Perkecambahan Biji Dan Pertumbuhan Kecambah Varietas Sorgum  (Sorghum bicolor L.)  Pada Cekaman Krom Heksavalen

Sri Kasmiyati; Santosa S; Irfan Dwidja Priyambada; Kumala Dewi; Rintawati Sandradewi

doi:10.14710/bioma.17.1.41-54

DOI: https://doi.org/10.14710/bioma.17.1.41-54

Perkecambahan Biji Dan Pertumbuhan Kecambah Varietas Sorgum (Sorghum bicolor L.) Pada Cekaman Krom Heksavalen

Sri Kasmiyati , Santosa S, Irfan Dwidja Priyambada, Kumala Dewi, Rintawati Sandradewi

Published: 17 Jun 2015.

Editor(s): Rully Rahadian

BibTex Citation Data :

@article{Bioma9413,
    author = {Sri Kasmiyati and Santosa S and Irfan Priyambada and Kumala Dewi and Rintawati Sandradewi},
    title = {Perkecambahan Biji Dan Pertumbuhan Kecambah Varietas Sorgum  (Sorghum bicolor L.)  Pada Cekaman Krom Heksavalen},
    journal = {Bioma : Berkala Ilmiah Biologi},
  volume = {17},
    number = {1},
    year = {2015},
    keywords = {},
    abstract = { In contrast to other toxic trace metals, Cr has received little attention. Since valence level of chromium determines its toxicity, chromium is categorized as unique heavy metal. Chromium hexavalent (Cr 6+ ) has the biggest toxicity among other valence levels. Seed germination and seedling growth are sensitive to heavy metal stresses. This research aimed to find out the responses of seed germination and seedling growth of 12 sorghum varieties toward Cr 6+ . Seed germination and seedling growth experiment was done on 12 sorghum varieties (Badik, UPCA-1, Keris, Keris M3, hegari Genjah, Gambela, Selayer, Sangkur, Mandau, Batari, Kawali, dan Numbu), planted in petridishes   with Cr 6+  treatment in form of chromate (K 2 CrO 4 ) and dichromate (K 2 Cr 2 O 7 ) compounds with 0, 50 and 500 mg of Cr/l concentration for a week. The parameters measured were the number of seeds germinate each day; the length of radicle and plumule, and fresh and dry weight at the end of experiment. The results showed that higher concentration of Cr 6+  both in form of dichromate and chromate, significantly decreased  the length of radicle and plumule, fresh and dry weight, and SVI (seedling vigor index) value. However, index germination (GI) value and percentage of germination of the 12 varieties sorgum significantly increased in the treatment of 50 mg Cr/l Cr 6+  in form of dichromate and chromate. The treatment of dichromate compound showed bigger effect than chromate toward variables of seed germination and seedling growth of sorghum. It was noticed that 12 sorghum varieties possessed an integrated complex of adaptation to cope with the range of form of compound and concentration of Cr 6+ . Based on the responses of seed germination and seedling growth, Kawali, Hegari, Keris, Keris M3, Mandau, and Selayer varieties was more susceptible toward Cr 6+  toxicity, and Sangkur, Selayer, Batari, and Numbu was more tolerant than other varieties.             Keywords :    chromate, dichromate, Sorghum bicolor, seedling, hexavalent chromium       },
   issn = {2598-2370},   pages = {41--54}  doi = {10.14710/bioma.17.1.41-54},
    url = {https://ejournal.undip.ac.id/index.php/bioma/article/view/9413}
}

Citation Format:

Abstract

In contrast to other toxic trace metals, Cr has received little attention. Since valence level of chromium determines its toxicity, chromium is categorized as unique heavy metal. Chromium hexavalent (Cr⁶⁺) has the biggest toxicity among other valence levels. Seed germination and seedling growth are sensitive to heavy metal stresses. This research aimed to find out the responses of seed germination and seedling growth of 12 sorghum varieties toward Cr⁶⁺. Seed germination and seedling growth experiment was done on 12 sorghum varieties (Badik, UPCA-1, Keris, Keris M3, hegari Genjah, Gambela, Selayer, Sangkur, Mandau, Batari, Kawali, dan Numbu), planted in petridishes with Cr⁶⁺ treatment in form of chromate (K₂CrO₄) and dichromate (K₂Cr₂O₇) compounds with 0, 50 and 500 mg of Cr/l concentration for a week. The parameters measured were the number of seeds germinate each day; the length of radicle and plumule, and fresh and dry weight at the end of experiment. The results showed that higher concentration of Cr⁶⁺ both in form of dichromate and chromate, significantly decreased the length of radicle and plumule, fresh and dry weight, and SVI (seedling vigor index) value. However, index germination (GI) value and percentage of germination of the 12 varieties sorgum significantly increased in the treatment of 50 mg Cr/l Cr⁶⁺ in form of dichromate and chromate. The treatment of dichromate compound showed bigger effect than chromate toward variables of seed germination and seedling growth of sorghum. It was noticed that 12 sorghum varieties possessed an integrated complex of adaptation to cope with the range of form of compound and concentration of Cr⁶⁺. Based on the responses of seed germination and seedling growth, Kawali, Hegari, Keris, Keris M3, Mandau, and Selayer varieties was more susceptible toward Cr⁶⁺ toxicity, and Sangkur, Selayer, Batari, and Numbu was more tolerant than other varieties.

Keywords : chromate, dichromate, Sorghum bicolor, seedling, hexavalent chromium

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Language : EN

In Vol. 17, No.1, Tahun 2015