Assessment of Genetic Variability, Combining Ability, and SSR Marker-Based Molecular Diversity in Maize (Zea Mays L.) (Record no. 70851)

MARC details
000 -LEADER
fixed length control field 02779nam a2200217 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250214105802.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 250214b |||||||| |||| 00| 0 eng d
040 ## - CATALOGING SOURCE
Transcribing agency UAS Dharwad
041 ## - LANGUAGE CODE
Language code English
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 581.56
Author Label NEH
100 ## - MAIN ENTRY--PERSONAL NAME
Name of Author Nehaa D. R.
245 ## - TITLE STATEMENT
Title Assessment of Genetic Variability, Combining Ability, and SSR Marker-Based Molecular Diversity in Maize (Zea Mays L.)
250 ## - EDITION STATEMENT
Edition Statement M.Sc. (Agri)
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of Publisher Dharwad
Name of Publisher University of Agricultural Sciences
Publication Year 2024
300 ## - PHYSICAL DESCRIPTION
Book Pages 227
Book Size 32 Cms
520 ## - SUMMARY, ETC.
Abstract. ABSTRACT<br/><br/> Maize is considered as Queen of cereals, accounting to its global importance, genetic variability, combining ability, and molecular diversity were assessed in two sets of experiments during the kharif and rabi 2023. In the first experiment, inbred lines were evaluated using an augmented design to estimate genetic variability and trait correlations related to growth, grain yield, and yield-attributing characteristics. In the second experiment, 75 hybrids developed using line × tester design were evaluated alongside parental lines and checks using a simple lattice design to estimate general combining ability (GCA), specific combining ability (SCA), and heterosis. <br/>The analysis of genetic variability revealed significant treatment effects across traits. Maturity traits registered high heritability with low genetic advance, while yield and related traits exhibited moderate to high genetic variation, indicating predominance of additive gene action in controlling these traits. Correlation analysis highlighted a positive association between yield-contributing traits and grain yield, supporting the potential for indirect selection to enhance yield.<br/> Combining ability analysis revealed significant gca effects, particularly in inbred lines, IMLSB 883 and KDMI 15 for maturity traits and in BGUDI 135 and MAI 283 for yield-related traits. Among the hybrids, MAI-769 × CML 286, MAI-313 × CML 286, and MAI-283 × CML 451 recorded significant sca effects and high grain yield.<br/>Parental molecular diversity analysis using 25 SSR markers, 20 markers generated polymorphism and 60 alleles, with an average PIC value of 0.45. UPGMA clustering grouped inbreds into eight major clusters, highlighting the sufficient genetic diversity. <br/>Overall, the findings highlighted the presence of significant genetic variability, strong combining ability, and considerable molecular diversity in the inbred lines and hybrids studied. These results provide a valuable genetic foundation for future maize breeding programmes aimed at enhancing grain yield and other desirable traits.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Subject Genetics and Plant Breeding
700 ## - ADDED ENTRY--PERSONAL NAME
2nd Author, 3rd Author Arunkumar B.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha Item type THESIS
Edition M.Sc. (Agri)
Classification part 581.56
Call number prefix NEH
Suppress in OPAC No
942 ## - ADDED ENTRY ELEMENTS (KOHA)
-- 581_560000000000000
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-- 70851
-- 70851
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Home library Current library Date acquired Total checkouts Full call number Barcode Date last seen Copy number Price effective from Koha item type
    Dewey Decimal Classification     University of Agricultural Sciences, Dharwad University of Agricultural Sciences, Dharwad 28/11/2024   581.56/NEH T14070 14/02/2025 1 14/02/2025 THESIS