Combining Ability and Heterosis Studies in Tomato (Solanum lycopersicum L.) (Record no. 70850)

MARC details
000 -LEADER
fixed length control field 02463nam a2200217 4500
003 - CONTROL NUMBER IDENTIFIER
control field OSt
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250214105220.0
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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 MAN
100 ## - MAIN ENTRY--PERSONAL NAME
Name of Author Manu D. Y.
245 ## - TITLE STATEMENT
Title Combining Ability and Heterosis Studies in Tomato (Solanum lycopersicum 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 96
Book Size 32 Cms
520 ## - SUMMARY, ETC.
Abstract. ABSTRACT<br/><br/> An experiment was conducted to assess the diversity among parental single cross hybrids of tomato and to evaluate double cross F1s to identify diverse single cross F1s.<br/>The genetic material for the experiment composed of ten single cross hybrids which were evaluated for genetic diversity using Mahalanobis’s D2 statistics and forty-five double cross hybrids (DCHs) were developed by crossing ten single cross hybrids in all possible combinations without reciprocals during kharif 2023 and evaluated with commercial check NS-592.<br/>Diversity analysis grouped ten parents into three clusters with highest inter-cluster distance observed between I and III clusters followed by II and III clusters. The parents falling in these different clusters may have wider variability and crossing these diverse parents from different clusters might result in high heterotic double cross hybrids. Among the 45 double cross hybrids DCH-3 (20.06 %), DCH-40 (5.93 %) and DCH-42 (-34.54 %) recorded significant better parent heterosis for fruit yield per plot reflecting that practical utility of improvement in combining ability. The estimates of combining ability variances indicated predominance of non- additive gene action for all the traits was found in the double cross hybrids of tomato. Combining ability analysis revealed that SCH-8 (0.43) was a good general combiner and DCH-3 (9.34) was best specific combiner for fruit yield per plot. <br/>Among the double cross hybrids studied DCH-40 and DCH-3 were found to be the best cross combinations based on their per se performance, sca effects and better parent heterosis. The four single cross hybrids (SCH-1, SCH-4, SCH-8, SCH-9) involved in the most productive double cross hybrids were identified as the base material for initiating reciprocal recurrent selection.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Subject Genetics and Plant Breeding
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2nd Author, 3rd Author Sridevi O.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha Item type THESIS
Edition M.Sc. (Agri)
Classification part 581.56
Call number prefix MAN
Suppress in OPAC No
942 ## - ADDED ENTRY ELEMENTS (KOHA)
-- 581_560000000000000
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-- 70850
-- 70850
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/MAN T14069 14/02/2025 1 14/02/2025 THESIS