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Title

CORRELATION ANALYSIS OF GRAIN YIELD AND ITS COMPONENTS ON BREAD WHEAT UNDER NORMAL AND SOURCE RESTRICTION CONDITIONS

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Abstract

 IN THIS STUDY, CORRELATION ANALYSIS OF YIELD PER HECTARE, HARVEST INDEX, THOUSAND KERNEL WEIGHT, SPIKE WEIGHT, SEED NUMBER PER SPIKE AND SEED WEIGHT PER SPIKE AS INDEPENDENT TRAITS WERE CONSIDERED TO UNDERSTAND THE DIRECT AND INDIRECT EFFECTS OF VARIOUS TRAITS. AT NORMAL CONDITION SEED WEIGHT PER SPIKE (5.16), HARVEST INDEX (0.393) AND SEED NUMBER PER SPIKE (0.2711) HAD THE HIGHEST POSITIVE DIRECT EFFECTS ON GRAIN YIELD, AND THOUSAND KERNEL WEIGHT (-4.5483), HAD THE HIGHEST NEGATIVE DIRECT EFFECT ON GRAIN YIELD. UNDER SOURCE RESTRICTION CONDITION, SEED NUMBER PER SPIKE (7.018), THOUSAND KERNEL WEIGHT (5.483) AND HARVEST INDEX (0.893) HAD THE HIGHEST POSITIVE DIRECT EFFECT ON GRAIN YIELD, AND SEED WEIGHT PER SPIKE (-7.151) HAD THE HIGHEST NEGATIVE DIRECT EFFECT ON GRAIN YIELD. IN GENERAL (NORMAL AND SOURCE RESTRICTION CONDITIONS) SEED NUMBER PER SPIKE (0.497), THOUSAND KERNEL WEIGHT (0.456) AND HARVEST INDEX (0.450) HAD THE HIGHEST POSITIVE DIRECT EFFECTS ON GRAIN YIELD, AND SEED WEIGHT PER SPIKE (-0.247) HAD THE HIGHEST NEGATIVE DIRECT EFFECT ON GRAIN YIELD. ACCORDING TO THESE RESULTS, IT SEEMS THAT, SEED WEIGHT PER SPIKE, HARVEST INDEX AND SEED PER SPIKE, IN NORMAL CONDITION AND SEED PER SPIKE, THOUSAND KERNEL WEIGHTS AND HARVEST INDEX IN SOURCE RESTRICTION CONDITION CAN BE USED AS A STANDARD SELECTION METHOD IN BREEDING PROGRAMS.

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