VARIABILITY ANALYSIS, PHENOTYPIC AND GENOTYPIC CORRELATIONS IN SELECTED GENOTYPES OF SUNFLOWER (Helianthus animus L.)

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dc.contributor.authorABDULLAHI, YAHAYA
dc.date.accessioned2014-06-20T08:05:31Z
dc.date.available2014-06-20T08:05:31Z
dc.date.issued1997-07
dc.descriptionA thesis submitted to the Post-Graduate School, Ahmadu Bello University, Zaria, Nigeria in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (CROP BREEDING) Department of Plant Science, Faculty of Agriculture, Ahmadu Bello University, Zaria. JULY, 1997en_US
dc.description.abstractInvestigations to determine the phenotypic and genotypic correlations among 12 traits of sunflower (Helianthus annuus L.) were carried out for 2 years, 1992 and 1993 in Samaru, Northern Nigeria. Nine open pollinating sunflower genotypes collected from different parts of the world were grown in a randomized complete block design with four replications. Each plot consisted of four rows and the two inner rows formed the net plot from which various traits were measured and analysed. Variations observed within the traits and between the traits were highly significant. Number of leaves per plant, capitulum diameter, plant height and grain yield exhibited a high level of variability, indicating the possibility of their improvement through appropriate breeding procedures. The correlation studies indicated that there is an ample opportunity for improving grain yield through its components viz: emergence count, capitulum diameter, number of leaves per plant, 1000 grain weight, protein content and dry matter content. Continuous selection for these traits will therefore lead to an increase in grain yield. Several of the methods of recurrent selection used for hybrid development eg S1 selection, full sib and half sib could be applied as breeding strategies to improve yield and combining ability of populations. A relatively good output of oil and protein content of the grains was obtained which could be exploited to make up the prevailing nutritional deficiencies of the society. A relatively good output of oil and protein content of the grains was obtained which could be exploited to make up the prevailing nutritional deficiencies of the society.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4955
dc.language.isoenen_US
dc.subjectVARIABILITY,en_US
dc.subjectANALYSIS,en_US
dc.subjectPHENOTYPIC,en_US
dc.subjectGENOTYPIC,en_US
dc.subjectCORRELATIONS,en_US
dc.subjectSELECTED,en_US
dc.subjectGENOTYPES,en_US
dc.subjectSUNFLOWER,en_US
dc.subject(Helianthus animus L.)en_US
dc.titleVARIABILITY ANALYSIS, PHENOTYPIC AND GENOTYPIC CORRELATIONS IN SELECTED GENOTYPES OF SUNFLOWER (Helianthus animus L.)en_US
dc.typeThesisen_US
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