Analysis of relationship between head rice yield and breaking force of Japonica rice grains at different maturity stages

IF 2 4区农林科学 Q2 AGRONOMY International Agrophysics Pub Date : 2022-01-31 DOI:10.31545/intagr/145545

Li Yinian, Chen Yulun, D. Qishuo, He Ruiyin, Ding Weimin

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引用次数: 3

Abstract

Rice is the most important crop in China and half of the food demand of China is made up of rice products. The rice planting area is 29.694 mln ha and the annual yield of rice was 200 mln t in 2019. Head rice yield (HRY) is among the most important indices for rice production, but there was also an optimal HRY during the rice maturity process. Rice caryopsis was filled with starch and protein matter, and the physical properties changed with the degree of maturity, however the degree of maturity and the physical properties of the rice grains at different maturity stages affected the HRY. The optimal rice harvest time with maximum HRY is only be determined using the rice moisture content (MC) at present, the rice MC is the result of the cultivation, environmental, and meteorological conditions, but it does not represent the real physical properties of rice grains, this is obviously unsatisfactory, instead HRY should be closely related to physical properties such as breaking force. On the other hand, structural differences exist between the dorsal side and ventral side, such as the size and shape of the starch granules (Xiong et al., 2005), the tissues on the ventral side were softer than those on the dorsal side and a higher number of airspaces and less starch were present © 2022 Institute of Agrophysics, Polish Academy of Sciences

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粳稻不同成熟期籽粒破碎力与抽穗产量的关系分析

大米是中国最重要的农作物，中国一半的粮食需求是由大米制品构成的。水稻种植面积2969.4万公顷，2019年水稻年产量2亿吨。抽穗率是水稻生产的重要指标之一，但在水稻成熟过程中也存在一个最优抽穗率。水稻颖果中充满淀粉和蛋白质物质，其物理性质随成熟度的变化而变化，但不同成熟度阶段稻米籽粒的成熟度和物理性质对HRY有影响。目前，水稻水分含量(MC)是水稻种植、环境和气象条件共同作用的结果，但它并不能代表稻谷的真实物理特性，这显然是不能令人满意的，HRY应该与破碎力等物理特性密切相关。另一方面，背侧和腹侧存在结构上的差异，如淀粉颗粒的大小和形状(Xiong et al.， 2005)，腹侧的组织比背侧的组织更柔软，存在更多的空隙和更少的淀粉©2022波兰科学院农业物理研究所

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来源期刊

International Agrophysics 农林科学-农艺学

CiteScore

3.60

自引率

9.10%

发文量

审稿时长

3 months

期刊介绍： The journal is focused on the soil-plant-atmosphere system. The journal publishes original research and review papers on any subject regarding soil, plant and atmosphere and the interface in between. Manuscripts on postharvest processing and quality of crops are also welcomed. Particularly the journal is focused on the following areas: implications of agricultural land use, soil management and climate change on production of biomass and renewable energy, soil structure, cycling of carbon, water, heat and nutrients, biota, greenhouse gases and environment, soil-plant-atmosphere continuum and ways of its regulation to increase efficiency of water, energy and chemicals in agriculture, postharvest management and processing of agricultural and horticultural products in relation to food quality and safety, mathematical modeling of physical processes affecting environment quality, plant production and postharvest processing, advances in sensors and communication devices to measure and collect information about physical conditions in agricultural and natural environments. Papers accepted in the International Agrophysics should reveal substantial novelty and include thoughtful physical, biological and chemical interpretation and accurate description of the methods used. All manuscripts are initially checked on topic suitability and linguistic quality.