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GENETIC DIVERSITY FOR MORPHO-GENETIC TRAITS AND HORDEIN SEED PROTEIN IN BARLEY GERMPLASM

Ahmad, Zaheer (2005) GENETIC DIVERSITY FOR MORPHO-GENETIC TRAITS AND HORDEIN SEED PROTEIN IN BARLEY GERMPLASM. PhD thesis, University of Arid Agriculture, Rawalpindi.

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Abstract

Barley (Hordum vulgare L.) germplasm comprising of 133 accessions collected from Pakistan was evaluated in field and Laboratory for two years. Fifteen quantitative traits viz, days to heading, days to maturity, grain filling period, number of productive tillers per plant, peduncle length, flag leaf area, plant height, spike length, number of spikelets per spike, number of grains per spike, biomass per plant, grain yield per plant, 1000 grain weight, harvest index (%) protein (%) and two qualitative traits viz growth habit and awn color were recorded. Significant amount of genetic variation was observed in most of the plant traits whereas spike length showed less variation. The magnitude of genetic variation for qualitative traits like growth habit, awn color was reasonable. The analysis of correlation coefficient among the quantitative traits revealed that yield per plant showed significant and positive correlation with 1000 grain weight and harvest index Biomass per plant showed significant positive association with grain yield per plant 1000 grain weight. Number of spikelets per spike had positive relationship with number of grains per spike while it had significant negative correlation with 1000 grain weight. High magnitude of the quantitative traits revealed that there were less environmental effects on the traits over the years suggesting a need to evaluate the barley accessions in different agro-ecological regions rather than over the years. The evaluation on the basis of regions showed that accessions from Northern Areas performed better for early heading days, more grain filling period, broader leaf area, short plant height, more number of grains per spike and high protein whereas long peduncle length was found in accessions from Baluchistan. NWFP material was good for harvest index, 1000 grain weight and tall stature.

Item Type:Thesis (PhD)
Uncontrolled Keywords:barley (hordum vulgare l.) germplasm, days to heading, days to maturity, grain filling period, number of productive tillers per plant, peduncle length, flag leaf area, plant height, spike length, number of spikelets per spike, number of grains per spike, biomass per plant, grain yield per plant, 1000 grain weight, harvest index (%) protein (%), hordein seed
Subjects:Biological & Medical Sciences (c) > Biological Sciences(c1) > Biology (c13)
ID Code:408
Deposited By:Mr. Muhammad Asif
Deposited On:04 Aug 2006
Last Modified:04 Oct 2007 21:00

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