Identification and Evaluation of Seedling Cold Tolerance of Five Spring Soybean Germplasms(PDF)
《大豆科学》[ISSN:1000-9841/CN:23-1227/S]
- Issue:
- 2013年06期
- Page:
- 755-762
- Research Field:
- Publishing date:
Info
- Title:
- Identification and Evaluation of Seedling Cold Tolerance of Five Spring Soybean Germplasms
- Author(s):
- -
- ?（1.Agronomy College of Nanjing Agricultural University/State Key Laboratory of Crop Genetics and Germplasm Enhancement，Nanjing 210095，China;2.Horticultural Research Institute of Shanghai Academy of Agricultural Sciences，Shanghai 201106，China）
- Keywords:
- Soybean; Cold stress; Biophysiological and biochemical index; Evalution
- PACS:
- -
- DOI:
- 10.11861/j.issn.1000-9841.2013.06.0755
- Abstract:
- ?Cold stress adversely affects seed germination and seedling growth of spring soybean in South China.In this study，the biophysiological and biochemical indexes of seedlings of 5 spring soybean germplasms under cold stress were determined，aiming to establish the method for evaluating and screening cold tolerance germplasms.The results indicated that there were siginificant differences in biophysiological and biochemical responses to cold stress among the 5 germplasms.Guliqing was cold tolerant，while Nannong 513 cold sensitive.The cold tolerance germplasms were better in oxidation resistance，photosynthesis and stability of cell membrance than the cold sensitive germplasms.Antioxidase activity，photosynthesis rate and light response curve could be used as the indexes for screening cold tolerant germplasms，while relative conductivity and MDA content as the indexes for determining cold sensitive germplasms.
Last Update: 2014-02-28