Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (2): 339-348.DOI: 10.3969/j.issn.1000-2561.2021.02.007

• Germplasm Resources, Genetics & Breeding • Previous Articles     Next Articles

Analysis on Starch Properties in Cassava Germplasm Resources

XIAO Xinhui, YE Jianqiu*(), WANG Ming, XU Ruili, ZHANG Jie, WAN Zhongqing   

  1. Tropical Crops Genetics Resources Institute, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Conservation and Utilization of Cassava Genetic Resources, Ministry of Agriculture and Rural Affairs, Danzhou, Hainan 571737, China
  • Received:2020-01-03 Revised:2020-05-27 Online:2021-02-25 Published:2021-02-25
  • Contact: YE Jianqiu

Abstract:

In order to evaluate and select cassava genotypes with good starch properties, the starch yield and 5 starch traits of 212 cassava landraces and varieties were subject to detection, including root starch content, amylose content, amylopectin content, peak viscosity, and gelatinization temperature. Starch indexes of different cassavas were greatly different, and there were a certain correlation between different indexes. Using the probability grading method, eight starch characters were divided into five levels, namely, very low, low, medium, high and very high. The higher strain can be used as the basis of parent materials of cassava breeding. A total of 17 accessions were very high for amylose content, 18 accessions for amylopectin content. Using the principle component analysis, the first and the second component included 83.79% information. The first component was consisted of starch content, amylose content and amylopectin content. Under the comprehensive evaluation by subordinate function, 12 cassava germplasm accessions such as SM 2300-1 etc., were more suitable for the deep processing and utilization of cassava starch.

Key words: cassava, germplasm resources, starch, starch properties, germplasm screening

CLC Number: