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55461

GENETIC ANALYSIS AND SELECTION OF SOME AGRO-ECONOMIC CHARACTERISTIC AND ITS COMPONENT IN COWPEA VIGNA UNGUICULATA L WALP UNDER DROUGHT CONDATION

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Last updated: 04 Jan 2025

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Abstract

  The climate is changing all over the world, particularly in sem-arid and arid regions. This changing climate could strongly affect cowpea production worldwide. As the world population continues to grow, and water resource for crop production decline and temperature increase, so the development of heat and drought tolerance cultivars is an issue of global concern. In this context, two cycles of selection were employed in the F2 generation of a cross between to assess the impact of selection on seed yield in response to drought. Family selection and within-family selection were adopted in the second cycle of selection. The observed response to selection for dry seed yield was 7.27% in the F3 generation and 4.09 and 19.82% in the F4 generation for family and within family selection, respectively. The main dry seed yield of F3 generation exceeded that of two standard cultivars ("Cream 12" and "Azmerly") by 20.62 and 10.54%, respectively. While the mean of F4 selection exceeded that of the two standard cultivars by 39.60 and 26.46%, respectively. Significant positive correlations were obtained for weight of 100-seeds (2.8), Pod length (3.91) and number of seeds/pod (3.29) in the F3 generation but not in the second cycle of selection. Generally, the observed response to selection were greater than the predicted response indicating the presence of dominant gene affects for the trait studied.

DOI

10.21608/jpp.2014.55461

Authors

First Name

A.

Last Name

Rashwan

MiddleName

M. A.

Affiliation

Dept. of Hort. (Vegetable crops), Fac. Of Agric., South Valley Univ., Qena, Egypt

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Volume

5

Article Issue

6

Related Issue

8456

Issue Date

2014-06-01

Receive Date

2019-10-27

Publish Date

2014-06-01

Page Start

1,063

Page End

1,078

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_55461.html

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https://jpp.journals.ekb.eg/service?article_code=55461

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11

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Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

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

MainTitle

GENETIC ANALYSIS AND SELECTION OF SOME AGRO-ECONOMIC CHARACTERISTIC AND ITS COMPONENT IN COWPEA VIGNA UNGUICULATA L WALP UNDER DROUGHT CONDATION

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Article

Created At

22 Jan 2023