GENETIC POTENTIAL AND VARIABILITY FOR MORPHO-YIELD TRAITS IN DURAM WHEAT (TRITICUM TURGIDUM L. VAR. DURUM)
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 12
Abstract
Genetic improvement in wheat is prerequisite for increasing productivity on sustainable basis and feeding over increasing population. In the present study a set of eleven durum lines selected from IDYN (International Durum yield nursery) received from CIMMYT along with check were evaluated at Cereal Crops Research Institute, Pirsabak Nowshera during 2011-12. Highly significant differences (P≤0.01) were observed among the selected durum wheat lines for all the studied traits. Days to heading, days to maturity, plant height, spike length, Spikelet spike-1, 1000 kernel weight and grain yield varied from 112 to 126 days, 151to 163 days and 85 to 100 cm, 6.3 to 9.2, 18 to 23, 37 to 53g and 1667 to 2373 kg ha-1 respectively. Based on mean performance for plant height, days to heading and days to maturity DWL-2 was found best as it was short stature, headed and matures earlier. DWL-10, DWL-3 and DWL-8 were found best for spike length, Spikelet spike-1 and 1000 kernel weight respectively. Mean comparisons of grain yield showed that DWL-9 line had the highest grain yield (2373 kg ha-1) than the other lines and check (1667 kg ha-1). High genotypic and high heritability were observed for all the studied traits. Heritability estimates in broad sense for days to heading, days to maturity, plant height, spike length, Spikelet spike-1, 1000 kernel weight and grain yield was 0.91, 0.93, 0.68, 0.74, 0.76, 0.78 and 0.75 respectively. Estimates of correlations between traits indicate those days to heading showed positive correlation with days to maturity (0.81), plant height (0.82). Positive correlation of spike length with Spikelet spike-1(0.80) and 1000 kernel weight (0.51) and grain yield (37) was observed. High broad sense heritability estimated for all the traits showed that family selection method could be used instead of individual selection in the breeding programs for improving grain yield and its components.
Authors and Affiliations
KHILWAT AFRIDI, GULZAR AHMAD, MUHAMAMD ISHAQ , IBNI ANIN KHALIL, IRFAN AHMAD SHAH, MUHAMMAD SAEED AND NAZIR AHAMD
Keywords
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