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eISSN: 2582-8185 || CODEN: WJARAI || Impact Factor 8.2 ||  CrossRef DOI

Research and review articles are invited for publication in March 2026 (Volume 29, Issue 3) Submit manuscript

Effect of seasonal variability on the physiological performance of selected cocoa (Theobroma cacao L) clones in Nigeria

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  • Effect of seasonal variability on the physiological performance of selected cocoa (Theobroma cacao L) clones in Nigeria

Kayode Olufemi Ayegboyin 1, *, Amos Olatunde Famaye 1, Mohammed Baba Nitsa 3, Osas Ugioro 1, Olayinka Olufemi Olaniyi 2 and Osita Ibe 1

1 Department of Agronomy and Soils, Cocoa Research Institute of Nigeria, KM 14, Ibadan – Ijebu-Ode Road, Idi-Ayunre, PMB 5422, Ibadan, Nigeria.
2 Department of Crop Improvement, Cocoa Research Institute of Nigeria, KM 14, Ibadan – Ijebu-Ode Road, Idi-Ayunre, PMB 5422, Ibadan, Nigeria.
3 Department of Crop Science, Faculty of Agriculture, University of Abuja, Nigeria.
 
Research Article
World Journal of Advanced Research and Reviews, 2024, 23(03), 754–765
Article DOI: 10.30574/wjarr.2024.23.3.2640
DOI url: https://doi.org/10.30574/wjarr.2024.23.3.2640
 
Received on 22 July 2024; revised on 02 September 2024; accepted on 05 September 2024
 
Eleven cocoa clones namely AMAZ 15, ICS 95, IMC 47, MAN 15, PA 150, SCA 9, SPEC 54, UF 67, F3 AMAZON, N 38 and TC 2were hand pollinated and the seeds were raised for 6 months before being transplanted to the field at 6 months. Survival count of the clones was taken for 36 months starting from the first month of establishment. Data on the gas exchange characteristics of cocoa clones started when cocoa were 12 months and continued for the next 2 wet and 2 dry seasons. Majority of cocoa clones showed higher values of stomatal conductance, stomatal transpiration, photosynthetic rates, relative water content, cuticular transpiration and stomata density during wet season while eight of the eleven cocoa clones had higher water use efficiency performance in dry season. The regression analysis also showed a linear, positive and significant relationship between stomatal transpiration and stomatal density of all cocoa clones. The results showed significant differences in the abilities of cocoa clones to cope with water stress while majority of cocoa clones performances significantly differed between dry and wet seasons.
 
Cocoa; Clones; Water stress; Water use efficienc
 
https://wjarr.com/sites/default/files/fulltext_pdf/WJARR-2024-2640.pdf

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Kayode Olufemi Ayegboyin, Amos Olatunde Famaye, Mohammed Baba Nitsa, Osas Ugioro, Olayinka Olufemi Olaniyi and Osita Ibe. Effect of seasonal variability on the physiological performance of selected cocoa (Theobroma cacao L) clones in Nigeria. World Journal of Advanced Research and Reviews, 2024, 23(3), 754-765. Article DOI: https://doi.org/10.30574/wjarr.2024.23.3.2640

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