The proceeding of the 8Ih ISB:214-217(2001) Genetic Analysis of Morphological Characteristics in Common Buckwheat (Fagopyrum esculentum Moench)

Common buckwheat is an allogamous plant species due to heterostylic self-incompatibility. Discovery of the homostylar self-fertilizing wild species Fagopyrum homotropicum renders self- fertilizing hybrids between tliem to be studied. Several morphological traits were chosen in order to test the genes responsible. Homostyly behaves as a dominant gene segregating in 380 homostyle: 137 heterostyle (X2 3:1 = 0.58). The determinant growth characteristic is recessive and segregates 147 normal: 42 determinant (X2 31 = 0.86). Pink and white flower colour segregates in 63 pink: 35 white (X2 97 = 0.18) indicating a complementary gene interaction. Winged-seed characteristic segregates into 80 winged: 68 non-winged individuals (X2 97 = 0.29) fitting a complementary gene interaction. A mutant trait, vestigial petals (Vp), segregates into III vestigal petals: 99 normal (X2 97 =0.97)