ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (5): 159-170. doi: 10.7668/hbnxb.20191070

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

The Characteristics of Selenium Uptake, Accumulation and Transport in Feed Ramie

ZHU Juanjuan1, MA Haijun1, YU Chunming2, CHEN Jikang2, CHEN Ping2, XIONG Heping2   

  1. 1. College of Biological Science and Engineering, North Minzu University, Yinchuan 750021, China;
    2. Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
  • Received:2020-06-15 Published:2020-10-28

Abstract: The aim was to elucidate the response of feed ramie plants to Se. This paper mainly analyzes the effects of selenite (Se(IV)) and selenate (Se(VI)) supplement with different concentration on plant biomass, uptake and distribution of selenium (Se) in feed ramie grown under hydroponics condition (0, 5, 10, 50, 100 μmol/L) and soil cultivation in pot (0, 0.9, 1.5, 2.7 mg/kg) and explores the influence of different selenium application methods on plant biomass, uptake and distribution of selenium (Se) in feed ramie grown under hydroponics condition. The results showed that the Se content of ramie ranged from 21.5 mg/kg to 1 452.1 mg/kg. However, when the Se content in plant organs exceeded 457.8 mg/kg, selenium element was found to inhibit the growth and development of plants and resulted in death of plant. Both of Se (IV) and Se (VI) caused plant toxicity and significantly reduced the biomass of leaves, roots, and aboveground tissues of ramie plants in hydroponics condition when the dosage was 50 and 100 μmol/L and 2.7 mg/kg Se (IV) treatment and all of Se (VI) treatments caused plant toxicity in soil cultivation experiments. The Se concentration was the lowest in ramie leaves and was the highest in root under Se (IV) conditions; However, the Se concentration of ramie leaves were the highest in ramie leaves and was the lowest in stems under Se (VI) conditions. The Se concentration of leaves in Se (VI) treatment was 10-15 times higher than that in Se (IV) treatment while the Se concentration of roots in Se (VI) treatment was only 0.38-0.53 times of that in Se (IV) treatment, moreover, the selenium accumulation in ramie leaves in Se (VI) treatment was significantly higher than that in Se (IV) treatment under the same concentration. Compared with leaf spraying application, root application improved significantly the selenium content of stem, the selenium content and accumulation of root. The selenium accumulation of above ground tissue increased by 15.5% in root application. Therefore, feed ramie is not a Se accumulator species, sodium selenite should be applied with root application for ramie as a forage crop so that improve its forage value.

Key words: Feed ramie, Selenium, Absorption, Transshipment

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Cite this article

ZHU Juanjuan, MA Haijun, YU Chunming, CHEN Jikang, CHEN Ping, XIONG Heping. The Characteristics of Selenium Uptake, Accumulation and Transport in Feed Ramie[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(5): 159-170. doi: 10.7668/hbnxb.20191070.

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