Version 1
: Received: 4 March 2020 / Approved: 5 March 2020 / Online: 5 March 2020 (12:20:24 CET)
How to cite:
Liao, K.; Wang, Y.; Yu, W.; Wei, C.; Liang, C. Characteristics of Carbohydrate Metabolism, Grain Quality and Yield Provide Insights into Rice-Tartary Buckwheat Improvement. Preprints2020, 2020030093. https://doi.org/10.20944/preprints202003.0093.v1.
Liao, K.; Wang, Y.; Yu, W.; Wei, C.; Liang, C. Characteristics of Carbohydrate Metabolism, Grain Quality and Yield Provide Insights into Rice-Tartary Buckwheat Improvement. Preprints 2020, 2020030093. https://doi.org/10.20944/preprints202003.0093.v1.
Cite as:
Liao, K.; Wang, Y.; Yu, W.; Wei, C.; Liang, C. Characteristics of Carbohydrate Metabolism, Grain Quality and Yield Provide Insights into Rice-Tartary Buckwheat Improvement. Preprints2020, 2020030093. https://doi.org/10.20944/preprints202003.0093.v1.
Liao, K.; Wang, Y.; Yu, W.; Wei, C.; Liang, C. Characteristics of Carbohydrate Metabolism, Grain Quality and Yield Provide Insights into Rice-Tartary Buckwheat Improvement. Preprints 2020, 2020030093. https://doi.org/10.20944/preprints202003.0093.v1.
Abstract
Rice-Tartary buckwheat is a special type of Tartary buckwheat with easy hulling thin shell. The local rice-Tartary buckwheat ‘cv. Xiaomiqiao’ (XMQ) was used to explore the characteristics of photosynthesis, starch synthesis, yield and quality, as compared to Tartary buckwheat ‘cv. Jinqiao 2’(JQ2). XMQ showed significantly lower values of net photosynthetic rate, ADPGase activity and starch synthase activity at one or more periods during grain filling, as compared to that of JQ2. The effective branch number and grain number per plant of XMQ were similar to that of JQ2 regardless of different years, but the 1000-grain weight was significantly lighter that resulted in the significantly lower yield. XMQ accumulated similar contents of starch (amylose, amylopectin) and protein (glutelin, albumin, prolamin, globulin) to that of JQ2, but exhibited significantly lower flavonoid content. The values of peak viscosity and hot paste viscosity in XMQ were similar to that of JQ2, but the values of cool paste viscosity, breakdown and setback were significantly lower. In conclusion, XMQ showed low yield due to the insufficient of photosynthesis and starch synthesis. XMQ exhibited high nutritional quality as well as normal Tartary buckwheat and stored 18.88mg g-1 of flavonoid, that can be consumed as daily diet. The present results will provide a basis for food processing and breeding of rice-Tartary buckwheat.
Keywords
net photosynthetic rate; key enzymes activity; starch pasting viscosity; yield
Subject
BIOLOGY, Agricultural Sciences & Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
