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Comparative Study of Leaf and Root Ultrastructure of Different Iron Efficiency Soybean Varieties(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年06期
Page:
927-931
Research Field:
Publishing date:

Info

Title:
Comparative Study of Leaf and Root Ultrastructure of Different Iron Efficiency Soybean Varieties
Author(s):
QIU Qiang1; RAO De-min2; ZHAO Jing1; ZHANG Wei1; MENG Fan-gang1; YU Wei3; YAN Xiao-yan1; ZHANG Ming-hao1
(1.Soybean Research Institute, Jinlin Academy of Agricultural Sciences/ National Engineering Research Center of Soybean, Changchun 136100, China; 2.Shenyang Agricultural University，Shenyang 110866，China; 3.Seed Management Station of Jilin Province, Changchun 130062, China)
Keywords:
Soybean;  Ultrastructure;  Chloroplast;  Sieve tube companion cell complex
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.06.0927
Abstract:
Pot experiment method was used to study the application of chelate iron fertilizer (Fe -EDDHA) on different iron efficiency soybean varieties. Then the ultrastructure of the leaves and roots of the two varieties were compared.The results showed that the iron-sensitive varieties was small, yellow leaf with no chelate iron fertilizer, however the iron-efficient varieties plant was slightly smaller but their leaf color showed little difference. The chlorophyll SPDA value of iron-efficient varieties had no significant difference under two treatments, the chlorophyll SPDA value of iron-sensitive varieties was significant lower than no chelate iron fertilizer and iron-efficient varieties. The number of mitochondria and chloroplast of iron-sensitive soybean had no difference, but the shape of chloroplast was not full and showed a long spindle, the number of starch granules in the chloroplast was small. The shape of starch granules in the chloroplast showed flat shape. The number of mitochondria and chloroplast of iron-efficient soybean showed little difference, however the number of starch granules in the mesophyll cells was not significantly different and that of the shape of starch granules were bigger under the application of chelating iron fertilizer. The root cells of iron-sensitive soybean under no application of chelate iron fertilizer were with irregular shape, badly distorted cell wall, cellular protoplasm were ruptured and unevenly distributed. The nucleus and most organelles were disintegrating，however the structure of the cells under the treatment of iron was intact. The structure of the cells of iron-efficient soybean was not significantly different under two treatment but the cell inclusions were more abundant under the application of chelate iron fertilizer. The results indicated that: Iron had an effect on the plant size, leaf color, and cell ultrastructure of different iron efficiency soybean varieties, the iron-sensitive soybean had been affected more by iron element, however iron-efficient varieties may have better resistance to low iron mechanism so they were less affected by the iron element.

References:

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Last Update: 2018-01-28