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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (3): 411-.doi: 10.19802/j.issn.1007-9084.2019211

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Evaluation and analysis of phenotypic traits of flax germplasm resources

  

  1. 1. Institute of Agronomy, Inner Mongolia Agriculture University, Huhhot 010019; 2. Inner Mongolia Academy of Ag⁃riculture and Husbandry Sciences, Huhhot 010031, China
  • Online:2020-06-28 Published:2020-06-08

Abstract:

 For oil flax breeding, accurately identification and evaluation of germplasm phenotypic traits were focused using 269 flax germplasm resources. A total of 14 phenotypic traits related to yield and quality were investi⁃ gated in 4 environments. The results showed wide phenotypic variations in yield and quality traits, among which the coefficient of variation of grain weight per plant was the highest (24.33%), and growth duration was the lowest (2.66%). The order of phenotypic variation coefficients of yield-related traits was grain weight per plant > fruit num⁃ ber per plant > 1000-grain weight > stem length > branch number > plant height > fruit number > growth duration. The order of phenotypic variation coefficients of quality traits was stearic acid > oleic acid > palmitic acid > linoleic acid > crude fat. 14 phenotypic traits showed normal distribution trend. In 4 environments, the broad heritability of linolenic acid reached 85.91% and 52.38% for stem length. The order of general heritability of yield traits was 1000-grain weight > fruit grain number > grain weight per plant > plant height > growth duration > fruit number per plant > branch number > stem length. The order of general heritability of quality traits was linolenic acid > crude fat > stearic acid > oleic acid > palmitic acid > stearic acid.

Key words: germplasm resources, yield, quality, phenotypic variation

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