341679

Evaluation of some rice (Oryza sativa L.) genotypes under drought stress conditions by using morphological, physiological and molecular characteristics

Article

Last updated: 25 Feb 2025

Subjects

-

Tags

Crop Science

Abstract

Drought is a major challenge, affecting rice at the morphological, physiological, biochemical and molecular levels. This study was conducted to compare eight cultivars of rice (Oryza sativa L.) for drought tolerance based on some morphological, physiological and molecular tests at the seedling stage. Drought stress was imposed by four levels of polyethylene glycol (PEG) 0, 5, 10 and 15% for 5 days. After 5 days, where seeds of all concentrations were watered daily with tap water for 21 days, plant samples were taken for measurements. Seeds from all cultivars treated with 15% PEG recorded complete germination (100%) for both G179 and Hageen Masry, while the other varieties recorded germination ranged between 56.7 and 83.30. At 10% PEG, a decrease in chlorophyll a, b, carotenoids, proline and shoot length was observed. This result indicates that Hageen Masry showed the best performance under drought stress due to its own nature of tolerance. For PCR analysis, a total of 47DNA fragments were detected; Among them, 33 are polymorphic, and 9 bands are monomorphic. To determine the level of polymorphism in the analyzed set of the eight rice genotypes, the percentage of polymorphic bands ranged from 20% to 100% with an average of 73.4%. The amplified DNA bands ranged in size from 100 to 1500 bp. The SCoT-2 primer was the most polymorphic, while the lowest number of amplified polymorphic fragments (1) was detected by primers SCoT-5 and SCoT-6. The polymorphic information content (PIC) value ranged from 0 to 0.374, with an average of 0.26.

DOI

10.21608/ajar.2023.194376.1113

Keywords

rice, Combining ability, inbreeding depression, Heterosis, type of gene action F1 and F2

Authors

First Name

Amira

Last Name

Eissa

MiddleName

-

Affiliation

Biological and Ecological Sciences Department, Faculty of Home Economic, Al-Azhar University, Tanta, Egypt.

Email

amiraeissa.0581@azhar.edu.eg

City

-

Orcid

-

First Name

Rania

Last Name

Elsaid

MiddleName

-

Affiliation

Biological and Ecological Sciences Dept. Faculty of Home Economic, Al-Azhar University at Tanta , Egypt.

Email

raniaahmedrashadelsaid@azhar.edu.eg

City

Mansoura

Orcid

-

First Name

Samir

Last Name

Morad

MiddleName

-

Affiliation

Agronomy Department, Faculty of Agriculture, Al-Azhar University ,Cairo , Egypt.

Email

drsamirmorad@gmail.com

City

cairo

Orcid

-

First Name

shafik

Last Name

Darwish

MiddleName

-

Affiliation

Dept. of Genome Mapping , Agricultural Genetic Engineering Research Institute (AGERI) ,Agricultural Research Center , Giza , Egypt

Email

shafikdarwish2014@gmail.com

City

Giza

Orcid

-

Volume

48

Article Issue

2

Related Issue

46166

Issue Date

2023-12-01

Receive Date

2023-02-22

Publish Date

2023-12-01

Page Start

179

Page End

193

Print ISSN

1110-1563

Online ISSN

2786-0051

Link

https://ajar.journals.ekb.eg/article_341679.html

Detail API

http://journals.ekb.eg?_action=service&article_code=341679

Order

341,679

Type

Original Article

Type Code

929

Publication Type

Journal

Publication Title

Al-Azhar Journal of Agricultural Research

Publication Link

https://ajar.journals.ekb.eg/

MainTitle

Evaluation of some rice (Oryza sativa L.) genotypes under drought stress conditions by using morphological, physiological and molecular characteristics

Details

Type

Article

Created At

24 Dec 2024