COMBINING ABILITY STUDIES FOR YIELD AND OTHERS QUALITY TRAITS OF SUNFLOWER (HELIANTHUS ANNUUS L.) BY USING LINE ?— TESTER ANALYSIS

摘要

The current trial was conducted in the field area of Plant of Breeding and Genetics, University of Agriculture, Faisalabad, Punjab, Pakistan during 2018-19. Total five female lines (PBG101,102,103,104 and105) were crossed with three testers (PBG-106,107 and 108) to produce fifteen crosses. The female lines were crossed for production of hybrids in first season. Then these sunflower hybrids with their parents were sown in randomized complete block design (RCBD) using three replications in subsequent season for checking their performance. Then combining ability (GCA and SCA) of different yield contributing and quality related traits was checked. Among the lines (PBG-105) had shown highly considerable negative GCA for plant height, PBG-103 had shown the significant general combining ability (GCA) for head diameter, PBG-104 had shown the highest GCA effect for total achene yield/plant, PBG-104 had maximum oil content. Among the selected testers PBG-106 had highly considerable GCA for head diameter, PBG-108 had the highest GCA effect for oil contents and PBG-107 had maximum GCA for protein contents. Among the crosses PBG-101×PBG-107 had shown the highest negative specific compbining ability (SCA) for plant height (-15.71 cm), PBG-101×PBG-108 had shown the highest SCA for stem girth (0.42 cm), PBG-104×PBG-108 had shown the highest SCA for head diameter (1.29 cm) PBG-103× PBG-107 had shown the highest SCA for oil contents (1.63%) and PBG-104×PBG-108 had shown the highest SCA for protein contents (1.22%). Hybrids showing better results would be used for improvement of local hybrids .