CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (3): 401-.doi: 10.19802/j.issn.1007-9084.2019180

Previous Articles     Next Articles

Comprehensive analysis and trend of sesame breeding based on the regional test in norhtern China


  1. Institution of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
  • Online:2020-06-28 Published:2020-06-08

Abstract: The objective was to analyze the changes of yield and agronomic traits of sesame cultivars released in the region in northern China in the past 11 years. The progress and the changes of breeding traits in the northern area of sesame was discussed, in order to provide scientific evidence for genetic improvement of sesame in future. Based on data of from northern China’s cultivars participated in the adaptation regional test from 2007 to 2017 in northern China, the multiple stepwise regression, correlation analyse and other methods were used to compare agro⁃ nomic traits and grain yield traits, including resistance of 16 identified species. The traits were analyzed for quality and disease resistance. The changes of sesame high-yield and high-quality breeding in northern sesame production areas were studied. Results showed that totally 41 varieties participated the regional test from 2007 to 2017. 16 vari⁃ eties were identified by the National Sesame Variety Identification Committee. The yield of newly bred sesame vari⁃ eties had gradually increased. Year by year, 4 traits increased including number of candidated varieties, plant stem  kength, number of individual plants, and growth period. Correlation analysis and multivariate stepwise regressioanalysis showed that main stem length, capsules per plant, and growth duration had greater impacts on yield, fol⁃ lowed by other traits such as plant height and 1000-grain weight. According to their quality analysis and disease re⁃ sistance, no significant quality improvement was found in the past 11 years. The disease resistance initially de⁃

creased and then increased, but yield in this area increased year by year. The main factors affecting yield were found including plant height and growth duration, followed by single plant number, 1000-grain weight and seed per capsule. In conclusion, under the premise of ensuring certain plant height and growth duration, 3 traits could be in⁃creased including capsule numbers per plant, 1000-grain weight and seeds per capsule. The extended of growth pe⁃riod and the increase of plant height directly affected the development of mechanized production of sesame. The
main breeding objectives should be medium-dwarf stalk, short internode, closed carp, excellent quality and strong disease resistance.

Key words: sesame, regional test, correlation analysis, multiple stepwise regression

CLC Number: