Legume Research - An International Journal
Web of Science
  • Year: 2019
  • Volume: 42
  • Issue: 2

Seed storability of summer-planting soybeans under natural and artificial aging conditions

  • Author:
  • Xi Zhang, Mengge Xu, Aiman Hina, Jiejie Kong, Junyi Gai, Xiaohong He1, Tuanjie Zhao
  • Total Page Count: 10
  • Page Number: 250 to 259

1Soybean Research Institute, National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing-210 095, China

Key Laboratory for Biology and Genetic Improvement of Soybean (General), Ministry of Agriculture, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing-210 095, China

*Corresponding author's e-mail: hestat@njau.edu.cn; tjzhao@njau.edu.cn

Online published on 7 May, 2019.

Abstract

Total 246 lines from southern China were subjected to treatments under natural conditions for 4 years and artificial aging under high temperature (45°C) and high humidity (95% RH) for 5 days. Seed vigor measured by the germination rate (GR), normal seedling rate(NSR), full seedling length (FSL), seedlingshoot length (SSL) and seedling root length (SRL). The significant decrease was observed in the five traits with high heritability and variation. Correlation coefficients among the five traits were highly significant (r>0.700) and significant correlation of these indicators between two treatments was also found with the highest r values of 0.405 for GR. Only seed protein content had weak significant positive correlation with FSL and SSL. According to the grading standard, there were five categories: high tolerance, tolerance, middle tolerance, sensitivity and high sensitivity. 12 lines with good tolerance level were identified, and will be utilized in future breeding programs to improve seed longevity in soybean.

Keywords

Artificial aging, Genetic variation, Natural aging, Seed storability, Soybean