Studies of variegated linkage group in Pharbitis Nil

Abstract

1. The existence of four genes, dragonfly 3 (d_g3), white flower (a₄), yellow 3 (y₃) and interaxial green 2 (i_g2) is recognizable through linkage studies. Together with a gene terminal 1 (t₁), these genes are added to the variegated linkage group.
2. The next thirteen linkages are dealt with in the present paper.
dragonfly 3(d_g3) - crumpled I (c₁)...... 35.2 percent
” - variegated 1 (v₁)...... (38.7 “ 39.2 “)- Blown 1 (B₁)...... 21.9 “
” - white flower (a₄)...... 25.4 “
” - contorted (c_d)...... 39.3 “
” - terminal 1 (t₁)...... 34.2 “
polymorphic (p_y) - yellow 3 (y₃)...... 37.7 “ 41.4 “
” - interaxial green(i_g2)...... 24.6 “
terminal 1 (t₁) - variegated 1 (v₁)...... 44.3 “ 39.2 “
contorted (c_d) - white flower (a₄)...... (30.1 “ 35.3 “)
yellow 3 (y₃) - Blown 1 (B₁)...... 44.9 “
polymorphic (p_y) - Blown 1 (B₁)......25.1 “
yellow 3 (y₃) - interaxial green (i_g2)......37.9 “
3. The linkage studies whick have been done up to the present time, confirm that the number of genes included in the variegated linkage group are twelve including the four genes recently reported by author. By the present report five more genes are added to the same group. Consequently, the variegated linkage group includes seventeen genes altogether.