Morphological and Molecular Diversity Analysis Of Different Cultivars of Rice (Oryza Sativa L.)

Abstract

THESIS TOPIC: "Morphological and Molecular Diversity Analysis of Different Cultivars of Rice(Oryza sativa L.)" Rice is an important staple cereal crop in the world. It is the important source of carbohydrates, protein, fats and vitamins. India is the second largest rice producer, accounting for 22.25% of the world's rice production. India has the largest average under rice with a production of about 106.90 million tones (record) in the year 2013- 14. The present study investigates the genetic diversity among the different rice genotypes. Mean performance of selected twenty rice genotypes for eleven morphological traits, physiological study for photosynthetic rate and chlorophyll content. The mean of photosynthetic rate range from 3.17 micro-mol for (Madhukar), to 9.35 micro-mol for (WAS-272-BB5-H5), Chlorophyll content range from 36.53 units for {TOX 3440-17-I -1-l-1-I) to 87.33 units for (IR77734-93-2-3-2). On the basis of Mahalanobis D2statistics analysis all twenty genotypes divided in five clusters. Molecular analysis out of 159 alleles, 30 alleles showed polymorphic with an average number of alleles 3 per locus, where as 129 bands where monomorphic. All the marker showed specific type of banding pattern in different genotypes and categerized the genotypes under study in to four groups