Articles
INHERITANCE OF PLEATED FOLIAGE AND RED FLOWER IN IXORA
Article number
1025_8
Pages
61 – 64
Language
English
Abstract
Ixora, a popular woody bedding plant, has many flower colors.
Besides its bright flower color, there is another interesting mutant trait of pleated leaf.
To conduct a successful improvement program to create a hybrid of commercial interest, a breeder ought to have inheritance knowledge of the trait of concern.
A hybrid between a red flower with pleated leaf Ixora coccinea Bangkok Bow, a mutant, and a yellow flower with normal leaf Ixora chinensis Singapore Yellow was made.
Flowers of all progeny of the interspecific hybrid had orangish red color, with co-existence of red and yellow pigments.
However, the population segregated into two leaf forms, suggesting a qualitative trait.
The test cross ratio of 1:1 for normal leaf-to-pleated leaf was confirmed by Chi-square test.
Thus, the mutant leaf form is a dominant trait.
Besides its bright flower color, there is another interesting mutant trait of pleated leaf.
To conduct a successful improvement program to create a hybrid of commercial interest, a breeder ought to have inheritance knowledge of the trait of concern.
A hybrid between a red flower with pleated leaf Ixora coccinea Bangkok Bow, a mutant, and a yellow flower with normal leaf Ixora chinensis Singapore Yellow was made.
Flowers of all progeny of the interspecific hybrid had orangish red color, with co-existence of red and yellow pigments.
However, the population segregated into two leaf forms, suggesting a qualitative trait.
The test cross ratio of 1:1 for normal leaf-to-pleated leaf was confirmed by Chi-square test.
Thus, the mutant leaf form is a dominant trait.
Authors
S. Wannakrairoj, P. Meesakul
Keywords
Ixora chinensis, I. coccinea, interspecific, hybrid, chromosome, dominant
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