Genetic diversity analysis of 19 coloured and white rice genotypes were conducted using 14 Simple Sequence Repeat (SSR) and 21 Insertion Deletion (INDEL) markers. Among them, polymorphic results were obtained for 9 SSR and 12 INDEL markers. The PIC values ranged from 0.36(RM484) to 0.78 (RM 167) and 0.50 (R9M20) and 0.81 (R9M10) for SSR and INDEL markers respectively. In the case of both SSR and INDEL markers highest genetic diversity was observed between Krishna Kamod (White pericarp) and IRST 1 (Red pericarp) whereas least genetic diversity was observed between Lal Kada (Red pericarp) and Krishna Kamod (White pericarp). However, it was also found that brown, black and red pericarp share more similarity among themselves. It was also observed that INDEL markers reveals greater diversity among the genotypes as compared to SSR markers which was indent from the low average similarity index observed in the former. On the whole INDEL markers were found to be more efficient than SSR markers for diversity analysis.
In the genus Momordiva thlee specms, M. charantia, M. balsamina and M. dioica, have been cytologically investigated. M. dioica has a more asymmetrical karyotype than the other two species.Meiosis in the three species is regular. The strictly monoecious M. charantia and M. balsamina show similarity in the range and frequency of bivalents and chiasmata, whereas M. dioica, a dioecious species, has fewer half chiasmata per chromosome. The evolutionary significance of perennial and annual habits along with allogamous and autogamous breeding systems is discussed. The incompatibility between 2n = 22 and 2n = 28 species in this genus is strongly indicated by the negative results of crossings between M. charantia and M. balsamina on one side and M. dioica on the other. The possible origin of M. dioica from M. charantia is discussed.
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