Beta
ManageSearchChatDiscover
2612

Heterosis, Heritability and Combining Abilities for some Earliness Traits in Squash (Cucurbita pepo, L.)

Article

Last updated: 01 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

Crop genetics and breeding

Abstract

This study was conducted at Kaha Research Farm of Vegetables Breeding Department, Horticultural Research Institute, (HRI), Agric. Res. Center (ARC), Giza, Egypt, during the period from 2008 to 2010. The study aimed to estimate heterosis versus the mid-parents and the better parent, general (GCA) and specific (SCA) combining ability variances, nature of gene action, heritability in both broad and narrow senses in some summer squash for economic earliness traits. These traits included number of first female flowering node (No.1stF.F.N); date of first male flower (D.1stM.F.); data of first female flower (D.1stF.F.); first picking date (1stP.D.) and early yield per plant (E.Y./P.kg.). Seven imported squash varieties, namely Eskandarani (P1); Zucca Patisson custard white (P2); All Green Bush (P3); Courgette Orelia (P4); Sakiz (P5); Copi (P6) and Gapla (P7) were used as parental varieties in the present investigation. Diallel crosses (with reciprocals) were made between these parents to obtain 42 F1,1r hybrids according to the complete diallel crosses mating design. All genotypes were evaluated in randomized complete-blocks designs with three replications. The results indicated that the parental varieties Courgette Orelia (P4) and Gapla (P7) seemed to be the best combiners for earliness traits such as number of first female flowering node (No.1stF.F.N); date of first male flower (D.1stM.F.); data of first female flower (D.1stF.F.) and first picking date (1stP.D.). The parents Zucca Patisson custard white (P2) and Copi (P6) were the best combiners for early yield per plant (E.Y./P.kg.). In general, the performances of most F1,1r hybrids were variable and the results cleared that no hybrid was the best all for earliness traits. The results showed the importance of general (GCA) and specific (SCA) combining abilities. GCA was larger than their corresponding estimates of SCA for most earliness traits. Reciprocal effects (r) were significant for most earliness traits. In the same time, the estimates of heritability in broad sense were larger in magnitudes than their corresponding estimates of narrow sense.

DOI

10.21608/asejaiqjsae.2014.2612

Keywords

squash, earliness, Heterosis, combining abilities and heritability

Authors

First Name

El-Adl

Last Name

A. M.

MiddleName

-

Affiliation

Dept. of Genetics, Faculty of Agric. Mansoura University, Egypt.

Email

-

City

-

Orcid

-

First Name

A. H.

Last Name

Abd El-Hadi

MiddleName

-

Affiliation

Dept. of Genetics, Faculty of Agric. Mansoura University, Egypt.

Email

-

City

-

Orcid

-

First Name

Horeya

Last Name

M. Fathy

MiddleName

-

Affiliation

Vegetables Breeding Department, Horticulture Res. Inst. (HRI), ARC, Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

MOHAMED

Last Name

ABDEIN

MiddleName

-

Affiliation

Biology Dept., Fac., of Arts and Science- Rafha, Northern Border Univ., Saudi Arabia,91431 Vegetable Breeding, Horticulture Inst., ARC, Giza, Egypt. 12619

Email

abdeingene@yahoo.com

City

GIZA

Orcid

0000-0001-8922-6089

Volume

35

Article Issue

JULY-SEPTEMBER

Related Issue

488

Issue Date

2014-09-01

Receive Date

2014-07-22

Publish Date

2014-09-30

Page Start

203

Page End

214

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 35_Issue JULY-SEPTEMBER_Pages 203-214.pdf

PDF . 203.5kB

Link

https://asejaiqjsae.journals.ekb.eg/article_2612.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=2612

Order

6

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

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

MainTitle

Heterosis, Heritability and Combining Abilities for some Earliness Traits in Squash (Cucurbita pepo, L.)

Details

Type

Article

Created At

22 Jan 2023