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163703

GENETIC AND MOLECULAR STUDIES ON EARLINESS IN RICE (ORYZA SATIVA L.)

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Last updated: 26 Dec 2024

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Abstract

The present research was conducted to study earliness and their correlations with grain yield in rice breeding. It was carried out during 2012 and 2017 growing seasons at RRTC Farm, Sakha, Kafr El-Sheikh, Egypt. F1 were evaluated along with their parents for genotypic variation. ANOVA revealed significant differences at the 0.01 level among crosses and parents as well as between parents and crosses. These results indicated a wide range of variations among parental groups. The mean squares of parents vs. crosses were found to be significant for all grain yield and its component characters. Variance among crosses indicated significant SCA effects at the 0.01 level for all its component traits. Concerning GCA effects four entries; Sakha 101, Novator, Anait and Large Stigma exhibited positive significant estimates at 0.01 levels for grain yield /plant. The desirable hybrid combinations Giza 179 X Large Stigma and Sakha 105 X VNIRB 572 exhibited significant values of SCA effects at 0.01 and 0.05 levels for grain yield. Heritability estimates in narrow sense ranged from low to moderate. Sakha 101 X Novator, Sakha 106 X Novator and Giza 179 X Large Stigma were the promising hybrid combinations for improving yield character according to results for mid and better parent heterosis. Positive significant correlation coefficient at 0.01 level was recorded between 1000-grain weight and grain yield/plant. All of 11 SSR motifs were polymorphic and produced varying number of alleles with different size ranges. A total of 99 alleles were identified with 10 varieties under study.

DOI

10.21608/mjab.2021.163703

Keywords

Genetic, molecular studies, earliness, Grain yield, RICE BREEDING

Authors

First Name

Ragaa A.

Last Name

Eissa

MiddleName

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Affiliation

Prof. of Genetics, Fac. of Agric., Menoufia Univ.

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Orcid

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First Name

H. H.

Last Name

Nagaty

MiddleName

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Affiliation

Prof. of Genetics, Fac. of Agric., Menoufia Univ.

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City

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Orcid

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First Name

M. H. El

Last Name

Malky

MiddleName

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Affiliation

Head of Researcher, Field Crops Research Institute, Agricultural Research Center

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Volume

6

Article Issue

2

Related Issue

23625

Issue Date

2021-03-01

Receive Date

2021-04-13

Publish Date

2021-03-01

Page Start

27

Page End

28

Print ISSN

2357-0768

Online ISSN

2735-3532

Article File

MJAB_Volume 6_Issue 2_Pages 27-28.pdf

PDF . 406.0kB

Link

https://mjab.journals.ekb.eg/article_163703.html

Detail API

https://mjab.journals.ekb.eg/service?article_code=163703

Order

4

Type

original papers

Type Code

1,460

Publication Type

Journal

Publication Title

Menoufia Journal of Agricultural Biotechnology

Publication Link

https://mjab.journals.ekb.eg/

MainTitle

GENETIC AND MOLECULAR STUDIES ON EARLINESS IN RICE (ORYZA SATIVA L.)

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Article

Created At

23 Jan 2023