Analysis of Combining Ability for Early Maturity and Yield in Rice (Genus: Oryza)‎ at the Kenyan Coast

Joint Authors

Dianga, Al-Imran
Joseph, Kamau W.
Musila, Ruth N.

Source

International Journal of Agronomy

Issue

Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-7, 7 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2020-10-22

Country of Publication

Egypt

No. of Pages

7

Main Subjects

Agriculture

Abstract EN

The main challenges facing rain-fed rice farming in Kilifi County at the Kenyan coast are inadequate and erratic rainfall, inadequate skills, and poorly developed infrastructure.

Of great importance is erratic rainfall that tends to depress towards the end of long rain season, leading to crop failure.

Combining ability analysis is one of the most valuable tools used to ascertain gene action effects and help in selecting desirable parents for making crosses and coming up with high yielding and early maturing lines.

Combining ability for early maturity and yield has not been studied at the Kenyan coast.

This study aimed at determining and identifying good, general, and specific combiners for selecting better parents and better cross combinations in rice crops for developing high yield and short duration lines in rain-fed rice farming.

Seven lines were subjected to half-diallel mating design at the Kenya Agricultural and Livestock Research Organization (KALRO), Mtwapa, and at Bahari in Kilifi town.

Evaluation for general combining ability (GCA) and specific combining ability (SCA) analysis was done.

Combining ability variance and GCA and SCA effects were determined.

Based on GCA effects, best parent for early maturity was Dourado Precoce, while for yield, Supaa, Komboka, and NERICA 10.

SCA estimates indicated that best crosses for yield were D/S, D/N1, and K/N10, while the best performing cross for early maturity was D/N1.

American Psychological Association (APA)

Dianga, Al-Imran& Joseph, Kamau W.& Musila, Ruth N.. 2020. Analysis of Combining Ability for Early Maturity and Yield in Rice (Genus: Oryza) at the Kenyan Coast. International Journal of Agronomy،Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1167387

Modern Language Association (MLA)

Dianga, Al-Imran…[et al.]. Analysis of Combining Ability for Early Maturity and Yield in Rice (Genus: Oryza) at the Kenyan Coast. International Journal of Agronomy No. 2020 (2020), pp.1-7.
https://search.emarefa.net/detail/BIM-1167387

American Medical Association (AMA)

Dianga, Al-Imran& Joseph, Kamau W.& Musila, Ruth N.. Analysis of Combining Ability for Early Maturity and Yield in Rice (Genus: Oryza) at the Kenyan Coast. International Journal of Agronomy. 2020. Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1167387

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1167387