Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (S1): 90-95. doi: 10.7668/hbnxb.20193128

Special Issue: Saline-alkali stress

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

Effects of Chlorate Treatment on Traits Related to Different Barley Landraces at the Seedling Stage

LI Luli1,2, ZONG Yingjie2, YANG Hua3, XU Hongwei2, GAO Runhong2, LU Ruiju2, LIU Chenghong2, CHEN Zhiwei2   

  1. 1 College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306,China
    2 Biotechnology Research Institute,Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Academy of Agricultural Sciences,Shanghai 201106,China
    3 Shanghai Agrobiological Gene Center,Shanghai 201106,China
  • Received:2022-03-17 Published:2022-12-28

Abstract:

In order to establish a chlorate-based screening system for barley with different nitrogen use efficiency(NUE),the effects of chlorate treatment on barley seedlings were explored,barley germplasms with different responses to chlorate treatment will be used for molecular mechanism research on NUE and crop breeding with high NUE in barley.Eighteen barley landraces from Shanghai region and three main cultivars in present barley production were used as test materials,and hydroponic experiments were carried out in an artificial climate room,and 2 mmol/L KNO3(CK)and 2 mmol/L KClO3 treatments were setrespectively.The traits of seedling height,root length,shoot and root dry masses of barley seedlings were measured after 4 days of treatments,respectively.It was showed that the growth of barley seedlings was obviously inhibited under chlorate treatment,especially the seedling height and dry mass related traits.The ANOVA showed that there were extremely significant differences in all traits under both chlorate treatment and normal condition(the control),and there were also extremely significant interactions between the treatments and varieties.The coefficient of variation analysis showed that the coefficients of variation of root length and dry mass related traits were relatively large in both treatments,while the seedling height was relatively small.Correlation analysis also showed that these indexes were positively correlated under both conditions.The chlorate susceptibility was consistent based on both seedling height and shoot dry mass in general,but there were still some differences.The response of seedling height and shoot dry mass to chlorate could be used as an index for screening barley with different NUE,and B104,B002,B053,B092 and B068 were among the six most sensitive varieties to chlorate based on both seedling height and shoot dry mass,indicating that these five barley cultivars might have higher NUE;while B016,B006 and B008 were among the 6 least sensitive varieties to chlorate,suggesting that the NUE of these three barley varieties might be relatively lower.

Key words: Hordeum vulgare L., Shoot dry mass, Seedling height, Chlorate sensitivity

Cite this article

LI Luli, ZONG Yingjie, YANG Hua, XU Hongwei, GAO Runhong, LU Ruiju, LIU Chenghong, CHEN Zhiwei. Effects of Chlorate Treatment on Traits Related to Different Barley Landraces at the Seedling Stage[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(S1): 90-95. doi: 10.7668/hbnxb.20193128.

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