Response of Wheat Genotypes Having Different Stature to Early Period Drought Stress
Response of Wheat Genotypes Having Different Stature to Early Period Drought Stress
Mubeen Zahra1,2, Muhammad Nawaz3, Muhammad Umer Chattha4, Imran Khan4, Muhammad Bilal Chattha5*, Muhammad Ashraf Bhatti6, Abdul Rehman4, Faryal Ahmed4, Faran Muhammad4, Mina Kharal7 and Muhammad Umair Hassan4
ABSTRACT
Drought is serious constrain to global food production and shortage of water at any stage of plant life can be damaging for growth, physiological processes and yield. Thus, present study was executed to determine the impact of drought on growth and yield of different wheat cultivars. The study was comprised of early drought treatment such as I0 (control), I1 (fist irrigation 30 days after sowing), I2 (first irrigation 45 days after sowing) and I3 (first irrigation 60 days after sowing) and wheat cultivars Faisalabad-2008 (standard height and low tillering), Td-1 (low height and low tillering) and Galaxy-2013 (standard height and high tillering). The results indicated that maximum leaf area index (LAI), crop growth rate (CGR), tillers (356.2 m2), spikelet/spike (18.61), grains/spike (49.53), 1000-grain weight (44.4 g), biological yield (12.95 t ha-1) and grain yield (4.61 t ha-1) was recorded in control whereas lowest value for these parameters were recorded when first irrigation was applied 60 days after sowing. Among cultivars Galaxy-2013 performed well maximum LAI, CGR, plant height (83.42 cm), tillers (358 m2), spikelet/spike (18.61), grains/spike (44.97), 1000 seed weight (43.4 g) and grain yield (4.42 t ha-1), whereas Td-1 performed poorly with minimum LAI, CGR, plant height (71.10 cm), tillers (331 m2), spikelet/spike (17.64), grains/spike (35.48), 1000 grain weight (35.50 g) and grain yield (3.14 t ha-1). In conclusion cultivar Galaxy-2013 with standard height and high tillering can be grown in drought stress areas to get maximum wheat productivity.
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