28, May 2026

Amylose content and grain phenotypic traits of rice (Oryza sativa L.) varieties

VOLUME-10; ISSUE-5; MAY-2026

Author(s): 1. Maragani Madhavi Latha, 2. Kelam Narendra, 3. Kokkanti Mallikarjuna

Authors Affiliations:

 

1Department of Botany and Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar-522510, Guntur, Andhra Pradesh, India.

2Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad-500046, Telangana, India.

3*Professor, Department of Botany and Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar-522510, Guntur, Andhra Pradesh, India.

DOIs:10.2017/IJRCS/202605015     |     Paper ID: IJRCS202605015


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Abstract

Rice (Oryza sativa L.) quality is largely determined by physicochemical and phenotypic properties, particularly amylose content and grain morphology. In this study, amylose content and grain phenotypic traits were assessed in 36 varieties collected from both traditional and modern agricultural practices in Andhra Pradesh, India. Amylose content was determined using a standard iodine colourimetric method, while qualitative parameters such as whole-grain size, shape, pericarp colour, and 100-grain weight were evaluated in accordance with IRRI guidelines. Amylose content ranged from 7.37% to 30.50%, classifying varieties into very low, low, intermediate, and high amylose groups. Significant variation was observed in grain weight (1.12–2.74 g), size, and shape, with most varieties exhibiting medium- to slender-grained characteristics. Pigmented varieties exhibited distinct phenotypic diversity and tended to fall within the lower- to intermediate-amylose categories. The results highlight substantial diversity among rice varieties, indicating their potential for breeding programmes targeting nutritional quality and consumer preferences.

Oryza sativa L., Amylose content, Phenotypic traits, Pigmented rice

Maragani Madhavi Latha,  Kelam Narendra,  Kokkanti Mallikarjuna (2026); Amylose content and grain phenotypic traits of rice (Oryza sativa L.) varieties, International Journal of Research Culture Society,    ISSN(O): 2456-6683,  Volume – 10,   Issue –  5,  Available on – https://ijrcs.org/

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