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Journal of Agriculture ›› 2020, Vol. 10 ›› Issue (10): 1-6.doi: 10.11923/j.issn.2095-4050.cjas19040021

Special Issue: 水稻

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The Relationship Between Non-structural Carbohydrates and Rice Spikelet Formation: A Review

Dong Minghui1,2(), Jiang Yi2, Chen Peifeng1, Zhao Buhong2, Gu Junrong1   

  1. 1Institute of Agricultural Sciences in the Taihu Lake Region of Jiangsu Province, Suzhou 215155, Jiangsu, China
    2Fostering Base for the National Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, Jiangsu, China
  • Received:2019-04-15 Revised:2019-06-23 Online:2020-10-20 Published:2020-11-18

Abstract:

To further study the mechanism of non-structural carbohydrates (NSC) during the differentiation and development of young panicles and the formation of spikelets in rice, this study comprehensively analyzed the characteristics of spikelet formation in rice, cleared the relationship between the differentiation and development of young panicle and the metabolism of assimilates, the relationship between the development of young panicle and non-structural carbohydrates, then discussed the relationship between sugar signal and hormone signal and its mechanism of regulating young panicle development is believed panicle. It is believed that the easy degeneration of secondary spikelets and the unstable number of grains per panicle of large panicle type rice are closely related to NSC. The regulating of soluble sugar and plant hormones play an important role in regulating the differentiation and development of young panicles. By studying the metabolic characteristics of NSC and the accumulation and decomposition of soluble sugar components, endogenous hormone level in rice spike, protein expression, key metabolic enzyme activity at the different spike developmental stages, and using the different panicle type rice varieties as materials, we could explore the internal relationship between sugar signal and hormone in NSC, and hormone balance related protein expression and metabolic enzyme activity and spike grain number, aiming to construct the cultivation techniques for promoting spikelet differentiation and reducing degradation by adjusting the NSC metabolic.

Key words: Rice, Seed, Spikelets Formation, Non-structural Carbohydrates, Physiological Mechanism

CLC Number: