ATATÜRK ÜNİVERSİTESİ KOYUN SÜRÜLERİNDE BETAGLOBULİN POLİMORFİZMİNİN GENETİĞİ VE KANTİTATİF KARAKTERLERLE BAĞLANTISI I. GENETİK ANALİZLER

Yıl 1987, Cilt: 18 Sayı: 1-4, - , 01.01.2011

Yusuf Vanlı

Öz

.Özet
Starch-gel elekîroforez tekniği ile belirlenen TfA,TfB,Tfu,TfT>, ve TfE ergenlerinin
sıklıkları, sırasıyla Morkaramarida 0.341,0.161,0.222,0.266,0.010; Merinosuz
0.160,0.175, 0.277, 0.340, 0.048; ÎvesVde 0.269,0.355,0149,0.167, 0.060
olmuştur. Transferrin genlerinin ırklar arasındaki dağılışları önemli derecede,
(P<0.001) farklılık göstermiştir (kikare: 79.1, s. d: 8). Gen sıklığının koyun yaşma
bağımlılığı önemsiz olmuş ve yapılan ayıklamanın beta-globulin gen yerini etkilemediği
anlaşılmıştır.
Sürülerde 4'ü homozigot (TfAjTfA,TfBjTf*, Tf*/7JM,Tfn¡Tfn,) ve 10'u
h eterozigot (TfTf*, Tf-* / 77"1M> TfA/ TfD, TfA/ TfE, Tf*! TfM, Tf*\ Tfn, Tf*! TfMl Tfv, TfMi TfE, Tf°! TfE,) olmak üzere toplam 14 genotip ortaya çıkarılmıştır.
Bunlardan TfMITfE tipi Morkaraman ve ÎvesVde, TfAjTfE tipi Merinos'da,
TfEjTfE tipi ise ırkların hiçbirinde görülmemiştir.
Beta-globulin fenotiplerinin ampirik ve teorik dağılışları arasındaki farklar
Morkaraman {kikare:42.2) ve Merinos*da (kikare: 30.7) çok önemli (P<0.001);
ÎvesVde (kikare: 5.0) önemsiz olmuştur. Yabancı damızlıklara kapalı sürüler
içinde hat geliştirilmiş olması Hardy-Weinberg dengesinden uzaklaşmanın nedeni
olarak görülmüştür.

Summary
Genetics of Beta-Globulin Polymorphism and Its Association With Quanti
tatve Characters in Atatürk University Flocks: I. Genetic Analysis
87
The frequencies for TfA,TfB,TfM,TfD and TfE which were typed by starch
gel electrophoresis were 0.341,0.161,0.222,0.266,0.010 in Morkaraman; 0.160,
0.175,0.277,0.340,0.048 in Merino and 0.269,0.355,0.149,0.167, C.060 in Awassi
ewes, respectively. The distribution of transferrin genes differed significantly
(P<0.001) between the three breeds (chi-square; 79.1; d. f: 8). Gene fiequencies
were significantly independent from the age of ewe arid culling did not affect
beta- globulin locus.
4 homozygous (TfA/TfA,TfB/TfB, TfM/TfM, TfD/TfD) and 10 heterozygous
(TfA/TfB,TfA/TiM,TfA/TfD, TfA/TfE,TfB/TfM,TfB/TfD, TP/Tf6, TfM/TfD, TfM/TfD/TiE) were determined in the flocks. The TfM/TfE, genotypes were not found
in Morkaraman and Awassi ewes, while the TfE/TfE type was not observed in
any of the breeds.
Differences between empirical and theoretical distributions for beta-globulin
phenotypes were significant (P<0.001) in Morkaraman (Chi-square: 42.2) and
Merino (ch'-square: 30. 1) but notsignificant in Awassi (chi-square: 5.0). Significant
departure from Hardy-Weinberg equilibrium was probably due to the facts
that the flocks were closed to gene flow and the two inhered lines had been developed
in Morkaraman and Merino ewes.

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