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Comprehensive evaluation and exploration of elite resources of Shanlan upland rice for agronomic traits

Published online by Cambridge University Press:  21 November 2025

Yapeng Li ,
Linan Zhai ,
Xiaowei Yan ,
Yanhui Lin ,
Like Lou ,
Xiaorong Xiao ,
Mingchao Zhao ,
Yong Yun ,
Yisheng Han  and
Funeng Xing
...Show all authors
Yapeng Li
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Linan Zhai
Affiliation:
Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Xiaowei Yan
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Yanhui Lin
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Like Lou
Affiliation:
National Nanfan Research Institute (Sanya), Chinese Academy of Agricultural Sciences, Sanya, China
Xiaorong Xiao
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Mingchao Zhao
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Yong Yun
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Yisheng Han
Affiliation:
Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
Funeng Xing
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
QingJie Tang*
Affiliation:
Sanya Institute, Hainan Academy of Agricultural Sciences, Sanya, China Cereal Crops Institute, Hainan Academy of Agricultural Sciences/Key Laboratory of Crop Genetics and Breeding of Hainan Province, Haikou, China
*
Corresponding author: QingJie Tang; Email: tangqingjie@hnaas.org.cn
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Abstract

Shanlan upland rice, as a unique local rice germplasm resource in Hainan comprises abundant genetic diversity. One hundred and sixty two Shanlan upland rice accessions collected from diverse ecological regions in Hainan were systematically characterized based on 11 agronomic traits. The rich genetic diversity was confirmed by phenotypic data from two consecutive years (2023 and 2024). Coefficient of variation ranged from 14.11% to 46.04% in 2023 and from 11.45% to 44.82% in 2024, with panicle-related traits (number of primary branches, grain number of primary branches, number of secondary branches, grain number of secondary branches and grain number per main panicle) exhibiting particularly high variation. Correlation analysis revealed highly significant synergistic effects among yield-related traits. Cluster analysis of the 162 accessions consistently classified them into five major groups across both growing seasons. Through grain number per main panicle and seed setting rate investigation, three excellent resources were selected that demonstrated stable and superior performance in both seasons. Notably, Line 69 exhibited outstanding “large panicles with high seed-setting rate,” producing 261.4 and 305 grains per main panicle in 2023 and 2024, respectively, with seed-setting rates reaching 93.79% and 90.07%. This study presents phenotypic data for Shanlan upland rice, offers high-quality breeding materials for subsequent research, and lays a theoretical groundwork for conserving and exploiting Hainan’s rice resources.

Keywords

agronomic traitselite germplasmphenotypic investigationShanlan upland ricestatistical analysis

Information

Type
Research Article
Information
Plant Genetic Resources , First View , pp. 1 - 7
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of National Institute of Agricultural Botany.

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Footnotes

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Authors contributed equally to this work.

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