Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (10): 2789-2797.DOI: 10.3969/j.issn.1000-2561.2021.10.006

• Variety Breeding and Genetic Diversity of Tropical Crops • Previous Articles     Next Articles

Evaluation of Drought Tolerance of Crotalaria pallida in Germination Period

HAO Zhenfan1,2, LIU Guodao2,*(), YANG Hubiao2,*()   

  1. 1. College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
    2. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737, China
  • Received:2021-03-25 Revised:2021-05-21 Online:2021-10-25 Published:2021-11-25
  • Contact: LIU Guodao,YANG Hubiao

Abstract:

The relative germination potential, relative germination rate, germination drought tolerance index, relative radicle length, relative seedling height and vigor index were used as the evaluation indexes to evaluate the drought tolerance of 228 accessions of Crotalaria pallida. According to the average membership function values of the six evaluation indexes, the drought tolerance of the resources was divided into five grades. Among them, one accession germplasm with drought tolerance grade I came from Yunnan, with an average membership function value 0.8, 13 accessions with drought tolerance grade II had an average membership function value less than 0.8, greater than or equal to 0.6, 105 accessions with drought tolerance grade III had an average membership function value less than 0.6, greater than or equal to 0.4, 105 accessions with drought tolerance grade IV had an average membership function value less than 0.4, greater than or equal to 0.2, four accessions with drought tolerance grade V had an average membership function value less than 0.2.

Key words: Crotalaria pallida, germplasm resources, germination period, evaluation of drought tolerance

CLC Number: