DUS Testing of JNPT Lines of Rice using Morphological and Quality Descriptors Choudhary Pratibha*, Mishra D.K., Koutu G. K., Singh S. K., Tiwari Akanksha Department of Plant Breeding and Genetics, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, (M.P.), 482004 *email: prratibha08@gmail.com
Online published on 23 December, 2016. Abstract On the basis of DUS descriptor, 180 JNPT lines derived from Indica x Japonica sub-species crosse of rice (Oryza sativa L.) with five checks were characterized for different morphological and quality traits. A significant amount of variation was displayed for most of the traits examined. The result revealed that maximum variation was recorded indecorticated grain shape (in lateral view) followed by endosperm content of amylose, lemma and palea colour, panicle attitude of branches, leaf pubescence of blade surface, flag leaf attitude of blade (late), gelatinization temperature through alkali spreading value, flag leaf attitude of blade (early), panicle distribution of awns, spikelet density of pubescence of lemma, panicle exsertion, panicle curvature of main axis, panicle secondary branching, culmattitude, panicle awns and leaf intensity of green colour. The variation found in varieties will be utilized for the selection of specific lines/varieties for protection, conservation and utilization for further breeding programme. This study will strengthen rice breeding programmes for the development of new varieties with specific traits resulting sustain for long time in seed chain. This also provides help to isolation of the specific variety in the mixture of other lines. Top Keywords DUS testing, Morphological, Descriptor, JNPT lines, Seed chain. Top |