title: [Studies on seed quality evaluation technique and grading rules of Cistanche deserticola].
abstract: OBJECTIVE
  To establish a seed quality evaluation technique system and quality grading rules for Cistanche deserticola.
  
  
  METHODS
  We used stereomicroscope, microphotography and image analysis system, tetrazolium method to measure, analyze and evaluate the size, thousand kernel weight, plumpness, embryo rate and viability of Cistanche deserticola seed. Then we used SPSS 11.0 statistical analysis software to analyze the seed viability and related indexes of another 55 batches.
  
  
  RESULTS
  Seed size was significantly correlated with thousand kernel weight, but wasn't correlated with seed viability. However, grain plumpness was negatively correlated with seed viability. Seed quality was not determined by seed size but by seed viability and grain plumpness.
  
  
  CONCLUSIONS
  Seed viability, thousand kernel weight and grain plumpness are significant indicators of seed quality and they can be took in the granding rules of Cistanche deserticola seed.
authors: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing 100193, China.
authors: Rong
authors: R
authors: Xu
authors: Feng
authors: F
authors: Zhou
authors: Jun
authors: J
authors: Chen
authors: Jing
authors: J
authors: Yu
authors: Shi-Lin
authors: SL
authors: Chen
authors: Tong-Ning
authors: TN
authors: Liu
mesh_terms: D031671:Cistanche / Q000737:chemistry* / Q000145:classification* / Q000502:physiology; D018525:Germination; D010946:Plants, Medicinal / Q000737:chemistry* / Q000502:physiology; D011786:Quality Control; D012621:Seasons; D012639:Seeds / Q000033:anatomy & histology / Q000737:chemistry* / Q000145:classification* / Q000502:physiology