr/Vr) showed that it was cut the head line over the original point except the total sugar in seed cut it's under the original point.