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40780

Genetic Behavior of Some Rice Genotypes under Normal and High Temperature Stress

Article

Last updated: 01 Jan 2025

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Subjects

-

Tags

Crop genetics and breeding

Abstract

Thirteen rice genotypes were grown in the two successive rice seasons 2017 and 2018 to assess the presence of variability for desired traits and estimate genetic parameters and correlations for traits under normal and heat stress conditions. Analysis of variance revealed significant differences due to environments, genotypes and their interaction for all studied characteristics in both seasons. The estimates of genotypic (GCV) and phenotypic (PCV) coefficient of variation were highly significant for all studied traits and generally, the PCV values were higher than GCV values, in both seasons. Leaf rolling and sterility percentage increased under heat stress, while days to heading, plant height, number of tillers and number of panicles / plant, 100-grainweight and grain yield/plant decreased under heat stress in comparison to normal condition. As mean performance Giza 179, Giza 178 and Sakha 101 surpassed other genotypes in grain yield and its important attributes, while WAB56-50/Sakha101-1, WAB56-50/Sakha101-2 and IR65907-206-7-8/Gyehwa71 gave the lowest grain yield in both seasons. Giza178 and WAB56-50/Sakha101-1 recorded the lowest values of geometric mean productivity, stress susceptibility index and yield index which refer to those genotypes highly tolerance to heat stress, while Giza 177 and Sakha 101 gave the highest values to be the most heat susceptible genotypes under study. Highly positive and significant phenotypic correlations were observed between yield index and leaf rolling, sterility percentage, geometric mean productivity and stress susceptibility index, otherwise number of tillers/plant, number of panicles/panicle and panicle weight, as yield attributes had highly significant negative correlation with the yield index.  From the results we can conclude that, the genotypes can be scored as heat tolerant, based on days to heading, leaf rolling, tillering productivity and spikelets sterility percentage.
 

DOI

10.21608/asejaiqjsae.2019.40780

Keywords

heritability, genetic advance, phenotypic correlation, heat stress, rice

Authors

First Name

Mahmoud M.

Last Name

Gaballah

MiddleName

-

Affiliation

Rice Research and Training Center (RRTC), Rice Research Department, Field Crops Research Institute, Agricultural Research Center, 33717, Sakha, Kafr Elsheikh, Egypt.

Email

mahmoudgab@yahoo.com

City

-

Orcid

-

First Name

Aziz F.

Last Name

Abu El-Ezz

MiddleName

-

Affiliation

Rice Research and Training Center (RRTC), Rice Research Department, Field Crops Research Institute, Agricultural Research Center, 33717, Sakha, Kafr Elsheikh, Egypt.

Email

abuelezz76@hotmail.com

City

-

Orcid

-

Volume

40

Article Issue

APRIL- JUNE

Related Issue

5258

Issue Date

2019-04-01

Receive Date

2019-05-30

Publish Date

2019-06-30

Page Start

370

Page End

384

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 40_Issue APRIL- JUNE_Pages 370-384.pdf

PDF . 610.2kB

Link

https://asejaiqjsae.journals.ekb.eg/article_40780.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=40780

Order

15

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Genetic Behavior of Some Rice Genotypes under Normal and High Temperature Stress

Details

Type

Article

Created At

22 Jan 2023