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233410

COMBINING ABILITY AND GENE ACTION FOR AGRONOMIC AND YIELD TRAITS OF NOVEL EGYPTIAN PHOTO THERMO-SENSITIVE GENIC MALE STERILE (PTGMS) IN HYBRID RICE

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Last updated: 28 Dec 2024

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Abstract

Studies of combining ability and gene action of newly developed Photo Thermo sensitive genic male sterile lines (PTGMS) and six exotic and novel Egyptian testers of new plant types were estimated using Line x tester analysis for some agronomic  and yield traits to get useful information for two line system hybrid rice in Egypt. Significant differences of GCA among PTGMS lines testers for all agronomic and yield studied traits. Highly significant differences of line x tester (SCA) for all the studied traits, indicated that they interacted and produced markedly different combining ability effects. The estimates of variances due to GCA were higher than that due to SCA for all traits indicating the predominance of additive gene action in the inheritance of all these traits. Heritability estimates in narrow sense (h2n) were high for all traits studied.Among the five PTGMS lines, PTGMS 78and PTGMS 39 were the best general combining for grain yield and most studied traits. The testers, EJGSR 182, EJGSR 180, and Sakha Super 300 were the best general combiners among testers for grain yield and most studied traits. Eight hybrid rice combinations gave significantly positive estimates of SCA effects. The best estimates were obtained of the combinations, PTGMS 19/Sakha 104, PTGMS 78/Sakka Super 300 and PTGMS 43/Sakha Super 300.

DOI

10.12816/ejpb.2021.233410

Keywords

Novel PTGMS, Photo –Thermo sensitive, Two Line system, EGMS line, GCA, SCA

Volume

25

Article Issue

2

Related Issue

31793

Issue Date

2021-12-01

Receive Date

2022-01-25

Publish Date

2021-12-01

Page Start

203

Page End

222

Print ISSN

1110-7863

Online ISSN

2735-3885

Article File

EJPB_Volume 25_Issue 2_Pages 203-222.pdf

PDF . 791.6kB

Link

https://ejpb.journals.ekb.eg/article_233410.html

Detail API

https://ejpb.journals.ekb.eg/service?article_code=233410

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3

Type

Original research

Type Code

1,909

Publication Type

Journal

Publication Title

Egyptian Journal of Plant Breeding

Publication Link

https://ejpb.journals.ekb.eg/

MainTitle

COMBINING ABILITY AND GENE ACTION FOR AGRONOMIC AND YIELD TRAITS OF NOVEL EGYPTIAN PHOTO THERMO-SENSITIVE GENIC MALE STERILE (PTGMS) IN HYBRID RICE

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Article

Created At

23 Jan 2023