Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (24): 128-131.doi: 10.11924/j.issn.1000-6850.casb15050010

Special Issue: 农业气象

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Effect of Different Additives on Germination of Sorghum Seeds Under Drought Stress

He Xiuhong1,2, Luo Xuegang2, Tang Yongjin1, Jia Wenfu1,2, Li Bo1   

  1. (1School of Biology Science and Engineering, Southwest University of Science and Technology, Mianyang Sichuan 621010;2Engineering Research Center of Biomass Materials, Ministry of Education, Mianyang Sichuan 621010)
  • Received:2015-05-04 Revised:2015-05-25 Accepted:2015-06-01 Online:2015-08-26 Published:2015-08-26

Abstract: The study aims to make waste profitable, effectively use the "three industrial wastes" (lignin, recycled low density polyethylene (RLDPE), leather cement) in the governance of growing land desertification, and improve the human living environment. The author took sorghum seeds as materials, and the sand substrates were formed by adding different concentrations of lignin, recycled low density polyethylene (RLDPE), leather cement in aeolian sand. Then the sand substrates were cultivated in the thermostat at 25℃ for more than 7days by adopting the sand culture method. After that, the author studied the germination rate and germination index of sorghum seeds under the conditions of 0%, 2.5%, 5%, 7.5%, 10% lignin, RLDPE, leather cement and 0%, 0.5%, 1%, 2%, 4%, 8% leather cement in aeolian sand, respectively. The results showed that in the aeolian sand, when adding 10% lignin, the germination rate was up to 86.7%. When adding 2.5% RLDPE, the germination rate was as high as 93.3%. However, when adding more than 2.5% leather cement, the germination rate was not as good as that of the control. Therefore, the author reduced the concentration of leather cement, and founded that when adding 0.5% leather cement, the highest germination rate was 75%. Therefore, the influence of the additives on seed germination rate under drought stress was in an order as RLDPE > lignin >leather cement.