Plant morphophysiological and anatomical factors associated with nitrous oxide flux from wheat (Triticum aestivum)
Experiments were conducted to study the dynamics of nitrous oxide (N 2 O) emission from wheat varieties viz., Sonalika, HUW 468, HUW 234 and DBW 14 grown in alluvial soils of North Bank Plain Agroclimatic Zone of Assam, India. Attempts were made to find out the relationship of N 2 O emission with pl...
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| Published in: | Journal of plant research Vol. 125; no. 4; pp. 507 - 516 |
|---|---|
| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Japan
Springer Japan
01-07-2012
Springer Nature B.V |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Experiments were conducted to study the dynamics of nitrous oxide (N
2
O) emission from wheat varieties viz., Sonalika, HUW 468, HUW 234 and DBW 14 grown in alluvial soils of North Bank Plain Agroclimatic Zone of Assam, India. Attempts were made to find out the relationship of N
2
O emission with plant morphophysiological, anatomical and soil properties. N
2
O fluxes from wheat varieties ranged from 40 μg N
2
O–N m
−2
h
−1
to 295 μg N
2
O–N m
−2
h
−1
. Soil organic carbon and soil temperature have shown significant relationship with N
2
O flux. The rate of leaf transpiration recorded from the wheat varieties at different growth stages exhibited a positive correlation with N
2
O emission suggesting that movement of N
2
O along with the transpirational water flow may be an important mechanism of N
2
O transport and emission through wheat plants. Anatomical investigation by scanning electron microscope revealed that N
2
O emission has relationship with stomatal frequency of leaf and leaf sheaths. Variety HUW 234 with the highest stomatal frequency of leaf and leaf sheath also recorded higher seasonal N
2
O emission compared to other varieties. Seasonal N
2
O emission (E
sif
) of the varieties ranged from 3.25 to 3.81 kg N
2
O–N ha
−1
. Significant variations in E
sif
values were recorded within the varieties. |
|---|---|
| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0918-9440 1618-0860 |
| DOI: | 10.1007/s10265-011-0464-4 |