Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (S1): 145-153. doi: 10.7668/hbnxb.20194205

Special Issue: Oil crops Saline-alkali stress Cultivation & Physiology

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Identification of Saline-alkali Tolerance and Comprehensive Screening of Varieties in Peanut

MA Xiaolei1,2, HU Pengju1, GUO Song1,2, LIU Cuili1, ZHANG Ranran1, LI Yurong1, TAO Peijun2, WANG Jin1, YANG Yongqing1   

  1. 1 Institute of Cereal and Oil Crops,Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035,China
    2 College of Agronomy,Hebei Agricultural University,Baoding 071001,China
  • Received:2023-04-22 Published:2023-12-28

Abstract:

In order to cultivate and screen saline-alkali tolerant peanut varieties and expand the utilization area of saline-alkali soil,50 peanut varieties were used as materials,and four saline-alkali gradients,including 0,0.4%,0.8% and 1.2%,were set by potting to screen saline-alkali tolerant varieties. The results showed that under the saline-alkali stress of 0.8% in the germination stage,the seeds of 50 varieties were significantly differentiated in terms of saline-alkali tolerance,and the germination rate and seedling vigor of 8 varieties remained above 90% and 85%. The evaluation results of various physiological indexes at the seedling stage showed that the root indexes and aerial traits did not change much under low concentration (0.4%)saline-alkali stress,but showed different degrees of decline under medium (0.8%)and high (1.2%)concentration stress,and the reduction range was 22%—54% and 30%—56%,respectively. In addition,chlorophyll indexes showed an upward trend with the increase of saline-alkali concentration,with an increase range of 12%—13%. The comprehensive evaluation results of peanut using the excellent index showed that 23,5 and 0 varieties performed excellently under the saline-alkali stress of 0.4%,0.8% and 1.2%,respectively. Correlation analysis revealed that,there was no significant correlation between saline-alkali tolerance stress at the germination stage and the seedling stage,indicating that there were different mechanisms of saline-alkali tolerance during germination and seedling stages. The above results concluded that under the conditions of pot cultivation,moderate concentration (0.8%)saline-alkali was suitable for the screening of peanut saline-alkali tolerance varieties. According to the comprehensive excellence index,five saline-alkali tolerant peanut varieties were selected,namely Jihua 572,Tang 3432,Jinonghua 31,Yihua 16 and Yuhua 191,which provided a basis and germplasm resources for the promotion and cultivation of salt alkali tolerant peanut varieties.

Key words: Peanut, Saline-alkali resistant, Germination rate, Seedling vigor, Excellence index

Cite this article

MA Xiaolei, HU Pengju, GUO Song, LIU Cuili, ZHANG Ranran, LI Yurong, TAO Peijun, WANG Jin, YANG Yongqing. Identification of Saline-alkali Tolerance and Comprehensive Screening of Varieties in Peanut[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(S1): 145-153. doi: 10.7668/hbnxb.20194205.

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