Doctoral Thesis / Dissertation from the year 2012 in the subject Biology - Genetics / Gene Technology, Tamil Nadu Agricultural University (Madurai Agricultural College and Research Institute), course: Ph.D, language: English, abstract: An investigation in rice (Oryza sativa L.) was carried out subjecting six 'lines' and 15 'testers' crossed in a Line x Tester mating design to estimate gene action, combining ability and heterosis for yield and drought tolerant traits under aerobic condition. The 21 parents were also surveyed using SSR markers. From the Line x Tester analysis, the hybrids...