Inheritance of Pigmentation of Rice

Inheritance of anthocyanin pigmentation in four plant parts such as internode, glume, lemma and stigma was studied in the cross Y-4 × K-44-l. Four genes were found to be responsible for pigment in stigma of which one was basic-complementary and the remaining three were complementary-duplicate. Two complementary factors specific for internode, glume and lemma determined colour in them. The basic complementary gene (A) was found to be common to all the four characters and thus showed pleiotropic effect on them. Linkage was detected between the specific genes for internode (Pin_a), lemma (Pr_a) and glume (Pg_a and the order of genes in the linkage group as suggested by the cross-over values is indicated as Pin-Pr-Pg. This group forms part of IV (“mp”) group of Misro et al. (1966) in which case Ps is an addition.