Heterosis and Combining Ability Studies in Sunflower (Helianthus Annuus L.) (Record no. 70854)

MARC details
000 -LEADER
fixed length control field 02677nam a2200217 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250214113330.0
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 SWA
100 ## - MAIN ENTRY--PERSONAL NAME
Name of Author Swamy Shivani M. K.
245 ## - TITLE STATEMENT
Title Heterosis and Combining Ability Studies in Sunflower (Helianthus Annuus 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 143
Book Size 32 Cms
520 ## - SUMMARY, ETC.
Abstract. ABSTRACT<br/><br/> Sunflower (Helianthus annuus L.) a cross-pollinated crop, occupies a strategic position in food security as an important edible oilseed crop globally, due to its adaptability, short growth cycle (85–100 days), high yield potential, and photoperiodic insensitivity. The present study aims to introduce new inbreds resulting from mutation breeding, as well as the hybridization of B and R lines with TX-16R (Texas Red 16), to enhance the yield quality of hybrids by providing resistance to major biotic stresses. A line × tester mating design, with four CMS lines and twelve testers, was employed, resulting in 48 hybrids during Rabi 2023. The parents, hybrids, along with three checks, were assessed for general combining ability (GCA), specific combining ability (SCA) and heterosis using a Randomized Complete Block Design (RCBD) with two replications during Summer 2024. The analysis of variance revealed significant differences for most traits, indicating the diversity and potential of the parent lines used. The study found that SCA variance was higher than GCA variance for all traits, suggesting that non-additive gene action was predominant. CMS-17A and CMS-103A emerged as the best general combiners among the female parents, while DSR-35 was the top general combiner among the testers for seed yield and disease resistance, followed by DSR- 125, DSR-107, and PGS-3-1. SCA is a good predictor of per se performance. The hybrids CMS-17A × PGS-2-1, CMS-103A × DSR-37, and CMS-335A × PGS-3-1 were identified as<br/>good specific combiners for multiple important traits, including seed yield per plant and oil content. Heterosis analysis showed significant positive effects for seed yield, with CMS-234A<br/>× DSR-35 and CMS-17A × PGS-2-1 demonstrating high heterosis over the mid-parent and standard checks. Additionally, several hybrids exhibited resistance to Alternaria leaf blight, with CMS-17A × DSR-107, CMS-17A × PGS-2-1, and CMS-234A × DSR-35 identified as<br/>resistant and high-yielding.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Subject Genetics and Plant Breeding
700 ## - ADDED ENTRY--PERSONAL NAME
2nd Author, 3rd Author Vijayakumar A. G.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha Item type THESIS
Edition M.Sc. (Agri)
Classification part 581.56
Call number prefix SWA
Suppress in OPAC No
942 ## - ADDED ENTRY ELEMENTS (KOHA)
-- 581_560000000000000
999 ## -
-- 70854
-- 70854
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/SWA T14073 14/02/2025 1 14/02/2025 THESIS