Special Thesis & Basic Research

Quality Characteristics and Differences in Planting Regions of Typical Green-labelled Japonica Rice in Jiangsu Province

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  • 1Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Food Quality and Safety-Laboratory for Food Quality and Safety State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing 210014, China
    2Institute of Food Crops, Jiangsu Academy of Agricultural Sciences/Jiangsu High Quality Rice Research and Development Center/Nanjing Branch of China National Center for Rice Improvement, Nanjing 210014, China
    3Technical Center for Public Testing and Evaluation and Identification, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
    4Jiangsu Provincial Green Food Office, Nanjing 210013, China
First author contact:

1st author: 20120049@jaas.ac.cn

Received date: 2025-05-06

  Online published: 2025-11-07

Abstract

To thoroughly investigate the effects of certification status and planting regions on the quality of japonica rice in Jiangsu Province, this study selected Nangeng 46 and Nangeng 9108, which were cultivated under both green certification and conventional planting methods, as the research objects. Samples were collected from the rice-growing regions of Southern Jiangsu, Central Jiangsu, and Northern Jiangsu, respectively. The principal component analysis method was employed to assess and evaluate the appearance quality, cooking and eating quality, as well as nutritional quality of the rice. The research results indicated that the protein content of green-certified Nangeng 46 and Nangeng 9108 decreased by 14.5% and 6.1% compared with that of rice grown under conventional methods, respectively. The planting region had a highly significant impact on the amylose content of japonica rice. For instance, the amylose content of Nangeng 46 planted in Southern Jiangsu increased by 12.9% compared with that in Central Jiangsu; the amylose content of Nangeng 9108 planted in Central Jiangsu increased by 7.6% compared with that in Northern Jiangsu(P<0.01). In terms of amino acid and beneficial mineral content, there were no significant differences among certification status, planting regions, and rice varieties. The results of the principal component analysis showed that the quality of green-certified japonica rice had stronger regional specificity. In Southern Jiangsu, the protein content of green-certified Nangeng 46 decreased by 20.7% compared with Nangeng 46 grown under conventional methods, but its taste value increased by 16.0%; in central Jiangsu, the chalkiness degree of green-certified Nangeng 9108 decreased by 13.5% compared with Nangeng 9108 grown under conventional methods. The findings of this study provide valuable reference for the high- quality development of the green rice industry.

Cite this article

HE Xin, ZHANG Liping, ZHAO Chunfang, ZHU Hong, LU Haiyan, LIU Xianjin, XU Chongxin, ZHANG Xiao, XIE Yajing, HANG Xiangrong . Quality Characteristics and Differences in Planting Regions of Typical Green-labelled Japonica Rice in Jiangsu Province[J]. China Rice, 2025 , 31(6) : 78 -84 . DOI: 10.3969/j.issn.1006-8082.2025.06.012

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