Fragrance Gene Identification in Elite Rice Lines from Himalayan Foothills | InformativeBD

Hamid Ali, Fida Muhammad Abbasi, Habib Ahmad, Aziz-Ud-Din, Abzar, Abdullah Khan,, Muhammad Abid Khan, Irfan Ullah, Aqib Zeb, and Adnan Sarwar, from the different institute of the Pakistan. wrote a research article about, Fragrance Gene Identification in Elite Rice Lines from Himalayan Foothills. entitled, Identification of fragrance gene in some elite advance lines of rice cultivated in foothills of the Himalayas.This research paper published by the International Journal of Biosciences (IJB).an open access scholarly research journal on Biosciences . under the affiliation of the International Network For Natural Sciences | INNSpub. an open access multidisciplinary research journal publisher. 

Abstract

A molecular survey was conducted for the screening of fragrance (fgr) gene in some elite advance lines of rice developed by Dr. Fida Muhammad Abbasi, Professor at Department of Genetics Hazara University Mansehra. Sequence Tag Site (STS) marker RG 28L was used in this study that amplified 140 and 120 bp fragment in fragrant and non-fragrant genotypes, respectively. Among the cultivated varieties Basmati-385 and Swat-1 showed the presence of fgr gene (140 bp amplicon) while IRBB59, JP-5, Fakhre Malakand, and IR24 were lacking this gene. Among the advance lines 12 genotypes showed the presence of fgr gene (140), two genotypes (NPT-86 and Line 36) were segregating while the remaining 16 genotypes were lacking this gene. Grain length of genotypes was also measured that ranges from 4.67 t0 8.10 mm. On the basis of grain length the genotypes were categorized into short, medium, long and extra-long. In this study 4 genotypes possessed extra-long, 17 long, 13 medium and only 2 have short grains.

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Introduction

Rice (Oryza sativa L.) is a staple food for more than half of the world's population (Marathi et al., 2012). In rice physical grain quality plays an important role in consumer preference. Juliano and Duff (1991) concluded that improvement of physical grain quality is the second major objective of rice breeding programs after yield in many rice producing countries of the world. The physical grain quality of rice is a complex trait that is composed of many components such as appearance quality, cooking quality, eating quality and nutritional quality. Each one of these components also consists of many attributes whose values are determined not only by their physiochemical properties but also by the history and cultural traditions of the people in the human communities who consume the rice (Tan et al., 1999). One of the most valuable traits in high-quality rice is aroma or fragrance, which is important for consumer preference and global trade (Singh et al., 2000). Fragrant rice emits specific scent in the fields at the time of flowering, at harvesting, in storage, during milling, cooking and eating. Economically, it possesses an extraordinary position in the global business sector because of its pronounced, pleasant and unique scent and mouth feeling taste after cooking. Fragrant rice is preferred over non-fragrant rice due to special occasions and for export, and thus they command a higher market price. A better understanding of the factors that contribute to the overall grain quality of rice will lay the foundation for developing new breeding and selection strategies for combining high quality, with high yield. This is necessary to meet the growing global demand for high quality rice while offering producing countries additional opportunities for generating higher export revenues.

Pakistan is famous for exporting high quality basmati rice but rice yield is stagnant from the previous few decades. Dr. Fida Muhammad Abbasi Professor at Department of Genetics, Hazara University Mansehra Pakistan has developed advance lines of rice in order to break yield stagnation. These lines are high yielding but their physical grain quality has not been properly assessed, therefore the present study was being proposed with the aims to identify fragrance (fgr) gene in these advance lines.

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Source :Identification of fragrance gene in some elite advance lines of rice cultivated in foothills of the Himalayas

So Cell research 18(12), 1199-1209. http://dx.doi.org/10.1038/cr.2008.30.7