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EVALUATION OF SEMI-DWARF WHEAT (TRITICUM AESTIVUM L.) GENOTYPES FOR YIELD AND ITS COMPONENTS

SAIMA ARAIN, K.D. JAMALI, M.H. NAQVI, A.M. SOOMRO, M.A. ARAIN AND SYED ASHRAF ALI

Abstract: Yield and its component studies were conducted for semi-dwarf F₆ wheat breeding material.  Sixteen genotypes and two checks viz., Sarsabz and Kiran-95 were selected for these studies. The data recorded for days to heading, plant height, spike length, number of spikelets per spike, number of grains per spikelet, number of grains per spike, grain yield of main spike, 1000-grain weight, and plot grain yield.  In this yield comparison line 16 had the highest grain yield than the remaining genotypes and varieties. Subsequent lines which had the higher grain yields were 9, 7, 13, 15, 1 and 5. The possible reasons for high grain yield in line 16 could be due to mid-maturing, tall-dwarf plant height, increased number of grains per spike, higher main spike grain yield and increased number of grains per spikelet than the check variety Sarsabz.  The high grain yield in line 9 could be due to increased number of gains per spike and spikelet and higher main spike yield.  The high yield in line 7 could be due to increased grain weight.  The high grain yield in line 13 may also be due to its increased 1000-grain weight (39.84 g). High grain yield in line 15 may be due to its increased spikelet fertility.  High grain yield in line 01 may be due to its earliness in days to heading, higher main spike grain yield and increased spikelet fertility. The high grain yield in line 5 may be due to its earliness and tall dwarf plant height.

Nuclear Institute of Agriculture (NIA) Tando Jam, Pakistan

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