International Journal on Food, Agriculture and Natural Resources (IJFANRES)
Vol 3, No 2 (2022): IJ-FANRes

The evaluation of drought-tolerance rice genetic resources

Theophilus Amar-Cofie Quashie (University of Ghana)
Eric Yerenkyi Danquah (West Africa Centre for Crop Improvement, Accra)



Article Info

Publish Date
22 Aug 2022

Abstract

About 70% of the rice consumed in Ghana is imported. The state of self-insufficiency in rice production can be attributed to the lack of adequate or continuous water supply. Rice, being an aquatic plant, is not tolerant to drought, which is known as the most threatening abiotic factor causing as much as 64% yield reduction. Therefore, this study was conducted to identify drought-tolerance genotypes among 24 rice collections and to estimate their heritability. A total of 24 traits were assessed in this study, and three treatments were applied, including stress free, mild stress, and severe stress, each of which involved three replications. The results showed that most of the parameters under investigation, including panicle length, fertile panicle rate, shoot, and root dry weight, and maximum root depth, decreased considerably as the level of drought stress increased. In addition, five of the accessions showed considerable tolerance to drought, eight accessions were high yielding, and eight accessions combined high yields and drought tolerance. The study concluded that 80% of the rice accessions offer promising lines to be used as parents in the development of drought-tolerant varieties and in genetic improvement programs aimed at such a purpose. The study recommended that molecular studies and morphological characterization should be done on the collections to understand their genetic makeup, similarities, and differences.

Copyrights © 2022






Journal Info

Abbrev

IJFANRES

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

IJ-FANRes is an international and cross-disciplinary scholarly and scientific open access, open-source journal on the science and technology of Food, Agriculture, and Natural Resources. Our aim is to encourage Professors, Researchers, and Students to publish their experimental and theoretical ...