Abstract
Forty one wheat ( Triticum aestivum L. ) genotypes were studied for days to booting, days to heading, plant height at vegetative, plant height at maturity, days to 50% anthesis, days to 100% anthesis, flag leaf senescence, days to physiological maturity, peduncle length, effective tillers, spikelet’s length, grain per spike, biomass ,harvest index, sterility percentage, thousand grain weight and grain yield in random complete block design at terai, Nepal with the objective to identify superior genotypes after clustering them based on their genetic diversity in performance. Result of multivariable analysis revealed that 41 wheat genotypes formed four clusters. Cluster 4 and 2 had highest value of effective tiller, spike length, grain per spike, thousand grain weight, biomass, harvest index ,grain yield and lowest value days to heading, days to booting ,days to anthesis and sterility percentage. Cluster 3 had high days to booting, days to heading, days to 50% and 100% anthesis, days to flag leaf senescence and low in plant height at maturity, thousand grain weight ,harvest index and grain yield. Considering of multivariable analysis and other agronomic performance wheat genotypes HD 1982 and Pitic 62 may be utilized as high yielding genotypes in Terai condition of Nepal.
Highlights
Wheat is hexaploid (2n = 6x = 42) cereal crop belong to family Poaceae and genus Triticum (Bozzini, 1988)
The genetic diversity was observed in days to booting, days to heading, plant height at vegetative, plant height at maturity, days to 50% anthesis, days to 100% anthesis, flag leaf senescence, days to physiological maturity, peduncle length, effective tillers, spikelet’s length,grain per spike, biomass,harvest index, sterility,thousand grain weight and grain yield in the tested wheat genotypes
The presence of high level of diversity among the tested genotypes grouped into divergent clusters and supported by principal component indicated their suitability for further research can be done in this direction by selectiong superior genotypes.Theses genotypes could be very useful in developing commercial variety in terai condition of Nepal
Summary
Wheat is hexaploid (2n = 6x = 42) cereal crop belong to family Poaceae (grasses) and genus Triticum (Bozzini, 1988). Wheat is the world's most favored staple food. It is nutritious, easy to store and transport and can be processed into various types of food. Wheat is considered a good source of protein, minerals, B-group of vitamins and dietary fiber (Shewry, 2007). It is an excellent health-building food and used for preparation in bread, biscuits, confectionary products and noodles. Wheat accounted nearly 55% of carbohydrate consumed worldwide (Gupta et al, 1999)
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