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Inheritance Studies of Amylose Content, Yield and Grain Quality Characters in Different Rice Genotypes (Oryza sativa L.)

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Last updated: 04 Jan 2025

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Abstract

Breeding for produced new rice varieties with good grain quality especially for low amylose content has become one of the most important goals in plant breeding programmes. In this experiment, three rice genotypes(Giza178, Giza175 and IR64) were used as a perants to study the inheritance amylose content, heritabilityand genetic parameters for grain yield per plant, 1000-grains weight, grain length, grain shape, hulling%, milling%, head rice% and gelatinization temperature characters. A randomized complete block design (RCBD) was used with three replications for six generations viz., P1, P2, F1, F2, BCP1 and BCP2 of a cross between Giza 178 (low amylose content) x Giza 175 (high amylose content) (cross I) and Giza178 (low amylose content) x IR64 (intermediate amylose content) (cross II) were used for the study. The results showed that the F1 plants of cross I gave intermediate amylose content in the endosperm 22.58%, while, the amylose content of F2 plants varied from 13.10 to 35%. and classified into two categories, i.e. 13.10-19 % and 20.50 -35 %.. These results indicated that high amylose content was incompletely dominant over low amylose. Cross II (Giza 178/IR64) low amylose content parent (Giza178) and intermediate amylose parent (IR64) gave 19.84% amylose content in F1 plants, while in F2 grains amylose values ranged from9.5 to 24.1. The plants could be classified into 3 categories. Category 1 with 9.5% - 11% a, category 2 (14.5-19.05%) and Category 3 (21.1-24.1%). Selection for intermediary segregates would be ineffective because the dosage effects would dissipate in further generations.

DOI

10.21608/jpp.2021.79720.1034

Keywords

rice, Amylose, Additive, gene action, heritability

Authors

First Name

Nessreen

Last Name

Bassuony

MiddleName

N.

Affiliation

rice research and training center

Email

nnazmy4@yahoo.com

City

kafr elshiekh

Orcid

https://orcid.org/00

Volume

12

Article Issue

6

Related Issue

25727

Issue Date

2021-06-01

Receive Date

2021-07-08

Publish Date

2021-06-01

Page Start

645

Page End

650

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_182698.html

Detail API

https://jpp.journals.ekb.eg/service?article_code=182698

Order

8

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

https://jpp.journals.ekb.eg/

MainTitle

Inheritance Studies of Amylose Content, Yield and Grain Quality Characters in Different Rice Genotypes (Oryza sativa L.)

Details

Type

Article

Created At

22 Jan 2023