The barley mutant’s genetic variability of some important quantitative characters

Barley (Hordeum vulgare L.) is an important cereal crop of rabi season in the country. It has got the special significance being cultivated in almost all parts of the world. It is a major source of food for a large number of people living in the cooler and semi-arid area of the world where other cereal is poorly adapted. Barley has been known for a long time for food and it has been under cultivation since ancient time. Barley originated in Abyssinia which is the principal centre of its origin because of wide diversity is present there in different wild form of barley. According to some other investigators South Eastern Asia, particularly China, Tibet and Nepal is the centre of origin of barley. A field experiment was undertaken during wet seasons of 2008 to evaluate the response of Important Quantitative Characters in Mutant Barley. The experimental was laid out on a sandy loam soil of Post graduate College Ghazipur on farm, to applied fertilizer for rationalizing the use of Nitrogen (N), Phosphorus (P) and Potassium (K) fertilizers by Basal application and real time management respectively for making them more suitable for Barley Crops. The experiment involved twenty newly developed barley mutants and two mother cultivars, were the materials of the present research work. The mutation research work using chemical (Ethyl methanesulfonate (EMS) and Hydroxylamine (HA) and physical (Gamma rays) mutagens on barley cultivars. In progress in the Dept. of Genetic and plant Breeding, P.G. College Ghazipur. The EMS is a colorless liquid, alkylating agent. It’s commonly used of a chemical mutagen in experimental genetics to change the various organisms of plant cell. The maximum days to 50% flowering was observed in mutant K-551 and minimum was in Mutant K-925 had the minimum days to maturity and G-30-5 and K-50-50 had the maximum days to maturity. Number of tiller was the maximum K-40-72 and the minimum K-226. The plant height was observed maximum in mutant KH3-63 and minumum in mutant K-882. The maximum number of seed per spike was found in mutant Gitanjali and minimum in mutant K-925. Ear length was the maxi-mum in mutant K-40-35 and the minimum in mutant K-882. The maximum 100 seed weight was observed in mutant KE-3-75 and the minimum in mutant K-551. Biological yield per plant was the maximum in mutant K30-88 and the minimum in mutant K50-50. Harvest index was maximum in mutant K-50-35 and minimum in mutant K-55. Seed yield per plant was the maximum in K-50-50 and the minimum in K-55. Genotypic coefficient of variability GCV was the highest for the biological yield/plant, followed by harvest index, seed yield/plant, plant hight, 100 seed weight, number of seed/spike, days to 50% flowering, number of tillers, Ear length, days to maturity.