Abstract

Research Article

Agro-morphological Growth Response of Acha (Fonio) (Digitaria Exilis and Digitaria Iburua [Kippist] Stapf.) Exposed to Colchicine: Leaf Length, Leaf Width and Leaf Area Index

Nyam DD*, Gonzuk NS, Sila MD, Tumba YC, Angyu EA and Kwon-Ndung EH

Published: 03 June, 2024 | Volume 8 - Issue 2 | Pages: 060-064

The present study investigated the effects of colchicine treatment on leaf length, leaf width, and leaf area index (LAI) in two species of Acha (fonio), namely Digitaria exilis and Digitaria iburua. Colchicine, a potent mitotic inhibitor, has been widely used to induce polyploidy and in studying the effects of genome duplication on various morphological traits. This study aimed to explore if colchicine treatment could alter the leaf morphology of the two Acha species. Seeds of the two species were treated with colchicine solution at various concentrations (0.05, 0.10, 0.15, and 
0.20 g/dL), while a control group was maintained without any treatment. Leaf length and width were measured using a meter rule, and LAI was calculated by multiplying the leaf length and leaf width with the constant for both species. Statistical analysis was performed using the Analysis of Variance on SPSS to determine significant differences between treated and control groups. The results showed that colchicine treatment had a significant effect on leaf morphology in both Acha species. Leaf length and width increased significantly in response to colchicine treatment, with the degree of increase depending on the concentration. Moreover, the LAI also exhibited a significant increase in treated plants compared to the control group. Colchicine concentration level of 0.10 g/dL
produced the best results that can be exploited to enhance the morphological characteristics of both Acha species. The findings suggest that colchicine-induced polyploidy can enhance leaf growth and overall leaf area in Acha plants, leading to potential implications for agricultural productivity and yield improvement. Further studies are needed to elucidate the underlying mechanisms and long-term effects of colchicine-induced polyploidy on other growth parameters, reproductive traits, and yield in Acha. Understanding the genetic and physiological changes associated with polyploidy in Acha species will contribute to the development of improved breeding strategies and cultivation practices for this important cereal crop.

Read Full Article HTML DOI: 10.29328/journal.jpsp.1001134 Cite this Article Read Full Article PDF

Keywords:

Colchicine treatment; Digitaria (Acha); Polyploid; Breeding; Leaf area index

References

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